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Discussion Starter · #1 ·
I have a 98 GTP Stock when it is warmed up at idle the rpm's r goin up and down but very little i was wondering what the problems could be. I checked the spark plugs and they r ok. it has MSD wires on it.
 

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does it Always bounce up and down? or does it take a few seconds to settle in and stabalize at 710 rpms ??? (or whatever your target idle rpm is)
 

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Discussion Starter · #4 ·
yea
 
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