5.0L (1979-1995) Mustang Technical 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.

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Old 04-09-2009, 10:50 PM
  #11  
94GTPRO5.0
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well I thought that it might be the IAC but it is new.
So what would cause my bad idle.?
when I first start the car it will idle at 900 RPM's then after sitting there for about 2-3 mims it will drop to about 600 RPM's,and sound like it has a cam and (I know it don't), then when driving the car and coming to a stop I will push in the clutch and it will idle about 1000-1200 RPM's, and when it does idle back down to about 700RPM's it will start making a knocking noise sounding something like (spark knock), coming from the drivers side back of engine.
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Old 04-10-2009, 04:01 PM
  #12  
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***BUMP***
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Old 04-10-2009, 11:06 PM
  #13  
mjr46
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run a koer test and check for codes
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Old 04-11-2009, 01:13 PM
  #14  
minnow81469
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i had that same prob on my 95 gt and it was a bent valve
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