NHTSA Complaint #11640992 — 2018 DODGE DURANGO

Right hand and left hand intake camshaft were damaged by the slider rocker finger follower. Cylinder 5 was the worst. Metal was sent through the overhead and got into the intake phaser. Parts were recently removed by the dealer and should be available if request is made shortly. Failure was found prior to catastrophic failure due to noise from the engine compartment. Vehicle was dropped off in the overnight drop box to allow vehicle the best chance to replicate the noise. Noise was only noticeable during cold starts below 30°f at idle and no load. Once the car warmed up, the noise was much less noticeable and could easily have been overlooked. No check engine lights were illuminated. If problem was not corrected, I'm confident this vehicle would have left me stranded by loss of power during driving putting me and my family in an unsafe situation. I first noticed the objectionable noise in November 2024 but was unable to get it to replicate reliably so a dealer could diagnose it. The problem was replicated by a dealer and components were replaced under warranty @ 53,272 miles. Oil changes were completed in line or ahead of the oil life monitor system in the cars instrument cluster. This seems to be a cold climate design issue with no oil being provided to the intake camshaft to sliding rocker finger follower interface during start up as oil appears to be fed from exhaust side lash adjuster. I suspect this same issue will reappear as the replacement parts are the same with no apparent improvements. Since the repair I've noticed improved fuel economy, smoother accelerations and shifts, and overall less noise. The degradation of these things before was slow enough to be unnoticeable.