2015 Jeep Wrangler Engine Problems

I am having my oil cooler housing replaced once again after having replaced only 4 years ago. I am on my 3rd radiatior and 3 thermostat. This jeep is not driven hard or offroad and has been maintained in excellent condition. This engine is junk and not safe. I have not had warning lights only oil drippings in the driveway yet the oil level doesnt seem to change. If not caught this will cause your engine to lock up.

On a trip on 7/3/2025 out of state the engine failed due to a blown head gasket , which is the third engine related problem I have experienced . Other issues include: Broken exhaust valve spring, cracked oil filter housing. With being the original owner and having only 84,000 miles I feel this has to be an issue Jeep is having with my engine 3.6 Liter V6. I am lodging a formal complaint to hopefully, have help with the $11,000 quoted price to replace my engine. Thank you

The contact owns a 2015 Jeep Wrangler. The contact stated that while driving at 40-50 MPH on the highway far right lane, several unknown warning lights illuminated as smoke was coming from under the hood. The contact stated that the accelerator pedal felt as if the friction was lost against her foot, and the accelerator pedal traveled all the way to the floorboard as the vehicle failed to accelerate. The contact immediately pulled over to the side of the highway, turned off the vehicle, opened the front driver's side door, and noticed smoke and flames coming from beneath the vehicle. The fire department was notified and extinguished the fire. A fire department report was filed. No physical injuries were sustained; however, the contact stated she sustained emotional distress. The vehicle was towed to an independent mechanic; however, the failure was not diagnosed. The vehicle was not repaired. The contact stated that the vehicle was being stored at the independent mechanic. The manufacturer was not notified of the failure. The failure mileage was 138,934.

The contact owns a 2015 Jeep Wrangler. The contact stated that while driving 30 MPH, there was an abnormal sound coming from the engine. The check engine warning light was illuminated. The vehicle was taken to a dealer, who determined that there was a misfire in cylinders #1 and #2, and the right intake valve needed to be replaced. The vehicle was not repaired. The vehicle remained at the dealer and had not been driven since. The manufacturer was made aware of the failure. The failure mileage was approximately 86,096.

Lack of oil in the heads after sitting for a while results in dry valve train at start up and over time results in premature failure of hydraulic lifters not pumping up and rocker arms and cams being dry until oil reaching these parts.

Same problem that I'm having is happening to thousands of people. People are either swapping engines ($20k+) or fixing for ($5k+)Sand debris left in 3.6 engine at time of manufacturing that causes cooling system repair and eventually engine head replacement because of misfire warning. My jeep has 60k miles. Have already replace radiator 2 years ago and now I'm getting misfire on cylinder 2. Ran compression test on cylinder 2 . Only 80 psi showing on gauge compared to 150 psi in the other cylinders. Head is bad. There has been a extended warranty on older jeeps with same engine to fix the issue but, not for 2014 and up. Which makes no sense. PLEASE HELP

while driving at an 50 MPH speed, the check engine warning light illuminated and flashing continuously. The vehicle was not in drivable condition since it was unusually vibrating while either standing or driving at very low speed. The vehicle was taken to an independent mechanic, who determined that there was a cylinder #2 misfire, and that the valve, cylinder head or crack on the casting causing this issue. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 75,000.

The contact owns a 2015 Jeep Wrangler. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to an independent mechanic, who determined that there was a cylinder #2 misfire, and that the valve needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 88,000.

2015 original owner, developed misfire cylinder #4 P0304, replaced coils, plugs, injectors, harness on that side. Misfire still present, noted others have reported issues with cylinder head (valves, cams, rockers). Engine has a slight tick, found no recalls on NHTSA site except for 2014 versions with same engine for this exact issue.

Cylinder 4 misfire

The engine has a known failure causing a cylinder misfire that is resolved by replacing the cylinder heads. This is a known issue to FCA and caused an extension of the powertrain warranty for the 2010-2014 models but does not cover later engines, that are still experiencing the same issues. The covered years needs to be extended to 2018 or beyond and all out-of-pocket repair costs should be refunded to the consumer.

