1987 Ford Mustang fuel pump

1987 FORD MUSTANG
150,000 MILES • V8 • 2WD • MANUAL
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GK3271
  • MEMBER
  • 1 POST
I recently installed a new motor in the car after it sat for about 6 months. When I hooked up the battery the fuel pump started running and would not shut off , causing fuel to leak out the pressure regulator.
the only way it shuts off is by disconnecting the battery or pulling the relay under the seat. do i need to replace the fuel pump? will the new one do the same thing?
Dec 29, 2009 at 12:51 AM
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OBXAUTOMEDIC
  • ✓Experienced Mechanic
  • 3,711 POSTS
Hello

Ok, I would say you have 2 problems...

One the Relay is stuck closed causing continuous power to pump.

The other is a bad pressure regulator.

Check link below to test Relay...

https://www.2carpros.com/how_to/how_do_i_check_a_relay.htm

You can also look at the other relays in the car and match the numbers and just swap them out. Just remember which one you swapped.


.
Dec 29, 2009 at 1:02 AM
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