Idle keeps going up and down.......


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Idle keeps going up and down.......

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Auto Repair Home>> Automotive Repair>> Car Troubleshooting

Guest
Anonymous Poster
mwgrant129@aol.com

Nov 23, 2006, 9:37 PM

Post #1 of 5 (3361 views)

Idle keeps going up and down.......	Sign In

I have a 1994 Ford Escort. When I start the car the idle goes up and down. The idle goes way down where the car sounds like it's going to stall, then it will come back up again to regular idle. It keeps doing this, up and down, up and down. Can someone help me out?

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 23, 2006, 10:55 PM

Post #2 of 5 (3358 views)

Re: Idle keeps going up and down.......	Sign In

Start looking for some cheap and easy stuff like vacuum leaks, air cleaner housing being secure and for wires that may be damaged.

There are a lot of things that could cause this and not all will trigger a check engine light Start with that and see what you find, T

darrin
Anonymous Poster
ga_fisherman_2000@yahoo.com

Nov 24, 2006, 8:46 AM

Post #3 of 5 (3352 views)

Re: Idle keeps going up and down.......	Sign In

worse possible cause would be head gasket. had that happen to my tercel. i think the distributor might be too. especialy if its the older type which can be adjustable for timing. but yeah there can be alot of things.

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Anonymous Poster

Nov 26, 2006, 11:20 AM

Post #4 of 5 (3344 views)

Re: Idle keeps going up and down.......	Sign In

I forgot to put in my first post, the idle only goes up and down when you first start the engine, a cold engine. Once the engine heats up, the idle will run smooth.

darrin
User

Nov 26, 2006, 11:45 AM

Post #5 of 5 (3342 views)

Re: Idle keeps going up and down.......	Sign In

check the compression of all cylinders. you might have a leaking head gasket. it only happens when the engines cold. but once it warms up the metal expands and seals it off. it's just a small leak right now but give it time it will get bigger. also check the oil for antifreeze and the radiator for oil. the oil will apear grayish. thats water. if it is you need to check the head gasket. you might not see it right off but i'd keep an eye on it. let me know if this helps any.

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