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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.

loss of power problems

Old 12-04-2010, 03:56 PM
  #1  
dowe23
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Join Date: Mar 2010
Location: canada
Posts: 49
Default loss of power problems

alright i have an 88 5.0 and ever since i got it in the spring i've noticed a problem when you hold it to the floor.. its like it doesnt pull the way it should.. till about 35- 4000 rpm then kicks in.. i thought it was the fuel filter, changed that awhile back, helped some for about a week or so then the same thing again.. next guess was fuel pump.. i just droped the tank and im 90% sure it is a rather new fuel pump.. im going to change the pump and clean the tank, the car apart is a winter project so i was wondering if anybody might know what the problem could be if the new pump doesnt solve it while i have it apart.. thanks
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Old 12-04-2010, 05:16 PM
  #2  
Bubba 95SN
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Join Date: Apr 2009
Location: N.C.
Posts: 1,893
Default

Put a fuel pressure gauge on and answer yourself. Check for codes.
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