Question about 1990 Mercedes-Benz Mercedes Benz C Class
Loses power on hills or at highway speed
I can think of two possibilities.
1) The air mass meter could be defective, or covered in dirt, and not providing the right fuel mix under a load heavier than normal driving.
2) The monolith in the Cat may be breaking up and blocking the exhaust system, which would again be more noticeable under load.
Both possibilities are usually accompanied by reduced acceleration and a drop in performance but when the problem starts these things may not be detectable.
Posted on Apr 01, 2014
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Posted on Jan 02, 2017
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