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.

fuel pump wiring help

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Old 09-21-2013, 11:28 AM
  #1  
rydinturbo
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Default fuel pump wiring help

ive had a problem with a random miss for a long long time and sometimes my car seems to make alot more power than others. . ive ben getting a code 96, i tested voltage at the pump connector and got 9 volts, so i went to the relay and somehow got 35 volts? i dont know how thats even possible but i started ripping apart my car and found all theese splices. theese dont look factory to me lol does any one have pics of there wiring i dont know what to do with theese
http://i19.photobucket.com/albums/b1...psbc1712c0.jpg
http://s19.photobucket.com/user/jgt8...fd655.jpg.html
http://s19.photobucket.com/user/jgt8...fd655.jpg.html
http://s19.photobucket.com/user/jgt8...27788.jpg.html
http://s19.photobucket.com/user/jgt8...948a7.jpg.html

does anyone know where this wire goes
http://s19.photobucket.com/user/jgt8...c4b92.jpg.html
it was all frayed
http://s19.photobucket.com/user/jgt8...bae5d.jpg.html
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Old 09-21-2013, 08:21 PM
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petrock
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Yeah, those splices don’t look factory and look really bad too. If they are still needed I would replace them and use shrink-tubing to properly seal them up.

35 volts? yeah, unless you’ve got multiple 12 volt batteries (3 to be exact) connected in series in your car I think the 35 volt measurement may have been inaccurate. I’d double check that you had the meters set to volts and not milli-volts or some other scale, or that you missed the decimal point in-between the 3 and the 5 on the screen.

Good luck...
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Old 09-21-2013, 11:59 PM
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rydinturbo
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kyjuyjii
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Old 09-22-2013, 12:00 AM
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rydinturbo
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can someone tell me what i should to with the pink wire to the fp relay. it spliced so it runs to the ecm, relay, and pump. should it jus run to the relay and ecm?
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Old 09-22-2013, 08:54 AM
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ALMOST STOCK
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These are from the 1989 Mustang EVTM

Last edited by ALMOST STOCK; 11-29-2013 at 09:38 AM.
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Old 09-26-2013, 05:29 PM
  #6  
rydinturbo
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Smile

thanks does anyone know if some of those splices are stock or not? or have a picture of theres
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Old 09-27-2013, 04:32 AM
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No, they are not stock. Stock splices are soldered and have shrink wrap around them. Or they are actual connectors.
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