2019 Jeep Grand Cherokee engine problems

“Service engine light came on and code read misfire. Tech said that ignition coil one needs replaced and it needed a tune up. They replaced all ignition coils, spark plugs and intake manifold gasket with tune up. Tech said that coolant looked low and checked the reservoir. He said there's a lot of chunks and dried out looking coolant in the reservoir. Recommended a coolant flush at the dealership. Tune up cost almost 1000 dollars. A few days later my teenage son was driving on the highway at 70 mph and out of nowhere a engine overheating warning flashed and the temperature went all the way up and then down and back and forth. My son had to try and get pulled off of the busy highway while overheating. Car was blowing out white smoke. He was stranded over an hour away from home. Had to have car towed. Was told by the mechanic the next day that the plastic oil cooler had cracked and the oil got into the coolant. Causing the engine to fail at only 104,807 miles! Cost for a new motor was 10,400! Shop said he just had the same thing happen on another vehicle with the same engine the week before mine! I had to pay out of pocket for the new engine. Obviously there's a…”

“We found a huge spillage in our driveway and it had a color of yellowish Brown. Took it to the dealership tech found oil and coolant were mixed together and coming out of the overflow tank. Because the oil in the coolant mixed together, it went through all the components in the engine and it is a total loss. The car does not work and it needs a new engine. Had another independent car shop. Look at the car in they agreed. We had no signs of warning of anything being wrong with the car. It ran fine. The temperature gauge remained normal and never overheated. I am reading about a class action lawsuit about this situation that happened to multiple Jeep Grand Cherokees. Since the dealership told us it's a total loss. If you wanted to fix it, it will cost us over 10,000. The mechanic told us that this is not drivable even if you try to drive the engine will 09lock up and you can get into a major accident or even cause one.”

“Component Failure & Inspection: The engine water pump assembly failed. This specific failure is a documented factory defect explicitly covered under manufacturer Technical Service Bulletin (TSB) #9100212 and tracked under NHTSA ID #10244344. The failed component was replaced by an authorized dealership; the physical part is not available, but full diagnostic logs and proof of failure are stored in the manufacturer database under University Auto Center invoice #6044139/1. Safety Risks: The water pump suffered a sudden, catastrophic structural failure while operating at highway speeds—a known vulnerability detailed in TSB #9100212 and NHTSA ID #10244344. This caused an immediate loss of engine coolant and a rapid spike in engine temperature. The vehicle lost power and was forced to make an emergency pull-off onto a busy highway shoulder, stranding occupants in a highly vulnerable position. A sudden cooling failure at highway speeds creates an immediate risk of engine seizure, vehicle fire, or traffic collision while disabled on the roadside. Dealer Confirmation & Inspection: Yes. The failure was inspected, reproduced, and confirmed by an authorized manufacturer…”

“2019 Jeep grand Cherokee, noticed to have leaking water pump, engine showed no signs of overheating. Water pump and thermostat changed due to a small fluctuating of temp gauge but never over the half way mark. Took it in for diagnostics, which, after reading many reviews of ongoing issues with head gaskets in jeeps, even after Jeep said they remedy it in 2016, I asked for diagnostics done on my radiator and head gaskets to only see it was in fact leaking head gaskets. There was no signs other than a leaking water pump and small fluctuation when the water pump started to leak, but engine never read that it was overheating nor did oil temp. Seems to be an ongoing issue with the 3.6L engines that Jeep is still selling and a lot of people are paying for major engine repairs, at such lower mileages.”

“One day after driving the vehicle around town and after we parked it in the garage, we noticed a large pool of oil on the garage floor. After taking it to a service station, for inspection, we were told that the oil leak was caused by a cracked plastic oil cooler. We were told if we had not noticed the oil leak, the engine could have locked up and caused a serious accident. The next day we were going to take the vehicle on the highway for a trip. The service station said they have had multiple cracked plastic oil coolers come in for repairs on the same vehicle, year, make and model. There was no warning.”

“While attempting to park my vehicle, it suddenly accelerated on its own, causing the car to move quickly toward a tree and a nearby building. I immediately attempted to stop the vehicle by pressing the brake pedal, but the car continued to accelerate. The engine was roaring, and I even tried using both feet on the brake pedal in an effort to stop the vehicle, but it did not respond. The only way I was able to stop the vehicle was by turning off the engine. Due to the unexpected acceleration and my concern that it could happen again, the vehicle was not safe to drive. A tow truck was called, and the vehicle was transported to a mechanic for inspection.”