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Idles at 2000 RPM's

4K views 3 replies 4 participants last post by  talkativeman 
#1 ·
A friend of mine has a 93 3.8L Thunderchicken.

When it is in neutral it idles between 2000 and 3000. When you step on the gas the RPM's don't come back down for a good 10 seconds. No matter how long you drive it this doesn't change.

The weird part is the check engine light doesn't come on.

I checked the throttle body and linkage and nothing is sticking.

Does anyone have any idea what this could be.
 
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