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Engine & cooling

Ram Promaster Engine problems by year

137 complaints filed with NHTSA about the Ram Promaster's engine & cooling. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Engine complaints by model year

YearEngine complaintsCrashesInjuriesRecalls
20260001
20253001
20244001
202325001
202211001
202113001
202010001
20190001
201812001
201626000
201519000
201414100

Engine recalls

Latest Promaster engine complaints

2024 Ram PromasterElectrical systemEngine & cooling

The contact owns a 2024 Ram Promaster 3500. The contact stated that while driving 40 MPH, several warning lights illuminated. In addition, the engine overheating message was displayed.The contact stated that while attempting to turn off the vehicle, the vehicle failed to turn off. The vehicle was taken to the dealer several times, but the failure was not duplicated. The failure became recurrent. The vehicle was taken back to the dealer, but the failure was not duplicated. The contact was advised to disconnect the...

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battery to turn off the vehicle. The contact was dissatisfied with the suggestion. The vehicle remained at the dealer for additional diagnostic tests. The manufacturer was made aware of the failure, and a case was filed. The contact was advised to take the vehicle back to the dealer. The failure mileage was approximately 14,000.

Filed Incident Electrical system · EngineNHTSA 11776178
2022 Ram PromasterEngine & cooling

asking when i look up this van it comes back as a cargo van, But with 22a configuration which is a crew van package, org owner used van as a hotel shuttle so was exposed to seldom shut offs so long periods if idling. i think stellantis's automated VIN capture failed to take this into account as it was high duty wear cycle and exposed to high current and i believe that what the recall #67c (b3-or c9c) was to address , i believe NHTSA # is 25v72000. so also was this a consideration ? on your part to convince...

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Stellantis to recall and my van was a omission. i want to be assured that i have a safe van to drive. would like your help if you can to get this van as part of the recall from manufacture vin#[[redacted]] [[redacted]] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Incident EngineNHTSA 11775803
2020 Ram PromasterBody, doors & structureWheels & tiresEngine & cooling

I am writing to file this formal complaint regarding the purchase of a 2020 RAM ProMaster 3500 Cargo Van, which I purchased from High Quality Auto Group on May 11, 2026, for approximately $30,000. Before completing the purchase, I initially test-drove another vehicle that I was interested in purchasing. I was subsequently told by the dealership that the finance company would not approve me for that vehicle. The dealership then presented me with a different 2020 RAM ProMaster 3500 Cargo Van and told me that this...

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vehicle would be a better option because it had fewer miles and was a heavy-duty model. Based on these representations and my understanding that this vehicle was a better option for my needs, I agreed to purchase it for approximately $30,000. Within 15 days of the purchase, the vehicle began experiencing serious mechanical issues. I promptly returned to your dealership to request assistance; however, I was denied service. I later took the vehicle to an authorized RAM dealership for a professional inspection and diagnostic evaluation. The diagnostic identified multiple issues, including: A coolant/antifreeze-related issue requiring service; A defective fuel pump; Failure of the air-conditioning system; and Abnormal engine noise requiring further diagnosis and repair. Additionally, after the purchase, I obtained a Carfax Vehicle History Report that revealed that the vehicle had been involved in an accident in 2024. I was not aware of this accident history at the time I purchased the vehicle, and this information was not disclosed to me before or during the sale, to the best of my knowledge. I later discovered that the vehicle I purchased had significant mechanical problems in addition to the accident history. These circumstances have resulted in financial losses, repair expenses, lost time, and disruption to my work. I respectfully request that High Quality Auto Group provide a fair and prompt resolution to this matter. I request consideration of one or more of

Filed Incident Structure · Wheels · EngineNHTSA 11775322
2023 Ram PromasterEngine & cooling

The contact owns a 2023 Ram Promaster 3500. The contact stated that while driving 65 MPH, there was smoke coming from under the hood. Additionally, there was an abnormal burning odor inside the vehicle. The dealer was contacted by phone and made aware of the failure. The vehicle was taken to the dealer where it was confirmed that the failure and extended damages were associated with the unrepaired recall. The contact researched and discovered recalls, NHTSA Campaign Number: 25V720000 (Engine and Engine Cooling) and 25V330000 (Back Over Prevention); that were associated with the VIN. The manufacturer was contacted by phone, and a case was filed. The failure mileage was approximately 200,000.

