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Funny idle at start up.

Old 02-20-2005, 10:56 AM
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97L$Coup3
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Default Funny idle at start up.

just purchased this teg about 3 weeks ago. It is a 97 ls

coupe that was automatic. The guy that i bought it from

is a long time friend that owns a dealership. He did me a

favor by converting it from auto to manual. It has a 2001

GSR tranny with the GSR shifter linkage and shifter

inside. My question is this. I live in N.Y.C, and its cold

right now. So when i start the car after it being off for a

while it does this. After being on for like 2 min. it idles

up then down, up then down, up then down. It does this

for like 2 min. then as the car warms up, it stops and

idles fine. what is causing this. TIA...
Old 02-20-2005, 11:43 AM
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dubcac
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Fast idle thermo valve in the throttle body.
Old 02-20-2005, 12:21 PM
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97L$Coup3
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Will this be expensive to fix?



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