Question about 2004 Mercedes-Benz C-Class
Absolutely,well spotted.sometimes it takes hours of "fun"to find the culprit.
Posted on Aug 26, 2010
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Posted on Jan 02, 2017
Tips for a great answer:
Engine stall or RPM fluctuates
is commonly caused by a dirty automatic idle speed control valve and
throttle valve. Buy a can of throttle valve cleaner (do not use
carburetor spray cleaner!) from NAPA or Carquest (made by CRC
chemicals) and spray it into the air intake while the engine is
running, use up about 1/2 the can, engine will try to stall hold the
speed up, shut it down and let it soak for 30 minutes, restart and
blow out the remaining fluid, shut it down and disconnect the
negative battery cable for 5 Min's to reset the base idle control.
Below is a picture of the switch I mentioned.
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