[Diy_efi] Erratic Idle

[WEG1192 at aol.com]

In a message dated 11/8/02 7:44:50 PM Eastern Standard Time, ben-ceci at msn.com 
writes:

> I have a 90 Sububan 4X4, 5.7L >160k mi, TBI. I am experiencing an erratic 
>  idle problem. When cold it idles ~1000 rpm, once it gets hot and is driven 
>  the idle goes to ~750. The problem shows up after driving a while the idle 
>  will go back to 900-1000 rpm, if at a stop light, it will settle back to 
>  650-700 in drive. I was wondering if anyone had any ideas? I have a 
laptop, 
>  cable, and the winaldl program so I can hook up and collect data, would 
this 
> 
>  be useful? Any help would be greatly appreciated. Thanks, Ben

Replace the IAC motor. They get sluggish when they get carbon buildup on them.

JW

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