Hello all. I have a 92 500E with an interesting issue. When accelerating from a stop, the engine will intermittently stumble. I have verified with a camera that the throttle is momentarily closing when this happens. There are zero fault codes. I have replaced the throttle body with a reman unit, swapped the ASR, GM and E-Gas modules with test units, and replaced the S29/3 idle switch on the accelerator pedal. Anyone experienced this? Thanks!!
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500E Intermittent stumble
- Thread starter RtTech
- Start date
I agree. Also double-check that all modules are FULLY seated in the CAN box. 90% seated can cause some weird stuff to happen.
Not long ago, a forum member found the root cause of a bizarre problem was the metal socket had partly pushed out of the plastic connector (pin bush housing) that a module pressed into. Fixing the socket cured the problem. Wouldn't hurt to eyeball those too.
