BenzWorld Junior Member
Date registered: Oct 2009
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'94 C220 Idle Problem?
I have a '94 C220. The past year or so, it idles really low (especially when the A/C is used!). Took it in, the mechanic said it was the typical bad wire harness- however, enough posts on here indicate that may not always be the issue, so I didn't want to shell out the $ on the unknown.
However, yesterday when I was at a stoplight, the RPMs surged and wouldn't let down. It was all I could do to mash on the brake and not hit the person in front of me. I shut the car off, and turned it back on. Immediately, it surged to at least 4000 rpm.
Does this car use an idle control valve, or idle computer-type unit? If I can find a used one locally, I wanted to try that first. I can't seem to find anything (parts, advice, etc) related to the idle on my car anywhere online!