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Discussion Starter #1
I have a 1989 s10 with a 2.5 liter in it and when I am driving down the road the check engine light does not come on but as soon as I stop the check engine light will come on, but as soon as I start going it will go out. The light only comes on when I stop and the truck is at an idle.

I have no idea can someone please help?
 

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Wire Splicin Fool :-)
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8,692 Posts
possibly egr? TPS? Whats the engine doing? Also Pull the code, there are plenty of posts on that and the codes.
 
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