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Originally Posted by enzo
I have some trouble with my car ´92 300 ce 24 Ke3-jetronic, i´m experiencing difficult cold starts (none warm, cold valve does inject) and high revs idling (no signal going to idling valve whatsoever).
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First, high idle with no drive to the idle control valve means either the valve is frozen open, or, more likely, you have an intake air leak. Most suspect with the KE systems are the rubber formed hoses in the idle air and breather circuits, but a loose or broken vacuum line is always likely too.
Steve