Cat c7 runs rough. ECU "thinks" the engine is cold and runs richer.

Cat c7 runs rough net 602-321-8141 K7OU - Amateur Radio Kenwood Radios ARRL, W5YI, & LARC VE SKYWARN CAT C7 INJECTOR TRIM FILES DOWNLOAD - Q&A on REPLACING INJECTORS. United States 20 Posts. It didn't seem to knock as bad when pressing down on the gas pedal but the idle was nasty. 15,928 Satisfied Customers. 2 liter engine in a 2004 Phaeton. Air in fuel system: With air in the fuel system the engine will normally be difficult to start, run rough and release a large amount of white smoke. any ideas? C7 #1 acting strange,complaint loss of power. In warmer weather it's not all that hard to start to really but when it does start it starts with a very rough idle with lots of white exhaust smoke and within a few seconds it smoothes on out, smoke goes away and runs just fine. Cylinder cutout test works fine. 1 Engines Engine Cranks but Does Not Start C7. First thing first this truck takes a beating. Tested oil and fuel pressure from the HEUI pump. 1 I have an 05 GMC C7500 with a CAT C7. It seems to be running fine now. 2 liter from the previous years 7. My proline says aux in out special instructions. Other times it will run as it always has with good power and no smoke. All recommended by CAT. Cat C7 fuel primer pump location is near the secondary fuel filter. Recently it has started sputtering and smoking after cold startup. 6. I can see the accusation pressure jump all around from 1500 - 5000 psi. Here is the problem. 10-15 min. Also when it gets to 4th or 5th gear its very rough and shakes quite a bit. Do not raise the engine With air in the fuel system the engine will normally be difficult to start, run rough and release a large amount of white smoke. When they are connected to it the computer shows all good. Have a CAT C7 in a 2006 Freightliner M2. Started on horrendous bumpy road , was sure it was electric but termination at OP sending unit tight. Use the “Cylinder Cutout Test” on Cat ET to Check the Fuel Injectors. When I attempt to start it, it cranks but doesn't turn over, and there's no "wait to start" indicator showing. GS340. Just starting The C7 was supposed to be the golden child from Caterpillar and a top engine. Sometimes it will findiscriminately shutdown and be difficult to restart. I currently have code 164 CM 0 FMI 2 OC 115 on the dash readout. Result: The engine is not operating in cold mode. will smooth out if you accelerate hard. So you'll be limping. Daniel Wilson. The car is stock aside from the Corsa X-Pipe which I installed last night. No smoke on engine crank. Will not run. Here's what happened: - Left the house for work, drove 10 block to gas station, took about 14 gallons of premium. So, I've replaced two injectors this before. got better and has a little more power but engine light still comes on runs a little rough. It's a 2004 model with a C7 Cat engine and an Allison 2000 transmission. Smooths out as soon as the temp rises above approx. I bought used w/183,000 miles. C. When it’s cold it runs fine. Hello guys, I have a 97 3406E Cat in a Volvo. 2006 freightliner with cat c7 engine WAX42534. Customer drove anyways for a week putting his foot in the pedal hard just to maintain 50 mph. I couldn't get my Cat 330 HP 3126b (the father of the C7) above 25 MPH for 30 odd miles on a hilly highway. They took it for road test everything running fine than it started to push white smoke. Could be a low idle setting issue. 2. Have a 2006 Caterpillar C7 Engine Engine Serial number: SAP04087 COMPLAINT: Engine was running rough and blowing BLACK - Answered by a verified Technician. 1 Engines Engine Misfires, Runs Rough or Is Unstable Caterpillar #161807; Engine Misfires, Runs Rough or Is Unstable ` C7. When it is running and idling it has alot of diesel knock. When it is running, it runs fine and it will run all day until shut off. Any thoughts?Thats the 1st engine. From: altered state. Here are the recommended service intervals for various engine components: Oil Change: The engine oil should be changed every 12,000 to 15,000 miles or every 250 to 300 hours of operation, whichever comes first. I will find out up around the continental divide it the turbo is doing its job. Thread starter Abbott187; Start opened the valve cover and saw 3 wires cut for the injectors so i replaced the injector harness and it actually started running better than before. I have a pressure guage in the oil rail and it shows 1000psi cranking A shot in the dark here. I need the torque specs for a C7 Cat. Run engine at rpm that gives maximum misfiring or rough running. This happens because the engine has skipped a process in the . I know that this was the first year that they changed over to the c7 7. 2005 GMC C7500 Topkick C7. Always needs ether. During the past 11 months I've been driving almost 15 K miles with my RV that has a CAT C7 350 engine. Run the engine at the speed that gives rough running. 29. Posted - 09/13/2010 : 10:33:02 AM smoothes out and runs fine. Oil change, run. Proceed to Test Step 5. It acts as though it has a heavy load on it but it doesn't. Rush truck center in Tampa sucks. 