My Jeep has the pentastar 3.6l engine and has recently developed what is known as the “pentastar tick”. This is caused by a design flaw with the valvetrain, specifically the lifters/rocker arms that causes excessive wear which leads to the tick, which may then lead to engine failure and loss of control. This is a very common problem with the 3.6 engine and FCA should be held responsible for the safety recall. FCA has already acknowledged the problem on 2012-2014 engines, and extended the warranty, but not on the later engines. Please look out for the consumer and hold them accountable.

Check engine light came on for misfire in Cylinder 4. Jeep lost power when on the road

I have just replaced the Engine oil filter housing on my 2015 jeep wrangler unlimited rubicon for the fourth time the first three replacements were at East hills jeep on Long Island n.y the fourth repair was at Willis ave repair and diagnostic in Albertson N.Y at a cost of $859.33. Ongoing problem with thousands of other jeeps owners reporting the same issue. during the course of these breakdowns, I’ve had to have my vehicle towed to the repair place twice as the oil had drained out of the vehicle causing fatigue and overheating to the engine. I currently has 95,000 miles on my jeep witch is well taken care of and serviced at the East hills jeep dealership. My concern is future damage to my engine due to the extreme temperatures caused by the lack of oil and overheating due to this defect. How is it that the manufacturer is not held responsible for an obvious defect in a crucial engine component causing multiple replacements to thousands of similar vehicles.

The contact owns a 2015 Jeep Wrangler. The contact stated that while driving at 40 MPH and depressing the accelerator pedal, the vehicle lost motive power and stalled. The check engine warning light was flashing. The vehicle was taken to the local dealer, where it was diagnosed that the oil pressure sensor circuit had failed and needed to be replaced. The vehicle was repaired, but the failure recurred. The vehicle was taken to two other local dealers, Marino Chrysler Dodge Jeep Ram (5133 W Irving Park Rd, Chicago, IL 60641) and Dodge Parts Overstock Parts (2875 Mall Hill Dr, Lakeland, FL 33810), where it was diagnosed the oil pressure sensor circuit had failed and needed to be replaced. The oil pressure sensor circuit was replaced, but the failure persisted. The vehicle was not repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 107,272.

Cranked my vehicle from a cold start and it started running very rough. Had a mechanic put a code scanner on it and it read cylinder #2 misfire. I have been told this is very problematic with the 3.6 pentastar engine and a costly repair. If this is a factory defect I would like to be informed about any and all considerations to which I am entitled to. Thank you very much.

Ticking noise in engine from lifters and faulty pin. Potential failure for cams.

What component or system failed or malfunctioned, and is it available for inspection upon request? The component that failed is the oil filter housing/assembly. It was changed out by the Pep Boys I do not have it on hand but upon research it appears that this is a known issue on the 3.6 and the 3.2 Chrysler Pentastar engines. Mopar made this part out of entirely plastic and it is now failing on a ton of vehicles. The replacement parts are all made out of metal/aluminum. Safety: this not only put myself at a safety risk but also puts other motorists on the road at risk. Not to mention the environmental safety that this can cause. The plastic part contains the oil filter for the engine. After time it warps and fails causing cracks and seal leaks that allows oil to drain out of the engine, onto the transmission manifold and all over the ground/road. There is no warning for this, one day you will walk out and find your vehicle bleeding all of its oil all over the pavement. This could happen to anyone at any time. I would hate to be on a motorcycle driving behind a Chrysler engine when their engine decides to fall apart and slick up the expressway with motor oil. Jeep/Chrysler knows that this is happening, they know it’s a problem because the replacement part is made of metal instead of plastic, and they refuse to do anything about this even under warranty. This is a part that is NEVER supposed to go bad on any cars, this is NOT a wear and tear part. I would like to see them held accountable for their (lack of) actions.

FAILURE OF COMBINED OIL FILTER / COOLER HOUSING RESULTING IN ABRUPT LOSS OF ENGINE OIL AND RESULTING IN SMALL FIRE FOLLOWING EXHAUST SYSTEM SATURATION FROM LEAKING OIL

At 134,000 miles the engine developed a loud ticking. My garage reported that rocker arms, cam shafts and heads needed rrplacement. They recommended that Jeep dealer should be performing the work so that I might have a parts warranty. The dealer reported back that the work would be extensive and recommended engine replacement with a $13,000 estimate.