I'm leaning towards ecm too

I can't afford the whole deal, but whoever gets this I could use some parts of the parts car.

Quote from: The Burning Rom on August 06, 2015, 11:10:57 AM
I wonder where they are getting their accumulators..

I also wonder this.

Quote from: GPChief on July 19, 2015, 03:14:02 PM
I love my 2004 gtp, if I could find a GXP I'd get it.  Only prob is tranny is too weak if you drive it hard.

Yea I was warned by a friend who had one. I didn't realize it was only a 4t65e HD. I'm doubtful to get it now.

I am looking to trade in my wrangler and found this.http://www.orleansford.com/VehicleDetails/used-2008-Pontiac-Grand_Prix-Grand_Prix_GXP-Medina-NY/2562518513
It's a few hours away and I think they are asking about 1k too much. Anyone have one?

Oh, I figured there was an amp and they just got rid of the switch in the 90 model. Thanks.

I really don't feel like pulling my door panel until after I get the speakers. Does anyone know the stock speaker size of the door speakers? I believe they are 4". I plan on upgrading them, along with my blown dash speakers (4x6) iirc.


Also, don't we have a stock amp for the door speakers? Where is that located.

Quote from: Heartbeat1991 on June 03, 2015, 01:26:57 PM
Does the pump run every time you push the pedal?  If you just turn the key on and push the pedal, how long does the pump run?


By normal, do you mean TGP normal?  A working PMIII should have a fairly firm pedal.  Have you ever noticed any fluid on the ground?  It sounds like it could be an accumulator.  It also sounds a little like a leaking PMIII.  If you can, jack it up and look around with a light below the PMIII.  See if anything is wet.

Currently I have the motor rotated and all the heat shielding etc. off from looking things over last week.


But yes every time I press it. A couple of seconds, 1-3 max. I'm not sure off hand about just pushing the pedal with the key on.


I actually don't know if I know what TGP normal is, but it used to be fairly firm before it really started acting up.


Fluid on the ground... yea, all sorts of fluid...lol But brake fluid, no I don't think so. I also don't recall ever being low and having to add any.


My fluid did however get like whiteish and foamy. Which is why I decided to change it last year. I figured it was probably 25 years old and it wouldn't be a bad idea to change it with new fluid.


I don't know when I will have a chance to more closely inspect the PM3 unit to see, but if I recall from looking the other day, it didn't appear to be leaking directly from the PM3.

well if I wasn't 6'4" it wouldn't be so bad...lol


Also with the TGP, I don't drive it in the winter, so either way I need a vehicle for the winter. That's another reason I considered that $400 one I saw the other day. I know I could fit them both in that since it had a bench back seat and not AQ9s.



Ok, so I do have brakes. But it kinda takes a couple seconds. When I press the brake pedal, it's really stiff to about halfway and it doesn't seem to apply too much pressure. Then after a couple seconds it's as if pressure builds up and the pedal softens up and will go down further. At that point the brakes feel normal.... until the next time I have to brake... rinse and repeat.


I can hear the pump when I press the brakes. Every time I press the brakes the red brake light on the dash comes on. When it goes off is about the time that I have "normal" feeling brakes after the couple seconds it's really stiff.


ABS light has pretty much flashed since I bought the car. But has never presented a problem until last year.

That would be awesome. I am really leaning towards accumulator. The pump does at least pump. Whether it works or not (enough pressure) is another story. I'm just F'd for money now, I have 3 trees I need to get cut down and just discovered I need a new septic tank last night and I need to buy another car in a few months cuz my wrangler won't support 2 car seats for kid #2 coming in September. I'm just so stressed and distraught right now it's not even funny.


I've emailed a couple sites that have the accumulator listed, but they say they don't have one. I was so close to buying a 92 Prix the other day for $400 just so I could drive a Prix again...lol All it needs, according to seller, is intake manifold gasket.

8 years later, I never thought I would want to get rid of this car. But with my ABS issue (most probably an accumulator which I have been unable to track down) and not being able to drive the car. Also I  really don't having the desire to butcher the car to swap to a non ABS system, I am thinking of selling. I love this car but it is so depressing to see it just sit in my garage and not be driven.


Also today on the way to work, I passed by a shop where I saw a white grand prix. As I look I see it doesn't have the traditional badge, but the sticker on the door. I nearly shit myself as I say, Richard Petty Edition??? So I turn around and look and sure enough it was. To make it even sweeter, a 5 speed! White with charcoal interior, HUD and 160k miles. I left my number because the shop owner said the owner would probably be selling it.


I would also hate for some toolbag 16 year old to get this car (RP edition) and just beat the shit out of it. If I don't end up getting the RP I will post the information about it, cuz I would love for (one of us...lol) to get it.

Sweet, what were the times? The guy on the left in the first video couldn't find his mark...lol

That's understandable. Good luck with the sale.


but 5... damn...I think I have only ever even seen 5 in real life including mine... :p

"some of my tgps"?? How many do you have?


Got any spare accumulators? can't hurt to ask...lol

ah yea. I just replied to your PM btw. I had a chip go bad on me before and it caused all sorts of issues. It may not have been the whole ECM, but just the chip. Either way, glad your car is working again! Wish mine was.  :icon_frown: