Question about 1994 Mercedes-Benz C-Class
My 1994 mercedes c220 is surging and revs up and dies down when at a stop and has also shut down a few times . i changed the fuel filter and it is still doing the same thing i need some help please.
Check the idle air control valve. it is on the side of the throttle body. it is a small stepping motor which controlls the air that is allowed to go around the throttle plate. on many cars they can clog with carbon so just removing them and cleaning them and the ports with a screw driver will fix idle speed problems.
Posted on Jun 25, 2009
Check out the EGR valves if you haven't. I've noticed on different forums that this is one component you tend to overlooked when you talk about bad idling. Your egr valve could be sticking open. when it's constantly open it causes a very rough and extremely low idling.
Posted on Oct 06, 2012
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Posted on Jan 02, 2017
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