01 Mustang Rough Idle

N_da_Mood

New Member
May 13, 2012
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My girlfriend has had her Mustang for about a year now and just recently it started to idle high and low. It would go back and forth from about 2 grand to 500 rpm. and it will just keep doing that. After you drive it for a bit it will quit. But once you shut it off then start it back up it starts it again. Any help would be greatly appreciated.
 
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