5 ltr. Mechanic's Assistant: Anything else you want the equipment mechanic to know before I connect you? Hurry Table 3; Troubleshooting Test Steps Values Results ; 4. Coaldust Senior Member. Find the cylinder where loosening the fuel line nut does not change the way the engine runs. diaged two bad injectors and low fuel pressure. It is mostly used a medium duity truck and equipment the C7 ACERT is used in graders, loaders and smaller equipmet and it big brother the C9 is used in the larger ones. I am ASE Master Certified. freightliner replaced ecu and sensors recently and i already changed fuel pump and fuel lines and filters and the very same sensors freightliner changed and changed injector seals oil and oil filter and so far it is sthe the same. 22,570 Satisfied Customers. Answered by Cat Man in 48 mins 5 years ago. By chatting and providing personal info, you understand and agree C7 cat won't start after sitting for two 2 or more days. Although I don?t believe that the X-Pipe install has anything to do with my issue, I do want I have a CAT C7 that is running rough on startup in the cold. When you go to start it it cranks a long time about 10-15 seconds then starts like its cold. Water in fuel system: Customer: CAT C7 WAX09139 C01-00103-728 Mechanic's Assistant: Anything else you want the equipment mechanic to know before I connect you? ENGINE WILL RUN ROUGH THE FIRST 15-30 SECONDS UNTIL AIR CLEARS FROM THE FUEL. truck has 70k miles and doesnt get driven often. How it works. Had to search around a few places for a replacement (cat service didn't have one P. Similarly, the Cat c7 engine rebuild cost will also differ from getting a used C7 engine. Regular oil changes help remove contaminants and ensure CAT is able to communicate with the EMC. Cat c7 serial #71176 wont run will start with ipr unplugged and a shot of either dies out when i plug in the ipr new. Transfer pump, HIUI, and injectors are all new. If the truck runs rough when it’s cold but clears up when the engine is warm, you have a stiction iss Customer: Cat c-7 runs rough at almost exactly 150 degrees on the temp guage. 7-10 seconds accellerating. Typically 10-15 mi hauls into the elevator on state roads and a short stretch of highway. 1 Engines Engine Misfires, Runs Rough or Is Unstable Caterpillar online information Parts Catalogs; Service Manuals; Diagnostics; Find. it will spit blue smoke out and hesitate but will clear up and the check engine light will come on until I depress the pedal. 9. Repair: Troubleshoot the code. Logger72 Active Member. 1 Engines Engine Overspeeds 2014/12/11 New Clamps Now Used in the Air Conditioning Group on the 950 GC Medium Wheel Loader {1380, 7320} Table 1; Troubleshooting Test Steps: Values: Results: 1. Had it overheat on our first long trip while my wife was driving. CAT C7 engine. new air My C7 looses prime after 2 days and will only start with either, After one day it starts but runs rough for a minute or. Hi everyone, my 2006 discovery with a cat c7 330HP is taking a while to start in the cold weather of new jersey 23 degrees this morning, so i turned the key and waited for the light to go out and I did it again right after because it is so cold here, after i star cranking it takes about six or eight seconds of cranking before the engine actually starts and when it starts the The first time, I pulled over and let the engine run and the temperature dropped very quickly - within one minute. I have had. Probable Cause(s): 9. in 5 mins 1 month ago. Active injector codes 1-6 injection current fail. I am ASE Master Truck Certified. Hey guys my cat c7 is not starting I’ve literally opened every single cable and nothing check the heui pump switched it out three times I’m so lost Crank no start if I use either it starts but runs rough and has no acceleration just a tiny but then it bogs Cat c7 serial #71176 wont run will start with ipr unplugged and a shot of either dies out when i plug in the ipr new By chatting and providing personal info Unplug iacp and engine runs rough plug it in and engine does not start. Didn't wanna pay for it. I have a check engine light on,and it's running rough. Didn't have time. Its been over there 2 times for the same problem witch I have a CAT C7 KAL in a 2004 Ford f650. Was running on all 6 prior to long term storage. my truck has cat c7 acert motor,truck runs excellent but engine. Truck wont start unless you spray a little bit of starting fluid. It has an intermittant codewhich flashes at idle but. It had been behaving oddly for many miles before that. I don't know for sure that it reads good fuel pressure but the fuel system is all new. The Heiu pump and injectors checked out good except for #2. It is used to spread lime and fertilizer in fields and I have rode with the guy in it and he has it in second gear running wide open all day long. I have a 2007 cat c7 blowing heavy smoke found air filter to be plugged up,change filter and still doing the same thing, only runs rough and blows white smoke when it is at operating temp. Install new parts where needed. Starting hard even when it s plugged in all of a sudden. Install a suitable blank on the fuel inlet port on the primary fuel filter head. I already wired in a 205 degree temp switch for the fan clutch so I'm not worried about the ECU controlling clutch operation. Customer. Hey all, first time post. It will start fine but runs a little rough. Just need a small PC to run it. I replaced the speed sensors didnt fix the problem . If air is in the system, it will generally get in on the suction side of the fuel transfer pump. The truck starts hard after long cranking and runs very rough in the cold. A. I checked the exhaust manifold with a temp gun and determined 2 of the 6 cylinders were firing. 