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Discussion Starter #1
This was explained before I'm sure, I just got my 88 GT back from the shop, she runs real nice but the idle surges up and down and I think I remember reading about how to fix this, was it setting the base idle?
 

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ever clean the iac?
 

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Discussion Starter #3
It has a new one in there, although the car has been sitting for a while, I'll check it out.
 

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i saw another memeber do the following

clean the MAF sensor
clean the IAC ( it helped but he needed a new one)
change the coolant temp sensor
changed spark plugs
 
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