93 lum euro 3.4 fast cold idle

west50_1 · 09-20-2004, 08:31 PM

93 lumina euro 3.4 on cold start- up wants to idle above 2000 rpm's until warm, than idle's down. Have replaced fast idle control did not help. any suggestions?

richtazz · 09-22-2004, 12:42 PM

did you clean the IAC motor seat? and did you reset the computer so it will recognize the new part? If you did both of these, I would check for a sticky EGR valve next.

west50_1 · 09-22-2004, 05:21 PM

Quote:

Originally Posted by richtazz

did you clean the IAC motor seat? and did you reset the computer so it will recognize the new part? If you did both of these, I would check for a sticky EGR valve next.

I cleaned seat with carb cleaner, by reset computer do you mean unhook batt. yes. New problem, check engine ligtht, came on, map sensor. Replaced sensor, reset computer. now on occation I get a vac howl around the egr. when you put pressure on in the noise changes. Also carb cleaner will bubble at the base, but does not change rpm's

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