22,594 satisfied customers. The engine was "Rebuilt before I got the truck. This engine was made to meet the Tier 4 emissions I have a 09 cat c7 that seems to develop a miss under a load or when at highway speed in 5 and 6 gear. Members enjoy round-the-clock access to 12,000+ verified Experts, including doctors, lawyers, tech support, mechanics, vets, home repair pros, more. 2004 Kenworth T-300 truck By chatting and providing personal info, you CAT C7 TRUCK ENGINE RUNS ROUGH AT IDLE ONY HAS ERRATIC IAP, Cat Man. Cat c7 motothome uses a gallon of oil per 400 miles. 15,928 Customer: CAT C7 ACERT, injection actuation pressure fault. It wouldnt come off so i just attatched the fuel pressure sensor right onto the head Now the truck misfires runs very rough little power and white smoke coming out exhaust that C7. EFLP Flow Test at the Primary Fuel Filter Inlet A. Next, check the rocker arms for loose lifters. 10. Only code I saw 2006 peterbilt with a cat c13 , the truck will start and idle fine for around 10 seconds then it starts to miss a little for another 10 seconds and then it starts to miss and run really rough . Turbo above 10psi , OP running 45psi ,OP drops off the bottom. The reason is because 6 is the last injector to get fuel. It is shutting off. Ford f650 with cat c7 acert crank no start. Oil level holding steady at 7/8 over last 800 miles. Don t have diagnostics/software. Ask for help, 24/7. I figured this should have been plenty of time to bleed out any air, but it just kept bubbling. This morning the engine seemed to have a bad knock and ran kind of rough at the first start up. 2th. Has been running like this for about a week. gone bad , it may be your start problem as the Huie ? needs to build oil pressure to build fuel pressure, could be the rough run was part of it to. I am in Evergreen Colorado now and will head west on I 70 very shortly. Tomorrow going to change the fuel filter and water separator filter as a starting point. We had an injector replaced last year but are to convinced it was the problem. 5 Customer: hello I have a gmc c7500 with a cat c7 engine. Thanks Given: 60 Thanks Received: 25 (13 Posts) Posts: 71 Threads: 21 Joined: Nov 2015 1 06-13-2018, 07:36 PM . Joined Jun 20, 2018 Messages 27 it fires but only on a couple of cylinders, when it finally starts it blows blue smoke, after that it runs fine. I hav e 2006 ford f-650 with cat c7. The troubleshooting indicates that the unit injector hydraulic pump is working properly. I'm running out of things to check help!!!!! aaronwilmoth80911 Top Member. Check for Codes. Team Owner . Well it done. idle pressure is at 67 psi. They have flashed it several times. This article applies to the C5, C6 and C7 Corvette (1997-current). I have a 2005 Fleetwood Excursion on a Freightliner XC chassis with a 350 hp Cat C7. 22,530 Satisfied Customers. go-west. ECU is using a default value for the ICP at idle at that point. C5 General - Engine running rough, horrible exhaust smell - Help! First mechanical problem I've had with my Z in 6 years and 40k miles of ownership. with the injectors so i replaced all of them i havent trimed them ( i have catet but it dont communicat with the truck ) For example, while a rebuilt CAT C7 engine price is around $22,000, a rebuilt 3208N may be around $36,000. When it is warmed up it has a hard stumble at idle and some while By chatting and providing 2004 ford f150: 000 MILES. I hade codes pulled and got a 0164-11 with no check engine light . Answered by Nich M. It bubbled for atleast 5 minutes while the truck was idling. D. Technican with 20 years experience focused on engines and electrical. 2nd C7 rebuilt 3 All C7's run rough because they are Corvettes with serious camshafts and other factory, stock ****, don't? Reply. 04 ford F650 xlt supercab 4dr cat C7 allison century 21 ft carrier alcoa's ECU "thinks" the engine is cold and runs richer. Got a new ECM and it runs great. Specialities include: Heavy Equipment, Medium and Heavy Trucks My 2004 F-650 Rollback CAT C7 with 190,000 miles has been acting up. That's because a misfiring engine can be caused by many mechanical problems. Author Topic: Freightliner 2005 M2 / ACERT CAT C7 (Read 33387 times) 0 Members and 1 Guest are viewing this topic. I did this couple years ago and I did that for a different reason altogether. 1 Engines Engine Misfires, Runs Rough or Is Unstable C7. original issue was rough running truck and would die. It has been running great until a couple of months ago. The SN is WAX69825The active diagnostic codes are 108-3 111-2 105-3 164-3 70-5 102-2 91-8 110-3. cranking fuel pressure is at 15 psi. I replaced the heui pump with an aftermarket rebuilt pump and made it about 70 miles and threw code again back into limp mode 45 mph max. 2 liter cat engines. I have been experiencing a slight fueling problem lately I think. Result: A diagnostic code is not present. Maybe we have resident CAT mechanic or someone else who had a similar issue with a 2005 Cat C7. I had it to Cat on Friday, they updated the computer and found the air inlet temp sensor was faulty and causing the engine to de-rate - making it feel like it was missing. 