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engine surges at stop sign

- Geo-Metro

Forum Post
01/12/10 13:06
arkansas metro

engine surges at stop sign

What do I need to adjust or replace on my 93 metro 1.0 5speed metro. At operating temps engine surges up and down when you pull up to a stop sign. She also idles up high in cold weather. Could use any help.
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This forum post has messages dated from 01/12/10 through 01/27/10, please be sure to read all the messages. If you feel it is old or outdated, please follow up with a question or comment and someone may be able to update it, or reply with newer information if you have it.

01/18/10 17:58

Arkasasman; Your throttle position sensor in not adjusted correctly. Having it wound too tight causes the surging at idle and causes a high idle RPM when cold. . Back it off a little at a time until the surging quits, and you will have it set right.
01/22/10 11:32
arkansas metro

Geonut Thanks for the reply, since i put this in I have tried what you said and scribed a line before I stared to adjust the throttle postion sensor(tps) but had no luck and set the tps back to the setting. I have checked for vacume leaks, have none.I rebuilt the engine about 12000 mls ago and has run great untill we had a cold snap a few weeks back.My fuel millage has gone down a bit couple mpgs, other than high idle at cold temps or at operating temps and the engine hunting for idle 5 or 6 times at each time I cluth it or stop it runs great. It does not throw a code(check engine lite). This is a 93 1.0 5 speed with a/c . the a/c does not have a belt on it. What happens when the tps goes out? Thank again Geonut
01/27/10 11:02
arkansas metro

Geonut thanks for the input. I repaired my problem, cleaned the EGR valve port thru the intake and fixed the problem and also replaced the pcv valve run like a new car.
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