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.

ughhhh!!!

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Old Aug 30, 2006 | 11:26 PM
  #1  
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TMeyer29
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Default ughhhh!!!

so when i start my car after it has been sittin....it starts fine...but then the idle drops down to 0 immediatly...Then i start it again and it starts up fine and holds idle fine....i was thinking fuel pump???
Old Aug 30, 2006 | 11:35 PM
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TMeyer29
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Default RE: ughhhh!!!

bump
Old Aug 30, 2006 | 11:41 PM
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PRO50SC
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From: Maryland Sucka's!!
Default RE: ughhhh!!!

Does this always happen after sitting, if so try this. Turn the key to prime the pump, then do this again 1 or 2 more times and then start it. If it runs fine w/o having to restart the car, the fuel pressure is bleeding down and most likely it's the pump.
Old Aug 30, 2006 | 11:41 PM
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Default RE: ughhhh!!!

does it stay running if you have your foot on the gass if so check you Iac
Old Aug 31, 2006 | 12:00 AM
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Default RE: ughhhh!!!


ORIGINAL: PRO50SC

Does this always happen after sitting, if so try this. Turn the key to prime the pump, then do this again 1 or 2 more times and then start it. If it runs fine w/o having to restart the car, the fuel pressure is bleeding down and most likely it's the pump.
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