PACCAR Incorporated (PACCAR) is recalling certain 2023 Peterbilt 220, 389, 520, 536, 537, 348, 367, 567, 548, 579, and 2023 Kenworth T680, K270, T440, T880, W990, K370, T280, T380, T480, T800, and W900 vehicles. The engine control module (ECM) may experience...
Engine & cooling
Kenworth T680 Engine problems by year
10 complaints filed with NHTSA about the Kenworth T680's engine & cooling. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.
Engine complaints by model year
Engine recalls
PACCAR Incorporated (PACCAR) is recalling certain 2021-2022 Kenworth T680, T880, W990, T800, W900 and Peterbilt 579, 567, 389, 367 vehicles equipped with a Cummins X15 engine. The capscrews that attach the flywheel to the crankshaft may have been improperly...
PACCAR Incorporated (PACCAR) is recalling certain 2017-2019 Kenworth C500, T600, T660, T680, T800, T880 and W900 trucks, as well as Peterbilt 367, 386, 389, 567, 579 and 587 trucks, equipped with Cummins ISX15 or X15 diesel engines. In certain driving...
Latest T680 engine complaints
The contact owns a 2022 Kenworth T680. The contact stated that while driving approximately 70 MPH, the Engine Control Module (ECM) or the Engine Control Unit (ECU), started to lose power, eventually displaying a black screen. When attempting to drive and accelerate up to 50 MPH, the vehicle suddenly lost power. The contact stated that a timer displayed a countdown from one hour, and once the timer reached 0 minutes, the vehicle automatically shut off. The contact would coast to the side of the road and wait before...
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restarting the vehicle to continue driving. The vehicle was taken to the dealer, who diagnosed that the ECM/ECU and oxygen sensors both failed and needed to be replaced. The ECM/ECU was repaired. The manufacturer was not informed of the failure. The failure mileage was 450.
We have under hood fire during operating the truck. The driver was driving in TX. The police and fire department need to be involved to extinguish the fire. The truck need to be towed to terminal. The two dealers were doing estimate and the try to look up the causes of the fire, but is seems they not able to find it. We asked some privet mechanics and they think that fire could start from starter. The truck is 2019 T680 455,972 miles with engine Paccar MX-13. The truck is available fot inspection.
We bought this truck with 401, 000 miles on it. So far we have had to replace the rear ends twice. the whole DPF system, the check engine light still on since the day we bought the truck. We have had 5 NOS sensors put into the truck, 6 input and output sensors put into the truck. This truck has been defective since the day of purchase. We keep having the same error code of p3770 come up evetime we take to shop. The error code has been looked at so many times that even the master techs don't know what is wrong with the truck other then we keep replacing the same stuff over and over again.
The contact owns a 2015 Kenworth T680. The contact stated while driving at 55 MPH, he noticed smoke coming through the AC vents and from underneath the hood of the vehicle. There was no warning light illuminated. The contact veered to the side of the road and opened the hood of the vehicle. The contact noticed that the water pump was leaking and one of the hose pipe was cracked. The contact was able to drive the vehicle to a nearby independent mechanic. The independent mechanic diagnosed that the water pump and...
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the hose pipe needed to be replaced. The parts were replaced; however, the failure persisted. The vehicle was not repaired. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 924,278.
The contact owns a 2017 Kenworth T680. The contact stated while driving downhill at 65 MPH, the check engine warning light and other unknown warning lights illuminated. The "Engine Failure. Stop Vehicle" message and other messages were displayed. The vehicle lost motive power. The contact was able to pull to the side of the road. The contact was unable to restart the vehicle after several attempts. The contact opened the hood of the vehicle and noticed that fuel was leaking. The contact then turned off the ignition...
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and the fuel stopped leaking. The contact then noticed that the fuel line that went from the fuel pump to the engine compartment had ruptured. The contact contacted an independent mechanic who arrived at the scene. The independent mechanic replaced the fuel line. The contact was able to start the vehicle and continued driving. The contact referenced NHTSA Campaign Number: 18V657000 (Engine and Engine Cooling). The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 457,000.
Apparently there is a failure of the fuel pump in most models of this cummins isx15 motor, tha when it does fail, shuts the truck down on highway, or worse, lik eit did to me....Send metal shavings into the rest of the motor destroying the motor. There have been recalls for ceramic plungers, which I don't have...And recalls on many years this model was manufactured. I have an extended major component warranty that cummins will not honor since the fuel pump failure is not covered.....Dealer has witnessed many...
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failures of the fuel pumps and not always covered...Even though repair or replacement of engine is in excess of $20000 to $35000 for a new replacement. This needs to be addressed with cummins !!
A vibration is felt during warm up and becomes very noticeable after shifting into 8th gear. If the air compressor kicks in while the engine is below 1300 rpms this also increases the vibration , again real bad shifting into 8th and air compressor running .Note: I just bought this truck from kenworth sales company , salt lake city, ut I aint even put 2,000 miles on the truck, what kinda of deceitful ethics violations are practiced from this dealership?
My 2015 kenworth t680 from what I was told by the dealer shop has a defective fuel pump that causing the engine of my to stall in the middle of the highway almost caused me a terrible accident, but the manufacturer refused to take responsibility so I am placing this complaint to see if I can get any assistance, thanks.
I have always any lights on my truck / now cheek engine light on for ccv speedo rotor / sensor nox all most $3500 doller need fix / I don't have / before I lot money put on repair/
Bunk wiring harness is shorting out causing truck to not be able to shut off with the key....And also causing problems with the def system....Shops are telling us that there are trucks burning down from this faulty harness...And there has been a recall for this but kenworth is not fixing this harness and expects the owner to fix it ....
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data