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.

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Old 05-26-2005, 12:57 AM
  #1  
elgato
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Default need help

ok... my car wont run no fuel pressure
it runs when u spray brakeclean in it
i pulled the pump out and hooked it to 12v it functions fine
i replace the fuel pump relay
wat the hell is wrong... is there a fuse somewhere for the fuel pump beacuse it seems like it isnt gettign power to the relay or the pump has any one else had a similar problem
i need to get this fixed
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Old 05-26-2005, 01:36 AM
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mustang8719
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Default RE: need help

Check the safety switch located in the trunk on I think it is the left side.It has a red button make sure it is pressed down.
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Old 05-26-2005, 01:38 AM
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elgato
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Default RE: need help

already done that
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Old 05-26-2005, 01:50 AM
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mustang8719
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Default RE: need help

I will check my wiring diagrams and see if I can find anything.

Also what year is it?
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Old 05-26-2005, 02:45 AM
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elgato
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Default RE: need help

1988 thanks a lot
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Old 05-26-2005, 02:57 AM
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mustang8719
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No problem I will have to let you know in the morning.
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Old 05-26-2005, 03:13 AM
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Quik
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Default RE: need help

i hope you didnt dry test your pump...thats a big no no for a pump. any pump should be in fluid when working

next start checking the wires. see if you have power at the pump
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Old 05-26-2005, 10:36 AM
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stanglx2002
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Default RE: need help

have you checked the relay under the drivers seat
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Old 05-26-2005, 02:21 PM
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elgato
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Default RE: need help

i replace the fuel pump relay as stated previously
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