Quote:
Originally Posted by Duke2.6
The "Microswitch" is in the throttle linkage nest and should be easy to see with the air cleaner off.
The TPS can get dirty/sticky and not send the idle signal, which will cause uncontolled high idle speed. This is often overlooked as a cause of high idle speed. (It's not always the OVP relay!) Often just a good exterior cleaning of the switch and shaft will restore function.
DO NOT DIDDLE WITH THE THROTTLE STOP ADJUSTMENT!!!
The microswitch is easy to check for mechanical and electrical function.
Duke
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Hello Duke.
You are absolutely right one should never touch that stop.
I made the mistake to unscrew the throtle stop adjustment on my car w124, 260E, 1988.
Since it is a nightmare for me to get it back to the right position.
Have you any idea about the adjustment method, or should it be done only by MB dealer or Bosch specialist to have it adjusted.
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Keep us posted especially if your problem is solved
Present cars:
My car: E-class 420CDI, 2008, W211, V8, 180 000km
Wife's one: C-class 220CDI Sport Coupé, Euro, 2002, W203. 345 000km
Son's one: GLK class, 220CDI, 2009, W204
Sold: E-class 260E, 1988, W124, Wonderfull car sold after 489 000 kilometres of reliable services (engine M103, clutch, brake system and 5 speed manual gear box all original).
Sold: E-class, 320CDI, W210, 2000, 225 000km
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