Question about 1991 Pontiac Firebird

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Can i put an external electric fuel pump on 1991 firebird with 3.1l motor using oe fuel lines and oe fuel preasure regulater and should i use an emergency cut off switch? and would it be safe under hood or on frame rail by filter

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

bunnydawg
  • 5158 Answers

SOURCE: My fuel system is vapor locking.

I suspect this is what is wrong.... (see picture) the sock has caught onto the bafflle inside the tank....

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Posted on Mar 18, 2009

  • 202 Answers

SOURCE: 87 firebird fuel pump

Remove the exhaust, drop the rear end, remove the fuel cap, and surrounding rubber flange. remove the two hanger straps (be sure to have fuel tank supported so it doesn't just fall out. Remove hoses/electrical connector. Pull tank out, and remove metal lock ring that holds fuel pump assembly in place. Remove fuel pump assembly. Installation is reverse of removal. I have had 7 of these cars, and am currently driving one now. If you have any other questions about it, please ask!

Posted on Mar 27, 2009

motor1258
  • 6674 Answers

SOURCE: 89 firebird blows fuse that powers fuel pump and ecm?

That joint & where wires separate, would be a good spot to use a clamp on amp meter, if you have, or know someone who has one, then you could get reading on each one, and zero in on one(s) with most draw.

Posted on Apr 01, 2009

tse22
  • 103 Answers

SOURCE: I have a 1991 Firebird V8 305 with TBI. Car was

Check your fuel pump relay

Posted on May 12, 2009

  • 2418 Answers

SOURCE: how to change fuel filter in 88 firebird 305 5.0

Some of the Camaro/Firbirds had access to the fuel pump in the rear behind the rear pass seats on top of the hump. Some folks have learned to cut their own access in this area due to the amount of work involved in getting the tank out, as it can be a job. So pull the carpet up in the rear to see if yours has this access. If not you ether have to drop the tank or cut your own access, If you cut your own access you will need to make a good cover, you will need 3 brass  compression union fittings 5/16 inch I believe. You have to cut the fuel lines with a hack saw. You do not have room for a tubing cutter, they have to be cut close to each other, but leaving room to get the nuts on the fittings. It can be done this way but first time is very hard to do. Just remember you are playing with a fuel tank, no sparks, no flames, no grinders, no goofs. If done right, next time in is easy, takes about 45 minutes in out with new pump, if pump ever goes bad it can be replaced on the side of the road thru the trunk. 

Posted on Apr 09, 2010

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1 Answer

Can i put a external fuel pump on a 91 firebird 3.1l . if so what else might i have to change? thanks. im trying to avoid droping fuel tank.


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i suppose this would work but then u would have water and debris blowing in and it would rust out. i would rather put 3/4 copper pipe into gas opening and slide rubber line through pipe past flap into gas tank and siphon gas into buckets and lift car on jacks and get a buddy to help lower tank or use floor jack and block of wood to lower tank and not destroy floor and create new problems

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