Last post on Nov 15, 2009 at 5:27 PM
You are in the Pontiac Grand Prix
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Pontiac Grand Prix, Fuel System, Sedan
#18 of 46 12 MPG HELP!!!!
Dec 19, 2006 (6:17 pm)
I need desperate help!!! 12.2MPG (yea some people think they got it bad with (20MPG) It was at 11.0 MPG before everything I'ved replaced, heres the list.
3.Wire Set (spark plug)
4.oil change every 3K (oil filter too)
5.New PCV Valve
6.New O2 sensor (before catylic)
7.New Fuel Filter
8.K&N filter and intake
Anyone out that can really help. with any Idea Please EMAIL ME at Sol9586yahoo.com as you can see there has been alot of money invested and im not seeing any progress. 12.2mpg city / and 12.5mpg hwy. HELP!!! HELP!!! HELP!!!
#19 of 46 Re: my 2000 grand prix starts but immediately stalls out after about 7 seco
Feb 20, 2007 (9:22 am)
Any ideas what the problem was? My 98 Grand Prix is in the shop at this very moment and the mechanics are stumped.
#20 of 46 Re: my 2000 grand prix starts but immediately stalls out after about 7 seco
Mar 04, 2007 (9:57 am)
Check the fuel pump resistor, a common issue on supercharged engines. Most likely it will run if you hold it floored, but a common issue.
#21 of 46 Re: my 2000 grand prix starts but immediately stalls out after about 7 seco [mkeily]
Mar 06, 2007 (3:44 pm)
I just got my 200 GP GT back from the dealer after the same issue. It turned out to be the Theft Deterrent Module $560. They said their is no way around it. GM had a bulletin out that said the wires were prone to chafing. I hope this helps.
#22 of 46 Re: my 2000 grand prix starts but immediately stalls out after about 7 seconds [ljm1667]
Nov 16, 2007 (10:12 pm)
hey bud, well i dont know if this is much help but my buddie was having the same problem. next time this happens to you un hook your battery for about ten miutes then put back together and see if it still happens if this works them it has something to do with your security system . thats what happend to my buddy grand prix ( i know it sounds stupid buy hey its worth a try )
Dec 21, 2007 (4:42 pm)
i just replaced the fuel pump and fuel filter in my 00 Grand Prix GT and it still sputters every once in a while when i drive it even does it when i drive down the highway it sputters any idea whats up?
#24 of 46 fuel level gauge not reading correctly
Jan 02, 2008 (5:33 pm)
Has anyone delt with the level indicator going from full to empty and not reading anything in between? looking at the part (fuel pump) the sending unit is a part of the pump. I am currently going through the ignition switch replacement due to the heater fan and the console going out (thanks for the info. on this site) and was courious if some one else has had similar issues.
#25 of 46 fuel issues
Jun 24, 2008 (1:23 pm)
I am having problems with my 2002 pontiac grand prix. I lose acceleration on hills when i push the gas pedal the rpms go up but i lose acceleration. Today coming home I slowed to turn on to my road off highway and it died. I got it started after a bit and got it almost home but had to slow down and it died again. I was thinking fuel pump or filter? Any suggestions?
#26 of 46 Re: fuel level gauge not reading correctly [bowerdh]
Jun 26, 2008 (12:30 pm)
Hey man, I've had the same problem with my fuel gauge. When I start my 2000 Grand Prix GT, the fuel gauge shows completely full but with in a few minutes of it running, the gauge drops to empty & the low fuel warning comes on.
I purchased & installed a OEM GM sending unit, but it still did the same thing. A few weeks after that my fuel pump went out so I replaced it with 1 from Auto Zone which come with a sending unit attached. I was really hoping this would fix my problem but it hasn't.
So for months now I've been keeping up with my mileage so I dont run out of gas, but this is getting very difficult as HIGH as gas is now.
If anyone can let me know what I need to do, PLEASE HELP ME OUT & DROP ME A LINE.
PLEASEEEE HELP ME !!!!!