Three problems related to engine knocking noise have been reported for the 2014 Jeep Grand Cherokee. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 Jeep Grand Cherokee based on all problems reported for the 2014 Grand Cherokee.
Rocker arm issue on the 3. 6l engine seem to be a fabrication problem that the company will only fix if one of those brake during the warranty. After that you're on tour own. It is unfair that the company knowing that the engine have an issue will not recall it and have it fix. The bering fails and the engine start making a knocking sound creating all sort of failing codes on the pcm.
Lifters collapsed into the engine at 145k miles requiring installation of new engine. Vehicle was less than 5 years old. At 2 years of age vehicle was making knocking noises and the check engine light was on. We brought it in for repairs multiple times replacing all lifters, rockers, cam shaft and catalytic converters all at our expense. Each time the check engine light came back on in less than 2 weeks and the knocking continued. After spending all of this money the end result is having to spend more on the new engine.
Tl the contact owns a 2014 Jeep Grand Cherokee. The contact stated that while driving at highway speeds over 80 mph, the check engine warning light illuminate and the speed was reduced to 40 mph with a knocking sound coming from the engine. The vehcile was taken to an unknown dealer who diagnosed that the engine coil packs were defective and needed to be replaced. The contact indicated that the coil packs were replaced on 7 separate occasions for the same failure. The manufacturer was notified of the failure. The failure mileage was 42,000.