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Guystapo 06-01-2011 07:14 AM

1989 High Idle
I have a 89 yj 4cyl that idles great when cold but when hot reaches about 12-1300. I cannot find anyway to lower this..any ideas.

RLaFitte 06-01-2011 07:26 AM

Yours is still a carbureted engine, right?

Undead-89 06-01-2011 02:24 PM

89 Four cylinders are throttle body injection.

Xpress 06-01-2011 11:14 PM

Same issue with mine. Take some carb cleaner and begin giving little spritzes around the joints. If you have an airleak somewhere, that will let you find it pretty quickly.

An air leak would cause the mixture to be lean (more air than gas), so the system is dumping more gas in to get the mixture correct, causing the high idle, or so I am assuming.

Guystapo 06-02-2011 06:52 AM

high idle
I will try that ..Thanks

Guystapo 06-06-2011 07:28 AM

High Idle
I tried spritzing the carb cleaner and cannot notice a difference ..New Thermostat (190) and Rad and its now showing that its running about 220...thats what its showing.

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