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.

LOPEY IDLE.......HELP !!!

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Old 08-23-2005, 02:17 AM
  #1  
topdown5.0
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Default LOPEY IDLE.......HELP !!!

Hey gang, 75% of the time after I start my 87 5.0 the idle lopes from 800 to 450 for a minute and then smooths to 650. I am fairly new to my car and dont know where to start. Already tuned it..no change. Anyone have any ideas.
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Old 08-23-2005, 09:59 AM
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stanglx2002
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Default RE: LOPEY IDLE.......HELP !!!

what did you do to tune it what parts did you change
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Old 08-23-2005, 02:48 PM
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86gt5.0HO
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Default RE: LOPEY IDLE.......HELP !!!

You probly have to set your idle. When the car is warmed up go and unplug the IAC, now that the IAC is inopertive set the idle to around 800 RPM's using the screw under the TB. Then turn the engine off and set your tps. After that's done unhook your batt for 30 mins. And your done!
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