I’d like you to see pic and possibly share your thoughts. All of a sudden dropped down to 60 then 40 and then back to 86. Once coolant temperature start oscillating engine rev change and here yellow check engine came on, first time. What can it be?
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more!