Filed Incident Engine and engine coolingNHTSA 11765884
2022 Ram PromasterEngine & cooling

I am submitting a safety complaint regarding my 2022 Ram 3500/Thor Class B RV, VIN [[redacted]], with only approximately 6,858 miles, which I brought to a dealer in the Inland Empire for Recall [[redacted]]. Before taking my truck to the dealer, there was no known coolant leak. The vehicle was in good condition and operating normally. I left the truck with the dealer specifically for the recall service. After approximately two days, the dealer called me and said they had found a coolant-system leak and that I...

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would need to pay approximately 1,500 for repairs. I was surprised because there was no known leak when I delivered the vehicle. I immediately contacted MOPAR for assistance and asked whether the leak could be related to the recall service or whether the repair should be covered. Unfortunately, MOPAR did not resolve my concern. I declined the 1,500 repair. The dealer told me they could not guarantee there would be no leaks after the recall repair was completed. When I picked up my truck, the dealer did not tell me that the coolant leak was still present or warn me about driving the vehicle. I drove the truck home. After getting home, I opened the hood and discovered a long screwdriver left inside the engine compartment. I am not claiming that the dealer caused the coolant leak. However, I am concerned about the timing of the leak, the recall service, the 1,500 repair demand, the lack of warning at pickup, and the screwdriver left in the engine compartment. I respectfully request that NHTSA investigate whether this coolant leak may be related to Recall 67C, the recall repair, an improper repair, or another safety defect. NOTE: I am now seeing on your website that it appears the Recall 67C repair has not been recorded as completed for my vehicle. I have uploaded a screenshot of the information shown on the website for your reference. Please review this discrepancy as part of my complaint. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Incident EngineNHTSA 11762185
2020 Ram PromasterEngine & coolingDriver assistance

The contact owns a 2020 Ram Promaster 3500. The contact received notifications of NHTSA Campaign Numbers: 25V552000 (Back Over Prevention) and 25V720000 (Engine and Engine Cooling); however, the parts to do the recall repairs were unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repairs. The contact stated that while in reverse(R), the back over prevention camera failed to properly operate and failed to display an image of the rear of the vehicle. The...

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failure was intermittent. The coolant level failed to remain at the proper levels and coolant needed to be added frequently. The contact stated that the battery suddenly lost power and need to be recharged more frequently. The dealer was contacted several times; however, the part to do the recall repair was not yet available. The dealer was recently contacted, and the contact was informed that an inspection was needed before ordering the parts. The dealer stated that it might take a day or two to complete the inspection and order the parts but could not provide a time for when the parts would be received or when the repair would be completed. The manufacturer was not made aware of the issue. The failure mileage was approximately 36,000.

Filed Incident Engine and engine cooling · Back over preventionNHTSA 11755901
2025 Ram PromasterEngine & cooling

The check-engine light came on my 2nd day of ownership (less than 100 miles driven by me, but 2032 miles on it when purchased new - RV conversion from Entegra Coach through LaMesa RV), on October 5, 2025. After diagnosis at a Ram dealership (Larry Miller Dodge Ram in Tucson AZ), they identified the code was misfire on cylinder 6, which caused low compression, with a root cause of the intake valves being improperly seated during manufacturing. The dealership replaced some cylinder and engine parts, but the issue...

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recurred on Cylinder 4 after driving it about 5000+ miles, on June 13, 2026. Again, misfire check-engine code and loss of compression on cylinder 4. The engine ran very rough and had loss of power. The engine is still under investigation by another Ram dealership service department (Crest Auto World, Center Conway, NH). I have learned that loss of compression can cause the engine to stall, lose acceleration power (which it did), and potentially throw a rod and blow a hole in the engine. Since this was caused by a manufacturing defect, I am also concerned that there are other vans with this issue on the road.

Filed Incident EngineNHTSA 11753738
2021 Ram PromasterEngine & cooling

The specific issue you are dealing with is Chrysler Recall 67C (NHTSA Campaign 25V720). This recall impacts nearly 300,000 Ram ProMaster vans (model years 2018-2026) due to an overheating radiator cooling fan circuit that poses a significant vehicle fire risk. More than 200 of these are from the VA. Edwards Auto Group In Council Bluffs, IA is trying to make the Veterans Health Administration pay labor for a safety recall that is stated above. I am reporting them because it is a safety recall and we should not...

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have to pay for extra cost such as a 2x4. Please see below. It is my understanding that the Dealer is in the wrong here. •Absolute Free Labor: Dealerships enter franchise contracts with the manufacturer requiring them to execute recall repairs for free. Chrysler (FCA US LLC) is legally obligated to provide the instructions and billable labor hours to the dealership. •The "2x4" Tool Excuse: If a manufacturer's official technical service bulletin specifies a specific physical manipulation or tool - even a makeshift one like a 2x4 - to complete the repair, that labor time is factored into the flat-rate time Chrysler pays the dealer. The dealer cannot pass "difficult labor" or tool costs onto you. •No Deductibles or Add-ons: A dealer cannot apply any separate fees or surcharges to offset their operational challenges while resolving a safety defect.