2021. St. I have 2007 ford with a 3176, cranks, but wont start. Told him we need to do more diagnostic. Husband pulled out the filter the next morning, run perfect. Does this happen after 8 - 10 hours of not running or every time you start it? If it does it after sitting a few hours it most likely has a small leak where air is getting into fuel system. then i googled the Fault and found out that the C7 has a lot of probl. Refer to Problem 34: Air In Fuel. Foot off accelerator OP is normal 45psi. I think it is because of the recent temp change because it does not do it when the engine is warm, or when the Engine is Cat C7 in 2006 F650, Vin: 3frnw66x56v235167, 67000 milesEngine starts up and runs for a few minutes then gradually runs rougher and stalls as though it is running out of fuel or pulling air. Return the engine to service. ONCE ENGINE IS RUNNING, NO SIGNS OF AIR IN THE RETURN FUEL OR ANY PERFORMANCE ISSUES. I drove it about 40 miles two weeks ago and it ran fine, accelerated good and ran 55-60 on the highway no problem. Cat Man 3126 C7, runs ok in lower rpms once i hit high gear and rpms at or over 2000, the truck stumbles, doesnt have. Once the truck has been running for about 15 minutes it idles fine, once I get to about 1000 rpm it starts surging. Apr 20, 2020 | 09:48 AM Share #10 cv67. Died while C7 cat acert runs erratic when not in cold mode. It's a 5EK engine. injector solenoid test, fuel delivery tests,runs fine, By chatting and providing personal Have a spn 656 cm 0 fault code. 2004 intl 9200 cat accert c13 misses runs rough 1000 -1500rpm no codes 75 psi fuel at idle, 90-95 on road on outlet side. 6,830 Satisfied Customers. with CAT ET my reading are as follows, ( at idle: actual 800-900psi, Have a 05 Freightliner Cat c7 Engine. ther Have a spn 656 cm 0 fault code. - Within 2 Customer: I have a cat c-9 that runs smooth at idle, misses badly between 850 RPM and 1200RPM and runs smooth once the turbo starts to spool up. C7 Z06 Discussion - Extremely Rough Idle and Stalling - Hi All, 2015 C7 Z06 A8 w/ 22,000 KM?s (13,700 Miles). To find a cylinder that has low compression or does not have a good fuel ignition, loosen a fuel line nut at a fuel injection pump. Rough idle and excessive whitish to more so brite blue smoke. Has 12K front axle and 23K rear. It runs good and drives good but one thing kinda bugging me - The temp runs 150-175 degrees ( I got it to 175 on the warmest day so far, about 80, uphill full load with the ac on ), usually 150-160 in the mild cooler weather I owa has been having the last couple weeks. Other times it will run as it always has wit read more Customer: good morning, im working on a Cat C7 engine and im having a rough idle issue. I had a cat tech hook up the ET and he said the ohms and accusation pressures were all over the place between 850 & 1200 and that the HEUI pump and all 6 injectors would need to be replaced. jcross Seasoned Expediter. My old fleet of C7’s did like to munch cam followers and CAT C7 TRUCK ENGINE RUNS ROUGH AT IDLE ONY HAS ERRATIC IAP, Cat Man. Wrong Fuel C7. Gotcha. I have a c7 cat acert engine, rough running issues and smoking some, low power, inspecting injectors found that all the. Tracking down the issue of why your C5, C6 or C7 engine is misfiring is not easy. I have an 05 GMC C7500 with a C7 C7 runs rough after tuner install. Cat runs a pressure valve in the fuel return line , from the back of the head to the tank, to help build pressure for the injectors in the head. Answered by Cat Man in 2 mins 9 years ago. wait to start lite will not lite up, have checked all fuses. Question, has the problem just started or on-going? Either way, I would recommend taking it to a CAT certified service center to hook up to the ECM. Not sure if they are up to the task of running at full farm GVW. Turning motor off and restarting the engine clears it up and runs good again. This is normal operation. CAT C7 TRUCK ENGINE RUNS ROUGH AT IDLE ONY HAS ERRATIC IAP, Cat Man. 538 Posts. Ihave a c7 cat C7SO3280 it wont start after it sets a few. On a c7 cat with 350 hp how much more hp can you ad to it and how. The cooling fan may not fire up until the temperature has reached 245 degrees Fahrenheit. ENGINE RUNNING ROUGH AFTER REFUELING. i replaced the injectors because i Customer: Hi, I have a problem with our Cat C7 Acert . 2 brand new batterys. I I have a c7 cat motor with a heui pump I have zero fuel pressure on the gauge I replaced the hand primer pump and I hear the truck runs, just a slight skip or misfire type feeling. Evidentally this got posted in the Cummins forum so if you've already read I appologize. i replaced the injectors because i had two cold Customer: Cat c-7 runs rough at almost exactly 150 degrees on the temp guage. I have a CAT C7 KAL in a 2004 Ford f650. If the engine runs rough, continue to operate the engine at low idle. PCI 154 flu 14. worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling. Car ran fine the way to the gas station. 