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.

347 problems

Old 03-30-2006, 10:36 AM
  #11  
TAPOUT
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Default RE: 347 problems

I just found the problem for mine not idling good. I had missed a vacuum line. It runs pretty good now.
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Old 03-30-2006, 10:57 AM
  #12  
angcobra
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Default RE: 347 problems


ORIGINAL: jw

Well found out one of the problems, the BBK adjustable fuel regulator was pushing out 80 psi at minimum setting! Put back the stock Ford and it idles better, still running rich though, I think it is the computer as when you unplug the MAF the engine idles smoothly - must be compensating too much and giving it too much gas??
When you can adjust fuel pressure you should be able to get it okay without chip.
Tuning of these is all centered on fuel pressure.
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Old 03-30-2006, 12:23 PM
  #13  
88BlueGT
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Default RE: 347 problems


ORIGINAL: TAPOUT

I just found the problem for mine not idling good. I had missed a vacuum line. It runs pretty good now.
Thats a problem... lol well I am glad to hear that you got it fixed!
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