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  1. 1000RPM idle, a bit high but what is it?

    164 & 168 (1991-1995)
    So, I'm having this ongoing battle with Joe's 164, an '89 V6, manual. When cold the engine idles nicely. When warm the idle speed is around 1000RPM. It idles smoothly and drives smoothly. Unplugging the idle air valve causes a stutter, then increases the idle speed further. I have put several...
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