2012. Never does it I have a new to me C7 Cat in a Pete 335 box truck. Aug 7, 2011 It will run great one day then do this the next. Most Ford dealers don't know much about that type engine. Truck died and was towed to us. By chatting and providing personal info, you understand and Have a spn 656 cm 0 fault code. New Topic Reply to Topic Printer Friendly: Author: Topic : wocobus Active Member. Use Cat ET to verify that the 2007 c7 cat surging probelm New Topic Reply to Topic Printer Friendly: accuation pressure good, atmostphric pressure sensor within spec. He didn't want me to address the hard start issue. Make sure the keyswitch is in the OFF position. There are no codes ,did all the 2006 Peterbilt reman C7 Cat. 22,442 Satisfied Customers. kal61102. What is happening is while driving the bus it will intermittently experience a miss/low power type situation. Codes: Result: A diagnostic code is present. Cat c7 rarest problem not starting . Feels like. Customer: Hi, I'm trying to narrow down a cat c7 running rough/missing problem. Regular maintenance is essential to keep the Cat C7 engine running smoothly. Not sure where the lopey cam claims come The CAT C7 is designed to run at a hotter temperature in order to burn off more of the diesel particulate matter that is produced. Taking off is the most noticeable power loss. plugged back in ,unplugged iap engine started runs rough. During operation, when the vehicle comes to a complete stop it has a hard time for approx. no smoke or leakes 70000 miles. Record the following data: · Engine symptoms (misfire, excessive smoke, low power, runs rough) I have a cat c7 7. Need help. Posted - 11/16/2015 : 6:52:17 PM If you have Cat install the kit they give you a free three year warranty on parts Customer: I have an 05 GMC C7500 with a CAT C7. It has the 330hp C7. Why do you have to take it to Freightliner when it is a C7 Cat motor 2 stroker _____ 2006 Country Coach Inspire 360 40ft Genoa Designer Series, Samsung 197 RR Cat C9--STEEL & COPPER Bolt Together Radiator w/ updated rubber mounting SilverLeaf 330 Magnum 2812 PSW 2011 Ford Edge Sport-Air Force One I have a c7 cat acert engine, rough running issues and smoking some, low power, inspecting injectors found that all the. Customer: I'm dealing with a C7 Cat Acert engine that's running roughly, emitting smoke, and showing low power. This article has highlighted Customer: I have a 2006 C7 ACERT Cat engine that runs rough at idle but great when at 1850-2000 rpms. Customer: Hi we are having issues with a cat c7 running rough, stumbling and low power when it warms up. Got towed in no start. My question is how long did cat use the c7 engine like mine. I Have a 2004 T300 with a C7 cat. This will stop the flow of fuel to that cylinder. I Engine smoking & running rough after running gererator: milehitruck: Caterpillar Engine Forum: 4: 10-09-2015 05:54 PM: 5th wheel rough ride,on rough roads ? dkasten: Trailer Towing and Tow Vehicles Discussion: 7: 07-13-2011 06:50 AM: Rough Running ONAN Generator When Cold: Jackm: RV Systems & Appliances: 15: 12-05-2009 07:05 AM: Running Rough I have a 1992 sundance with a 2. Well, it's not a C7 to clear that up. Getting active injector current faults on all 6 injectors while running. develops intermittent miss under load and no load conditions. Power at the block heater as well. We have had this happen a few times with some of trucks with Cat Motors. Like a bad injector. Hi folks, first post here on the sight, but after searching the internet I'm hoping you Cat folks can steer me in the right direction. Cold start idle is 50+psi. Cat C7 rough idle. Full 2004 cat c7 KAL75632. Cat C7 cranks no start, cat C7 transmisión fuse location, cat C7 ecu fuse location, cat C7 ecm fuse 2 codes, 652-7, 656-7,using cat et, engine passes all tests. If you have to call a tech and ask for help call Cat or a class 8 truck shop not a Ford PU dealer. Eventually the smoke will fade out but will still idle rough. Back in 2000 and early 01 they did have a idle instability issue with F-series (3126). With the throttle pedal fully floored, the engine runs rough, shoots out large amounts of white smoke from the exhaust (literally makes a persons eyes water within 10 feet), and just "crawls" I'm dealing with a C7 Cat Acert engine that's running roughly, emitting smoke, and showing low power. Disconnect the fuel inlet connection from the primary fuel filter head. We couldn't get it to do it in the shop, but there was a code for loss of primary and secondary engine speed sensors. change fuel pressure sensor and pressure relief valve. Hi all. The engine number is KAL59362. 5. Thread starter Logger72; Start date Jul 20, 2022; L. Can you describe any specific symptoms or noises that occur when the engine is running rough? Customer: Oil pressure sits on 85 psi Customer: After a regular service the engine runs rough during idle, and acceleration. As such, it is not acceptable whatsoever to publish any software that is bound by any legal restriction. Must have smoething wrong these idle smooth. 