Last post on Nov 15, 2009 at 4:27 PM
You are in the Pontiac Grand Prix
What is this discussion about?
Pontiac Grand Prix, Fuel System, Sedan
Jul 19, 2006 (2:25 pm)
Does anyone know if there is a way to verify that your DOD is activating? I drive the GXP pretty hard and I am just wondering at what point it activates?
#8 of 46 Re: DOD [smallegan]
Jul 20, 2006 (4:52 am)
I read that a good way to verify when the DOD turns on is to put your information display on 'Instant MPG'. That way, you can watch your actual miles per gallon usage as you drive. I have tried this on the highway. Normally it is around 19-24, but after a few minutes if the road stays level you can tell it has turned on because the MPG starts going up to around 30 or more. I think it has to be running at a constant speed for a set amount of time before it kicks on.
#9 of 46 Re: DOD [dblduce]
Jul 21, 2006 (6:13 pm)
That's good to know. I always watch that screen, but probably not for long enough.
#10 of 46 Re: DOD [dblduce]
Jul 22, 2006 (12:49 am)
I would like to know too,on the Impala ss and the monte carlo ss there is a dummy light that comes on the dash when it is running 4 or 8 cyl. why did gm put that light on those 2 models and not the gp gxp,after all they are the same engines.
#11 of 46 Re: DOD [gxpjoeyp]
Jul 23, 2006 (7:37 pm)
I'm guessing because they made the GXP in 2005, and not the others, and didn't want to change the GXP's design.
#12 of 46 possible fuel problem
Oct 18, 2006 (10:10 am)
I have a 2000 Grand Prix GT and have noticed a high pitched whining noise that increases at low speed accelerations. I've also noticed that when accelerating at low speeds, the engine drags/shutters.
Not sure if these two are related or separate problems.
#13 of 46 Re: possible fuel problem [pckeenan]
Nov 01, 2006 (5:43 pm)
I had a similar problem with a high-pitched whining noise when accelerating and worse when turning. My power steering fluid was low. I had the dealer add fluid and the noise has stopped. Good luck.
Nov 23, 2006 (9:38 pm)
my car is choking really bad when i floor it my car sounds like its dieing out and the rpms are jumping up and down and it kind of shakes a little its a 98 pontiac grand prix sc
#15 of 46 Info on MAF sensor.
Dec 04, 2006 (8:49 pm)
I need a new MAF sensor. I was thinking with going with a Granatelli. Does anyone know any other performance brands that are good for a GTP?
#16 of 46 my 2000 grand prix starts but immediately stalls out after about 7 seconds
Dec 05, 2006 (10:34 am)
I recently have been having a problem with my grand prix that no one can figure out. about a month ago i started up my grand prix and it stalled out after about 7 seconds, it kept doing this so I had it towed to a local service center. I was told it was my fuel injector and regulator. Both were replaced and the car started. I took my car home and about an hour later I started it up and it again stalled out after a couple of seconds. At this time I now had the car towed to a dealer who had it for two weeks. They told me that my fuse box was bad and they replaced it. They guaranteed me that this was the problem. $1400.00 dollars later I got my car back. I was able to drive it for two days with no issues. Again I got in my car to go to work and it started up for a couple of seconds and stalled. I was thinking there was an issue w/ my security system but the dealer said that was not it. Does anyone know what could be wrong with my car. I have had no problems with this car until now. My pocket book is getting slimmer everytime it is at the dealer. Any suggestions on what is wrong with it would be greatly appreciated.