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What can be wrong with fuel pump

  • where is relay for fuel pump located?

    Votes: 2 100.0%
  • How can i check fuel pump?

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Discussion Starter #1
Does anybody knows what could be wrong with fuel pump when it does not work? (Iput new one in and still nothing:() i would appreciate any help
thanks again!!!
 

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Discussion Starter #3
Basically my G6 does not wanna start for some reason.
Me and my buddy started directly though a computer but after that it sends us code that we have no comunication between block and tranny for some reason! could it be Security problem?
 

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yeah you need a professional mechanic for this ... cuz this could be anything such as a crank position sensor or something.
 

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i had the same issue, couldnt hear the pump when key was turned to on position.

FINALLY FOUND THE PROBLEM AFTER 6 MONTHS OF FRUSTRATING STARTS AND MONEY WASTED!

its the connection between the fuel pump to the relay behind the rear fusebox.
I pushed the connection (wire harness) together to the back of the fusebox where the fuel pump relay is located on the fusebox. seems to be a misconnection that won't allow the power to reach the fuel pump.

still havent fixed it properly but atleast i know where the problem is located.
hope it helped you guys somehow...
 

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Thanks. Good info. Have you tried putting silicone dielectric grease on the relay contacts & inserting & removing it a few times? That may or may not help. The usual fix is just to replace the fuse block (which is easier than you might think).
 

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Thread Revival Whoo!

Greenman, would you happen to know how much a new rear (trunk) fuse block goes for? I'm worried my bent tabs for the parking lights fuse may come around to bite me in the butt one day. haha
 

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Greenman, would you happen to know how much a new rear (trunk) fuse block goes for? I'm worried my bent tabs for the parking lights fuse may come around to bite me in the butt one day. haha
Not off the top of my head. They are more then they should be because there is only oem available.
 

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i havent tried anything to fix it yet. but when it doesnt wanna start i havta pop the trunk and stick my hand behind the fusebox to push it back in. it helps with the auto start, keeps cranking til the connection is made then fires instantly. it seems to happen quite often now. i think this weekend im going to pull out the fusebox and re-wire it but for now ill try that silicone shit on the relay.

pretty embarrasing when your on the first date and the car doesnt wanna start after dinner. kept trying to crank after half an hour, but all it was, was a dumb connection error.

spent about 900$ to replace the fuel pump. waste of time and money...
other then the amount of gas it burns i finally love this car again....
 

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i think i might be having the same problem, do you mind posting a picture of where your had the wiring disconnect?

and that first date bit is hilarious cuz it happened to me 3 nights ago, but if she still wants to hang out, then you know she aint materialistic!
 

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i think i might be having the same problem, do you mind posting a picture of where your had the wiring disconnect?
that issue involves the socket that holds the fuel pump relay. try manipulating the relay & listening for the pump to run. replacing the rear compartment fuse block is the usual fix. visually, you'll see evidence of localized heat buildup if this is your problem.
 

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Hate to resurrect an old thread but I think I might be having this same problem. 2009 G6 4cyl. Engine cranks and cranks but gets no fuel until I re-seat the fuel pump relay in the rear fuse box. Once the engine gets started everything works fine so I'm thinking it's an electrical issue rather than the fuel pump itself. Can someone provide detailed instructions on checking the cables going to the rear of the fuse box. I can't seem to figure out how to access back there.
 

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Does anybody knows what could be wrong with fuel pump when it does not work? (Iput new one in and still nothing:() i would appreciate any help
thanks again!!!
[/QUOTE]

Hello Frieked!

I had same problem the second day after purchase. Try this: Open car trunk. On the left side of trunk there's the fuel pump relays. I took them both out, put them in each other's place....tried to start car...YEAH!...car started. Seemed to get the SAME problem with car not starting WHEN I put more than $10...or no more than 1/2 tank of fuel.
Drove the car a couple months....then after, I guess, one too many switching relays...here I sit with FUEL PUMP totally finished. Ordering a new fuel pump. This was such an EASY fix...for a while! My advice: fix it before you get stranded! My car is a 2010 Pontiac G6. I still love my car!

----Sinnammon
 
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