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1991 Pontiac Firebird Fuel Pump won't turn off

Tiny
JRPWFD
  • MEMBER
  • 1991 PONTIAC FIREBIRD
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 124,000 MILES
The fuel pump won't turn off even with the key out of the ignition any idea's or advice would be great also if anyone knows the location of the fuel relay. I found three relays behind the master cylinder on the drivers side firewall and pulled each one individually and none of them shut off the fuel pump.
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Friday, September 19th, 2008 AT 11:41 PM

9 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Fuel pump relay-see below item no.3 location


https://www.2carpros.com/forum/automotive_pictures/12900_fuel_pump_relay_14.jpg

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Friday, September 19th, 2008 AT 11:57 PM
Tiny
JRPWFD
  • MEMBER
  • 9 POSTS
I pulled that relay and it didn't kill the pump any idea why?
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Saturday, September 20th, 2008 AT 12:05 AM
Tiny
RASMATAZ
  • MECHANIC
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Okay disconnect the oil pressure switch and let me know what happened.
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Saturday, September 20th, 2008 AT 12:08 AM
Tiny
JRPWFD
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  • 9 POSTS
Where is the oil pressure switch?
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Saturday, September 20th, 2008 AT 3:35 AM
Tiny
RASMATAZ
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Its on lower left front side of engine-no picture available-sorry
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Saturday, September 20th, 2008 AT 3:45 AM
Tiny
JRPWFD
  • MEMBER
  • 9 POSTS
Ok i'll give it a shot right away in the morning I just have to pull off the connector right?
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Saturday, September 20th, 2008 AT 4:05 AM
Tiny
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Pulling it off and if it continues the wires gray and orange are shorted together
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Saturday, September 20th, 2008 AT 4:12 AM
Tiny
JRPWFD
  • MEMBER
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I pulled the connector and it shut the fuel pump off so I guess I need a new switch right? And thankyou for all your help, you were dead on.
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Saturday, September 20th, 2008 AT 3:49 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Your welcome and thanks for the donation
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Saturday, September 20th, 2008 AT 3:51 PM

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