2k rpm it is at 80 psi. Cat Man. I am getting a code 39 - High injection actuation pressure, the truck runs, just a Posted 11/19/2013 17:33 (#3455050 - in reply to #3454287) Subject: Re: C7 cat starting hard Between Omaha and Des Moines, 7 miles South of I80 If your C9 is a HEUI engine, then that same style of fuel return check valve is used. There was an elbow looking thing in the back of the cilinder head and some sort of a fuel pressure sensor attached to it. Customer: Hi, I have a problem with our Cat C7 Acert . engine light comes on after driving, it trips 157-15 and 157-17 fuel codes and low engine coolant code all the time. Cat C7, with 164-11 injection actuation pressure fault coolant temp sensor reading 20 degrees hotter changed temp. It came into the shop for a complaint that it would almost stall out and tonnes of black smoke would come out the exhaust. I spoke with our Fleetwood service manager here in Sacramento, a really good and honest fellow, and he said Have a spn 656 cm 0 fault code. Test the fuel injection nozzle for that cylinder. It’s quite common for the engine to struggle and overheat whilst going uphill. Likes: 3,050. Kinda “puffs” at high By chatting and providing personal info, you Hi, I have a 2005 F750 cith a CAT C7. Connect Cat® Electronic Technician (ET) to the service tool connector. Fuel pressure is 65psi at secondary fuel filter, filters are new. Dealer changed injectors,high pressure pump,pistons and rings,crank,cam,boost sensors. The truck has about 580,000. So, the truck will not start without ether, and when it does start it runs rough. CAT 3126 rough idles then dies. Place the open end of the fuel inlet line in a suitable calibrated container. Fuel pressure is 80psi, icp pressure fluctuates but not crazy still always above 2000. so we replaced the number 5 injector, then it was fine for a few hours then started to run bad again so we did the test again and showed number 1 and 2 weak so we 15. SER KAL27216 ARR#241-1348. Cold mode: Result: The engine is operating in cold mode. Thread starter jcross; Start date Aug 7, 2011; J. I have a CAT C7 WAX22042. And what the f**k control mode not ident. the code is pid 084 fmi 04. Engine Runs Rough. Would like to get to Cat Man. Working on a Kenworth T-300 with Cat C7 (WAX28038) truck runs great until temp gauge reads about 140 deg. Incorrect Parameters. When it's warm, 180+ it sometimes smokes gray and the engine runs rough at full load. Nich M. I HAVE A CAT C7 IN A 2008 F650 THAT KEEPS THROW CODE 3719-0 JUST HAD DPF CLEANED. 160 degrees. However, its production run lasted only 6 years between the years 2003 and 2009. Since then, we have learned to use the gears and proper RPM to keep the temperature in check. Kal61102 c7. First is was running rough and i believe misfireing their where no active codes logged . Help me with this code on a CAT engine C7 ESN Kal 87680 IAP code 164-11 Truck would run rough at high speeds. 2006 Peterbilt reman C7 Cat. Code on my cat program is 1-11. It slowly dropped down to 25 MPH and then sort of stayed there. Have a spn 656 cm 0 fault code. 22,594 Satisfied Customers. Joined: Oct 2004. I bet your truck runs hotter and the fan kicks on more because you don't have the idle turn up. She runs pretty smooth, I am getting 9 mpg +/- . S. By chatting and providing personal info I have an 05 GMC C7500 with a CAT C7. Customer: I have a c7 cat that runs from 2 seconds to two minutes and shuts down. Usually causing long crank times, smoke for awhile after starting, sometimes will Came across an '04 Peterbuilt 330 w/ a Cat C7 (330HP) and Alison Auto. changed the transfer pump and fuel pressure regulator and it brought the pressure up at 75 psi but the truck is still doing the same thing. The valve on my Cat is in a right angle brass The smoke you see is from the oil getting up to the head and burning which causes white smoke. My Cat is not in a motorhome, but an "05" M2 Freightliner that avgs 2600 miles/week. No problems all day long. But the scanner says no faults. Car Specialist. Find the air leak in the fuel system and correct it. I am having an issue with it running rough when pressing the throttle pedal. this morning while on my way to work it began to run extremely rough, (missing, maddogtech. Could you please tell me the brand, model, and year of your vehicle? Customer: 2006 freightliner m2 Mechanic's Assistant: Got it. ECU uses feedback from the ICP sensor to smooth out idle among other things. The second time I coming to the top and it dropped as soon as the road leveled out. fuel pressure was at 65 psi . I have an 03' F-650 w/ 3126B Cat engine. The best way to counter this whilst driving is to downshift to around 1100 RPM. When it’s warm, 180+ it smokes and the engine runs rough at full load. when you drive it, it will go in a derate mode and it will not get above 1500 rpm of 15ish mph. It blows ALOT of oil out the breather tube when running down the road. Got a cat c7 that starts up and idles with no trouble. Mechanic's Assistant chat. Never has the check engine light came on. I'm working on a 2007 f650 with a cat c7 engine. 1 Engines [UENR0668] C7. I am ASE Master Truck CAT C7 No communication New Topic Reply to Topic Printer Friendly: Author: Topic : aaronwilmoth80911 Top Member. NO CODES and HEUI pressures OK using JPRO software to read ECM. Cat c7 engine starts and runs fine. Did the rough idle and acceleration issues start immediately after I have been working on a Cat C7 with a power loss. Expert. If you unplug while the truck is running, you should notice the idle get rough and SES trip. Number two and number five. Just starting to investigate the problem. With the throttle pedal fully floored, the engine runs rough I have a new-to-me 2007 Winnebago Journey 34H (2006 Freightliner Chassis and CAT C7 Engine). engine. Found the fuse from the Cat C7 fuel primer pump location is near the secondary fuel filter. When the engine is in "cold mode" it will: alter the fuel timing, Limit the injection actuation pressure on HEUI, lower the fuel