Filed Incident EngineNHTSA 11752567
2023 Ram PromasterEngine & cooling

While operating a 2023 Ram ProMaster 2500 (3.6L V6) for normal commercial use at approximately 39,129 miles, the coolant began bubbling and engine temperature spiked suddenly while driving. The vehicle was immediately parked and towed to an authorized Chrysler Jeep Dodge Ram dealership as it was completely undrivable. This created a serious safety risk as the vehicle lost drivability suddenly on public roads during active commercial operation. Upon teardown the authorized dealer documented: coolant leaking into...

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cylinders 3 and 4, coolant coming out of exhaust, stretched engine bolts, warped block and head, and internal coolant leak causing overheat. No external leaks from the cooling system were found. The internal component failures caused the overheating not the reverse. The vehicle was still within its active powertrain warranty at time of failure. Stellantis denied the warranty claim under TSB D-23-20 claiming an undetermined overheat caused the engine failure directly contradicting their own dealer's findings which show zero external cause. I have paid $9,000 out of pocket for repairs that should be covered under active powertrain warranty on a 3-year-old vehicle under 40,000 miles. I am requesting NHTSA investigate this failure pattern in the 3.6L V6 Ram ProMaster 2500 as other commercial operators may face the same sudden dangerous failure.

Filed Incident EngineNHTSA 11750236
2021 Ram PromasterEngine & coolingDriver assistance

The contact owns a 2021 Ram Promaster 1500. The contact received notifications of NHTSA Campaign Number: 25V552000 (Back Over Prevention) and 25V720000 (Engine and Engine Cooling); however, the parts for the recall repairs were unavailable. The dealer was contacted, and the contact was informed that parts were not yet available. The manufacturer was contacted, and the contact was informed that parts were not yet available. The contact had not experienced a failure.

Filed Incident Engine and engine cooling · Back over preventionNHTSA 11745891
2023 Ram PromasterEngine & coolingFire

The contact owns a 2023 Ram Promaster 2500. The contact received notification of NHTSA Campaign Number: 25V720000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact stated that while the vehicle was parked, there was a humming sound coming from the vehicle, and the contact became...

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aware that smoke was coming from the engine compartment. Shortly afterwards, the battery was disconnected, the fan was running, and the vehicle was engulfed in flames. The contact stated that the headlights, hood, windshield, and grill were damaged by the fire. There was no one in the vehicle at the time of the fire, and there were no injuries sustained. The contact stated the local fire department was contacted. The vehicle was not inspected or repaired. The manufacturer was made aware of the failure. The contact associated the failure with the recall. The failure mileage on the vehicle was approximately 143,000.

Filed Incident Engine and engine coolingNHTSA 11744810
2023 Ram PromasterSteeringEngine & cooling

The contact owns a 2023 Ram Promaster 2500. The contact stated that while driving at various speeds, the vehicle lost power steering assist with several unknown warning lights, and the check engine and parking assist warning lights were illuminated. The contact was forced to restart the vehicle to resume normal operation. The vehicle was initially taken to the dealer where the wiring harness was replaced; however, the failure returned soon after the repair. The vehicle was taken back to the dealer where several...

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parts including the steering sensor and steering column were replaced; however, the failure returned weeks later after the repair. The manufacturer was notified of the failure. The vehicle was not repaired and remained with the dealer. The failure mileage was approximately 33,000.

Filed Incident Steering · EngineNHTSA 11744172
2023 Ram PromasterEngine & cooling

The contact owns a 2023 Ram Promaster 3500. The contact received notification of NHTSA Campaign Number: 25V720000 (ENGINE AND ENGINE COOLING); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact stated that the vehicle had experienced the failure while in traffic, with the engine overheating. The failure mileage was approximately 24,600.

Filed Incident Engine and engine coolingNHTSA 11742319
2024 Ram PromasterElectrical systemEngine & coolingFire

The vehicle experienced a thermal event that was caused by a defective fan motor. The vehicle has been inspected by stellantis and a third party investigator. Report attached

Filed Incident Electrical system · EngineNHTSA 11741582
2023 Ram PromasterElectrical systemEngine & coolingFire

The vehicle experienced a thermal event that was caused by a defective fan motor. The vehicle has been inspected by stellantis and a third party investigator. Report attached

Filed Incident Electrical system · EngineNHTSA 11741579

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

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