How do you change a fuel pump

Tiny
ELMOSNOOPY
  • MEMBER
  • 2004 PONTIAC GRAND AM
  • 82,905 MILES
A mechanic says, my car needs the fuel pump replaced, The problem started when my car wouldn't start and turn over after work. So I called a tow truck and as the tow truck showed up, an hour later my car decides to start up when I try it one more time. A day later it worked fine in the morning, but died later that day in the middle of an intersection as I was crossing it. How can I be sure the mechanic really changed out the fuel pump in my car and not just a fuse. It cost 700 dollars for the work on the car, and nothing was moved in the trunk of my car. Don't you have to remove the spare tire in the trunk to get to the fuel pump? Thank you, for your help.
Thursday, March 1st, 2012 AT 3:42 AM

21 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Hello,

It sounds like you might have a bad fuel pump. When the car doesn't start see if you have fuel pressure.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Here will give you an idea of how to change the pump out.

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

Check out the diagrams (Below)

Please let us know what you find.

Cheers
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Thursday, March 1st, 2012 AT 3:55 AM
Tiny
ELMOSNOOPY
  • MEMBER
  • 1 POST
Yep the fuel pump was bad took me all day and 205.00 of the pump module but the car runs great now. Thanks!
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Sunday, March 11th, 2012 AT 3:05 AM
Tiny
MGTREMMOR1
  • MEMBER
  • 1 POST
  • 1999 PONTIAC GRAND AM
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 150,000 MILES
I'm going to replace my fuel pump. I am aware that the pump is in the tank. Is there an access hole or do I need to cut one. If cutting one is the answer, is it better to go in from the trunk or under the back seat? And where do I cut so I can keep the body repairs to a minimum? Thank you for your time, Mike
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Monday, March 4th, 2019 AT 6:37 PM (Merged)
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
You have to drop tank to remove fuel pump.

DO NOT CUT ANY HOLES IN BODY TO ACCESS FUEL PUMP FROM ABOVE.

This can cause many problems including the possibility of cutting into the tank and causing a fire/explosion.

Use car repair link in this thread or get a Haynes manual. It will give detailed instructions, read it first, you may deciede you would be better off having it done at a garage.

Make sure it is the fuel pump, check fuses and FP relay first
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Monday, March 4th, 2019 AT 6:37 PM (Merged)
Tiny
LPMANN
  • MEMBER
  • 2 POSTS
  • 2002 PONTIAC GRAND AM
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 80,000 MILES
Does the fuel tank have to be removed from the car in order to replace the fuel pump or can this be done through the trunk?
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Monday, March 4th, 2019 AT 6:37 PM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS


https://www.2carpros.com/forum/automotive_pictures/170934_pontiac_1.jpg



Hello, the database shows, you drop the tank.
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Monday, March 4th, 2019 AT 6:37 PM (Merged)
Tiny
LPMANN
  • MEMBER
  • 2 POSTS
Great site and great members, thanks for the help.
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Monday, March 4th, 2019 AT 6:37 PM (Merged)
Tiny
R9169Y
  • MEMBER
  • 1 POST
  • 2003 PONTIAC GRAND AM
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 70,000 MILES
What is an average cost of replaceing a Fuel Pump on the above model car?
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Monday, March 4th, 2019 AT 6:37 PM (Merged)
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Depends on labor, but labor is 2 hours and the part is $450.

So if labor is $75 an hour, you would be looking at $600.

This part is the complete pump assy. Including gauge sender.
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Monday, March 4th, 2019 AT 6:37 PM (Merged)
Tiny
COLDSTEEL9MM
  • MEMBER
  • 21 POSTS
  • 1993 PONTIAC GRAND AM
Is there an access hole under the back seat to change the fuel pump or do I have to lower the tank completely?
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Monday, March 4th, 2019 AT 6:38 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Tank must be dropped to acess pump

Roy
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Monday, March 4th, 2019 AT 6:38 PM (Merged)
Tiny
COLDSTEEL9MM
  • MEMBER
  • 21 POSTS
Thanks for the great news.
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Monday, March 4th, 2019 AT 6:38 PM (Merged)
Tiny
TIMBELEW12
  • MEMBER
  • 3 POSTS
  • 2003 PONTIAC GRAND AM
Engine Performance problem
2003 Pontiac Grand Am 4 cyl Two Wheel Drive Automatic

my grand am recently just quit running
so I changed the fuel filter which was plugged
now I get no fuel line from the tank but it was pumping fuel before I change the filter is there a cut off switch
or is it possible that the pump went bad as well
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Monday, March 4th, 2019 AT 6:38 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
There is no inertia switch (shut off switch). Check the fuel pump relay, in the underhood fuse block.
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Monday, March 4th, 2019 AT 6:38 PM (Merged)
Tiny
TIMBELEW12
  • MEMBER
  • 3 POSTS
Thanks for your quick reply
i have checked all fuses and relays relating to the fuel system I just don't want to take it to the shop and pay a arm and leg to find out it was something I can do for half the price
how much pressure should spray out fuel from the line coming from the tank it is disconnected from the filter
should it be high because it was just barely running out
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Monday, March 4th, 2019 AT 6:38 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
With ignition switch to the RUN position, engine off, the pressure should be 50 - 60 psi but will only last for a couple of seconds without using a scan tool to enable the fuel pump relay.
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Monday, March 4th, 2019 AT 6:38 PM (Merged)
Tiny
TIMBELEW12
  • MEMBER
  • 3 POSTS
Ok then I must be the pump because it did come out with a full stream but maybe no more than 10-15 psi maybe but after a couple of times then nothing came out from the fuel line from the tank and the pump made no noise does this sound like a fuel pump problem
thanks in advance you have been very helpful
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Monday, March 4th, 2019 AT 6:38 PM (Merged)
Tiny
DENISEKAV
  • MEMBER
  • 2 POSTS
  • 2005 PONTIAC GRAND AM
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 150,000 MILES
How much to replace a fuel pump on a 2005 Pontiac Grand Am SE, 6 cyl? Parts and Labor.

Thanks!
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Monday, March 4th, 2019 AT 6:38 PM (Merged)
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Need to know oem part or after market

and shop or dealership.
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Monday, March 4th, 2019 AT 6:38 PM (Merged)
Tiny
DENISEKAV
  • MEMBER
  • 2 POSTS
Well, we got a bill from our trusted mechanic for $830. He has never ripped us off. Not a dealer, but an independent shop. Not sure if the part oem, but he said the part was $500 and labor and tax about $330. Thanks!
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Monday, March 4th, 2019 AT 6:38 PM (Merged)

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