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idle issue attention

98NVS

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3.8L VS Commodore/Raptor supercharger
My vs idles about 900-950rpm then idles high(2000-2300) then idles down just about to stall out then picks up again.... and so on...
 

The1

A Memcal a Day Keeps..
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IAC sounds like it's hunting, is the throttle body and IAC passage clean? No fault codes?
 

98NVS

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Ill check when I get home. Would it have anything to do with idle cable or idle screw??
 

James39

Gave up on VL's
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98NVS

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3.8L VS Commodore/Raptor supercharger
All fixed it was a vacuum line that came out of the vacuum intake sensor on driver side behind manifold.
Runs smooth as now
 

98NVS

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Thanks for the help ay
 
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