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.

Cold idle surge, gone when @ operating temp

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Old 08-30-2009, 12:09 AM
  #11  
tohoopty
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why are your plugs gapped to .035
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Old 08-30-2009, 12:35 PM
  #12  
nova72sc
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dunno, thats what he wanted to gap em to, so yeah, last night we performed a cylinder balance test, all cyclinders dropped same rpm, but it was dark out and found that the coil leaks spark between the epoxy and the casing, and i have new MSD wirs, but changed 4 of the boots to old autolite angled boots to clear the heads, but every single MSD wire has spark leaking out of the boots at the plugs and actually and even leak out of the wire them selves, so i am going to contact MSD, this problem was before i put the MSD wires on so, mostlikely not the wires, but i am going to replace them.
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Old 09-06-2009, 04:48 PM
  #13  
nova72sc
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k, removed the chip, reinstalled stock throttle body, still no change, i read somewhere that the ignition module could cause this, but i checked it while it was cold with a timing light and it never seemed to retard my timing like the people who replaced it had. i and going to burn the car to the ground, tired off this, need help, guess its about time to just start throwing parts at it till i fix it, really wish i could monitor my PIDS, but don't think EEC-IV has the capabilities for live data, well thanks again
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Old 09-09-2009, 12:35 PM
  #14  
mtoliverjr
 
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careful throwing pieces on. gets expensive fast. 1g spent trying to find my f/a ratio messup point and still no ground covered. my problem emerged when i switched rear gears from 273 to 410
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