I have a 95 Buick Century with a 3100. When I first start it up on cold winter days it revs real high (Im guessing around 7-8k rpms) then settles back down to a normal idle. It also has a slight tick but only with a cold engine. Any ideas as to what is causing this?
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It's unlikely it's going to seven or eight thousand, since these engines redline closer to 6000 in stock form, and the rev limiter in park/neutral is much lower than that. Your car probably doesn't have a tachometer and you're guessing since it does make an awful racket when it revs real high.
I think the idle speed control might be malfunctioning a bit.Kaiser George IX: 1996 Buick Century Special wagon. 213-SFI. 250k miles. Never gonna give you up, never gonna let you down. First documented LX9 swap in an A-body! Click here to read my build thread!
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I would concur. Maybe pull out the IAC and shoot it with some carb and choke cleaner. If it were a vacuum leak (a large one like a brake booster or intake manifold gaskets) it would do it all the time and not settle down (if it would even idle).-60v6's 2nd Jon M.
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Originally posted by Jay Leno
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Park/neutral rev limiter is around 3k, so that is probably as high as it will go. Concur with the IAC.-Brad-
89 Mustang : Future 60V6 Power
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Thanks guys that at least gives me a starting pointComment
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