Fuel Pump Problems

Vehicle specific forum for tuning the Foxbody Chassis Mustangs utilizing decipha's GUFX Strategy

Fuel Pump Problems

Unread postby 93svt » Tue Mar 10, 2020 8:41 pm

Ok Guys any help appreciated!


The guy I help with a supercharged fox is having a weird problem. This is a new issue because we have got the car 98% dialed in.
So apparently when the car runs for a while the pump will shut off (no noise with KeyOn). Let the car sits for 10 min everything is fine. I advised to check voltage at pump to see if pump may be bad but with new pump same thing. I read there may be a 2nd relay behind pass dash speaker above ECU.

I asked him to join forum but he is out in the boonies so i am trying to help him

Changed/Checked
ECU ground
new Fuel pump
new Fuel pump relay
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93svt
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Re: Fuel Pump Problems

Unread postby 93svt » Fri Mar 13, 2020 11:59 am

I know its not a tuning problem but any suggestions

Trying to go over car for possible loose ground
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Re: Fuel Pump Problems

Unread postby decipha » Fri Mar 13, 2020 6:56 pm

bypass the fp relay to verify its not the dis looking the pip

on the older foxes its under the seat
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Re: Fuel Pump Problems

Unread postby 93svt » Wed Apr 01, 2020 9:53 am

Well found some caps leaking in ECU so they are going off to be repaired.
I hope this is it!
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