idle probs

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idle probs

Postby furious82 » Wed Mar 02, 2005 2:57 am

My 90 5sfe has an eratic idle. It jump up then down then upp then down from about 1200 to 2000rpm. I have it idled high so it wont die at a redlight. When i turn the A/C on it stops for a few minutes then slowly begins again. I have looked at and tested everything i could think of and havent fixed it. I am guessing its a vacume leak but i have looked all over and cant find it. What else might it be if it aint a vacume leak? Any easy ways to find a vacume leak, i have been using eather with no luck.
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Life sucks when you got to much crap to deal with
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Postby illGT4 » Sun Mar 06, 2005 10:12 pm

a/c idle up
map sensor

check the codes
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Postby furious82 » Sun Mar 06, 2005 10:24 pm

I found the problem. It wasent throwing any codes though. The problem was that a wire broke off of teh ISC valve. Its fixed but it does idle high now.
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Postby illGT4 » Sun Mar 06, 2005 10:27 pm

reset the ecu


after that.. bridge diag. and adjust idle.

1200 is fine IMHO
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