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Fast idling when it's cold


Quark's Avatar
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Join Date: Oct 2001
Posts: 129
GA

11-15-04, 05:25 AM   #1  
Fast idling when it's cold

'90 Geo Tracker 5-speed 145K miles fuel injected

Hi, whenever I crank my Geo on a cold day it idles at 2500 RPM's until it warms up. Then, when it's almost warm it starts fluctuating rapidly between 2000 & 2500. Then it goes down to normal once it is warm. Has anyone heard of this before & is there anything I can do?

Oh yeah, it only happens at cold temperatures.

Thanks

 
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Quark's Avatar
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Join Date: Oct 2001
Posts: 129
GA

11-16-04, 05:54 PM   #2  
Anyone have any ideas?...I hate to start playing with the idling, b/c it stops idling so fast after the engine warms up.

 
majakdragon's Avatar
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Join Date: Jul 2003
Posts: 7,827

11-16-04, 06:08 PM   #3  
Sounds like your automatic choke is working "almost" right. It's doing what it is supposed to do but has a little problem when it should go back to resting. May just be sticking.

 
toyotaman11769's Avatar
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Join Date: Jun 2002
Posts: 1,531

11-16-04, 09:36 PM   #4  
First thing to check would be your coolant level.

 
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