limit for the injectors,change the injection pattern, and a few other parameters are altered to allow the engine to warm up to prevent damage and improve I have a 2006 frieghtliner m2 with a cat c7 engine it is blowing smoke when running could you tell me where I should C7 ACERT engine in Frieghtliner M2 135000 miles 2500 hours Rough running at start, smooths out after warm up. Rough idle and excessive. Install i have a 2004 freightliner with a cat c7 on it, experiencing strange loss of acceleration after it warms past 150 degrees. and at full throttle it is at 87psi. Replaced wiring harness on engine and injectors. On the initial test drive after installing the tuner, there was a noticable surge/misfire at higher rpm's. The white smoke when your in third gear sound like the High Pressure Fuel Sensor. Final Words. Freightliner XC Cat C7 300HP 2014 I have a cat c7 engine with a 164-11 code. It has had low power since I Have a spn 656 cm 0 fault code. Customer: I have a 2009 freightliner with a cat c7 i just replaced the cylinder head. Have a c7 cat with fault codes 164 and 42. customer states that once he shuts down engine for 30 seconds, and re-fires runs great for approx. Engine starts, runs really rough. MickZ0815. Upon inspecting the injectors, it was discovered that they have all been replaced Customer: Cat C7 running rough Mechanic's Assistant: Thank you for sharing that. Upon inspecting the injectors, it was discovered that they have all been replaced The truck is a 2003 Sterling with a C7 cat engine. Misfiring cylinders: Refer to Problem 4: Engine Misfiring Or Running Rough. 15,928 engine # WAX00274, In a 2006 GMC C7500. Customer: I have a CAT C7 KAL in a 2004 Ford f650. Psi 151 fmi 11. Engine runs rough after warming. Posted - 04/21/2015 : 08:07:22 AM . engine runs A condition of running rough can be one of many factors. Then loosen a fuel line nut on the injection line for each cylinder, one at a time. Our 2005 C7 CAT overheating too. Hot Idle OP 25psi. The smoke will then return for awhile. My wife an I have a Thomas School bus w a Cat C7 2005, an Allison 3100 I think. It has been climbing hills really well, accelerating well. Wayne. 2009 blue bird c7. Completely replaced all fluids and filters. After it idled for a few minutes, it cleared up and ran fine. Redman550 Location Offline Junior Member Reputation: 1. Still had no communication though. It's a 1992 7LG 3176 All this is leading me to think that the ECM is shot. If it means anything, the preheat light doesn't come on. Customer: I have a Cat C7 S/N KAL56715. Newbie; Posts: 24; She seems to run ok once you get past the initial pressing of the pedal. I've been very happy with its performance. i have replaced injection pressure sensor, both fuel filters, and two injectors. All installed by CAT. I know that some of the later cat engines in motorhomes advertised 350 hp rather than the 330 mine claims. c7 runs rough. Even when the engine is in neutral when you step all the way down it smokes white and runs rough. Maybe something sticks and resets when restarting. Only runs rough once engine gets warm. I The contents of this forum are for experimental & educational purposes only. Still missing and smoking. I tried turning the knob up, and I could tell the power increased, but the surge was still there. we did a injector cut off test and injector 5 was weak and engine was not missing when cut off that injector. Can only get the RPMs to 1500, and only 35 mph max on way home. Does a cat c7 engine derate by cutting 2 cylinders? Cat Man. with the injectors so i replaced all of them i havent trimed them ( i have catet but it dont communicat with the truck ) C7 Cat starts hard. 1YO OP sending unit . I already changed the huei pump with a known good used one. When it's cold it runs fine. 23 Years Caterpillar 2005 cat c7 acert. Cat C7 350, 4 Slides Blue Ox, Brake Buddy 2004 CR-V Toad jrparr@att. I cannot find a fitting that will fit into the port by the secondary So after playing with this pos its runs perfectly fine while in cold mode once eng hits 150 degrees and cold mode off runs like garbage smokes,bucks, blah blah would the be bad injectors? Thanks given by: I have a 1998 Beaver Contessa with a CAT C7 3126 330 that appears to have a strong charge and but won't start. 0. Joined May 9, 2011 Messages An engine that runs rough can have a leak at the valves, or valves that need adjustment. after changing out injectors (all 6) and replacing the pressure regulator on back of head (70-75 psi at all times), still have a low injection pressure code. I have a 2009 dodge ram 1500 5. Engine is Cat C7 in 2006 F650, Vin: 3frnw66x56v235167, 67000 milesEngine starts up and runs for a few minutes then gradually runs rougher and stalls as though it is running out of fuel or pulling air. As I slow down to a stop sign (basically take my foot off the pedal and let it coast/slow down), when I goe to take off again the engine will be running rough/missing and will run this way for awhile and then Table 3; Troubleshooting Test Steps Values Results ; 4. 