Originally posted by WarrenT:
My Mystique idles rather low, around 500RPM, always seems on the virge of stalling out. I was thinking if I increased the idle speed a little it would help this. Does anyone how to adjust the idle speed on the Zetec 4? Thank you.
Welcome. I don't think we can adjust the idle. The only way I can think of is to have the PCM reprogrammed, maybe by the dealer (?) or chipped. If you have a problem with the Mystique idling too low and stalling out, it could be a vacuum leak. You may want to check if you can hear a hissing sound under the hood. In addition, you may want to consider cleaning the MAF, IAC valve, or changing the air filter.
"Always do the cheap and easy ones first."
1996 V6 ATX 96K miles
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