Forum Discussion
hershey
Sep 11, 2014Explorer
The reason you get a fault or code when using the engine brake is because the engine is over-revving on your decent. Your engine could be red-lined at about 2750. That number is for peak rpm on acceleration. When the engine brake is engaged you can easily exceed that number. That isn't a problem There probably is a de-acceleration number on the engines but its a larger number than the acceleration rpm number. You engine computer will prevent the engine from over-revving when using the engine brake but it still shows up as a fault code and the code light will light up. Rest easy.
About Motorhome Group
38,705 PostsLatest Activity: Jan 14, 2025