23 I'm trying to narrow down a cat c7 running rough/missing problem. I tried chaning the fuel filter and that didnt help. Logged antiqueclockservice. acts like air in fuel. Christopher D. 04 dutchstar c7 cat. Proceed to Test Step 2. We were parked under a tree all night, but on start up, I had no throttle. If idle is rough and stays rough when you unplug, this could be bad ICP or ICP wiring harness, or many other things. I have a cat 312B- runs a little rough at high rpm- drained fuel tank, new filters & injectirs. . I have a C7 ACERT in an M2 Freightliner and she runs pretty sweet. The engine can jerk or run rough as a result. Technician: Cat Bus 3022007 Thomas C2Caterpillar C7 with no exhaust manifolds or turbo Runs surprisingly great missing half the motor Owned by @jrin12 (04-04-2023, 08:46 AM) L5pduramax Wrote: I have a 2008 f650 with a c7 cat it has a misfire on cylinder 4 and 5 and white fuel smoke put two new injectors in and that helped alittle but still running bad any ideas what else to check If possible swap injectors to other holes see if the misfire changes positions, if it stays the same pull the head and check head and liners Customer: I have a 2005 Cat C7 that has all injectors changed(100k miles) and injector # XXXXX changed for the 4th time. Posts: 81,242. The engine starts to run rough and a severe lack of power, as in it will not even pull itself on flat land. 23 Years Caterpillar Engine experience. Ambient temperature was over 100 degrees F, and climbing a steep grade. So, I replaced the rough running issue. Just starting to investigate no, it does not. Hence, our long start. I have changed the injector seals and had some improvement in power but it still runs poorly. Doesn't matter whether it was running and shut off for only a half second. Don't. CAT ET will not hook up to it. I took the car for a drive with my son. When cold it runs rough and smokes, smooths out when warm. Observe the reading for coolant temperature on the Cat ET. Cat Man 3126 C7, runs ok in lower rpms once i hit high gear and rpms at or over 2000, the truck stumbles, doesnt have Customer: good morning, im working on a Cat C7 engine and im having a rough idle issue. Mechanic's Assistant: Are you fixing this yourself? What have you tried so far? Yes got towed in no start condition ,unplugged iacp engine runs, but rough. I have a CAT C7 that died on the road yesterday. Sometimes after letting off accelerator and coasting the engine runs rough and loses power. Cat C7 Mechanic's Assistant: I'm sorry to hear that you're experiencing issues with your engine after a regular service, but our Equipment Mechanic will be able to help diagnose and resolve the problem with your Cat C7. Turning motor. A clogged fuel filter will cause a Cat engine to throttle back so it's hard to get up speed. It tied back to low Idle setting Monitor the status screen on Cat ET in order to verify that the engine has exited cold mode. Turning 2500 rpms non stop and the engine stays at 200+ coolant temps. 2004 cat c7 KAL75632. Shut truck off restarted truck running smooth than started pushing black smoke. Have limited technology for cat but. It has an intermittant code(###) ###-####which flashes at idle but not while revved or driving. Re: Loss of Power on CAT C7 Acert - Solved « Reply #2 on: July 05, 2013, 04:31:52 PM » Ok, Doug at I-Truck Service Center was spot on in diagnosing the HEUI as the source of the problem even though his center didn't have HEUI gauge equipment to complete a thorough diagnostic procedure. Any ideas what may be causing this? Thanks . c7 157-15 and 157-17 codes I have a 2008 gmc c6500 with a c7 cat engine. We use cookies to give you the best possible experience on our website. Found Low Fuel pressure. Jude Donor '05. The technician working on it isolated that cylinder and it ran the same and no smoke, activated # XXXXX and it smokes, He suggested the ecm? we swapped an ecm from another vehicle and I have a 2006 Blue Bird with a CAT C7 ACERT engine in it and it has 180,000 miles on it. After one day it starts but runs rough for a minute or. 2004 ford f150: 000 MILES. Runs fine once it s started. When it’s warm, 180+ it sometimes smokes gray and the engine runs rough at full load. truck will. After it gets warm it starts to sputter on take off. 7 that has a misfire at about 2k rpms, Driving, 170000, a small evap leak. Customer: Cat C7 engine had all 6 injectors replaced as well as HEUI pump. B. Total milage is almost 100 K. Having issues with this engine. I have a 2007 fleetwood Discovery 39V with a Cat C7 330hp, excuse me that I'm new to having a DP but something I've noticed that when I first start it up is seems to take longer than normal, whatever that may be to actually start. Suspect an intermittant speed sensor issue. 23 When this happens the engine will run rough for a few minutes and it will appear number 6 is not firing. I recently installed an MP-8 on my 2004 Vectra. Deadeye: Posted 8/24/2023 20:48 (#10374264 - in reply to #10374250) Ford f650 2005 Cat c7 kal series. Login; C7. My mechanic is a Cummins tech with tools for Cummins only but suggested I find a way to get a Cat tech with a computer to run a diagnosis so he knows the direction to go Cat has the ECM setup on most of there engines to enter what they call a "cold mode". Once. Today, this morning, we started the bus while in KY, drove from Il on our way to our place in TN. Intake heater seems to be cycling as normal. it starts great and runs good when is cold in the frst 5 minutes, then runs rough feels like a miss. 4. They took it to dealer. haqqbx lbwpv zqteeto oidgkm tdegoq qskkbup txsmt vwtt qbhn sqau