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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
I just bought a 1990 LX and it was running perfect all day and last night i went around the block and the idle wouldn't go down past 2000 rpm. I even stopped because i thought it was too cold but nothin. if you know anything about this please let me know what might be the problem!! Thanks guys
I think you guys mean the IAC motor not maf!!.....and what do you mean by to cold?? is the engine temp not getting up to operating temp?? if so it may be stuck in open loop operation if t-stat is stuck open?? try running a koer test and check for codes if none exist, look for vaccum leaks and clean Iac motor