Check fuel cap warning came on[


Asked by Feb 08, 2013 at 10:20 PM about the 2005 Pontiac G6 Base

Question type: Maintenance & Repair

Fuel cap worn out replaced it,Now it idles too high and no fuel pressure.when fuel cap is taken off no  pressure escapes.

4 Answers

get that cap from the dealership?

This obsession with not putting unburned petrochemicals into the atomsphere has us putting a device that makes it breathe it's own output...the EGR..of all tarnation, look-here, have a source of failure! The cap on my toyota seals completely, and don't know if this is right, kinda obsessive, doncha think? The Japanese will stop at nothing to comply with regulations. seems like it should 'breathe' a little, seeing as this is an American buggy, cut us some answer your question, IT SHOULDN'T. The fuel pump is designed to draw the gas no matter what, pulling the tank into a vacuum. It is designed to!...have to admit turning the cap and hearing ssssshhhhsss for more than a couple of seconds is a bit disconcerting.

my MINI just has an ordinary vented cap. bully for the sportscars!

Michael Tutty

NO new car (and that means built after 1970, by the way) has a self venting fuel cap. They should all seal tightly. That is why gas tanks have vent lines connected to a charcoal canister under the hood. Vapors are trapped in the charcoal and are then sucked into the engine to be burned off. Over filling the tank can flood the canister, and then you have to replace it. Fuel injected cars NEED to have the system under slightly positive pressure. The pump, regulator and venting system are calibrated to work together. The 'hiss' should last no more than about 1 second when you take the cap off. Of course, that is not applicable if the car is not running. The vent system should release the pressure when the engine is turned off. In this case, I would guess that you have the incorrect cap or the venting system is not working correctly. Make sure you get the proper replacement cap.

Your Answer

Add photo

Related Questions

  • 2006 Pontiac G6 with over 100,000 miles Warning Chime help! 4 answers

    The warning chime started going off yesterday whilst driving. however, no indicator lights came on with the chime. No doors were open, had a half tank of gas, tires were recently checked and aligne...

    2006 Pontiac G6 Base V6


    Maintenance & Repair

  • Check Engine Light on after changing oil 14 answers

    I had to take my daughters car away from her. There was 0% oil life left and I dont know how long she had been driving it like that. I had the oil changed today and now the check engine light is on....

    2010 Pontiac G6 Base


    Maintenance & Repair

  • My brake light is staying on. What can and should I do to shut it off? 6 answers

    All of a sudden the brake light is staying on and there's no problem driving but the light stays on and doesn't turn off.

    2006 Pontiac G6 Base V6


    Maintenance & Repair

  • 2008 Pontiac G6 electrical issues 2 answers

    I am having a few problems revolving around electrical componants, I was wondering if it could be a short causing this? I'm really hoping its not my BCM or something... Problem #1.) The passenger's s...

    2008 Pontiac G6


    Maintenance & Repair

  • Where is the fuel filter to check or change 3 answers

    Have problems starting sometimes check engine light stays on and flicks on and off sometimes when driving as if it doesn't want to pick up and go

    2006 Pontiac Grand Prix Base


    Maintenance & Repair


Looking for a Used G6 in your area?

CarGurus has 5,666 nationwide G6 listings starting at $999.


Search Pontiac G6 Questions

Pontiac G6 Experts

#1 dandyoun
Reputation 570
#2 Andy Huhn
Andy Huhn
Reputation 520
#3 gmard1
Reputation 490
View All

Related Models For Sale

Used Pontiac Grand Prix"
28 Great Deals out of 4,372 listings starting at $1,500
Used Chevrolet Malibu"
1,104 Great Deals out of 72,184 listings starting at $1,300
Used Chevrolet Impala"
893 Great Deals out of 35,537 listings starting at $795
Used Ford Mustang"
725 Great Deals out of 41,221 listings starting at $900
Used Honda Accord"
1,284 Great Deals out of 78,151 listings starting at $1,395
Used Nissan Altima"
1,404 Great Deals out of 87,430 listings starting at $1,195
Used Chevrolet Cobalt"
101 Great Deals out of 5,544 listings starting at $950
Used Dodge Charger"
669 Great Deals out of 30,158 listings starting at $1,995
Used Pontiac G5"
17 Great Deals out of 634 listings starting at $2,500
Used Honda Civic"
1,138 Great Deals out of 57,877 listings starting at $1,295
Used Toyota Camry"
1,606 Great Deals out of 97,673 listings starting at $895
Used Pontiac GTO"
11 Great Deals out of 512 listings starting at $5,995

Used Cars For Sale

2010 Pontiac G6 Base For Sale
14 Great Deals out of 271 listings starting at $3,921
2009 Pontiac G6 Base For Sale
18 Great Deals out of 476 listings starting at $999
2008 Pontiac G6 Base For Sale
20 Great Deals out of 581 listings starting at $1,900
2007 Pontiac G6 Base For Sale
21 Great Deals out of 619 listings starting at $1,450