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high idle upon start, then falls and hunts. AMM? 200 1991

posted by  Will740turbo on  Fri Dec 31 11:59 CST 2010
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last visit: Wed Oct 22 16:09 CST 2014
[RELATED]

Hm. I can't say! I think that's a bit odd. Make sure that the throttle stop set-screw is adjusted right and your throttle plate is shutting completely. Also make sure the throttle body is clean. Some people use the set-screw to increase idle if something like the IAC isn't working.

Being methodical is key! Good Luck!
--
1990 740 Turbo, on its way to stock specs, maybe beyond






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