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Old 01-21-2013, 01:26 AM   #3
goinloco1
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Join Date: May 2004
Fan#: 8529
Location: Aberdeen, SD
What I Drive: 13 stang

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You have a vacuum leak. Being the cars that old I'd venture it's either the intake gasket or an injector oring.
as for the problem since getting a tune, check to make sure your tb butterfly isn't closing all the way. should have about 1/8" gap (may have to play with the adjustment to find what the car likes, trial and error). otherwise it will set itself to high idle using the iac.
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