Thread: Just bought a 2004 Grand Prix Gtp Comp G but many problems..

Some guy said the car was overheating because of my water pump, but I did not trust him. Could this be true?

Originally Posted by Fivefingerdeathpunch

try bleeding the coolant system. It sounds like there is still a bunch of air in it and thats causing it to run hot.

As for fuel mileage, since the air filter and plugs and wires were done. I want you to try and clean the MAF with maf cleaner and I would prolly change the front o2 sensor.

Is there a way to know when you need to change the lower intake gasket?

Originally Posted by scottydoggs

are you losing coolant with out seeing a leak?

you may be due for a lower intake gasket, the shops in queens are going to rape you on that one.

Ok awesome, thanks so much.

Originally Posted by scottydoggs

yes air in the engine, the s/c oil needs changing like every 30,000 miles, or so heres a vid how to do it, YouTube - ‪HOW TO CHANGE THE SUPERCHARGER OIL ON A GM 3800 SERIES II V6‬‏ get new oil from a GM dealer only.

Thanks a lot for the info, it really helps.

Originally Posted by matt5112

yes.

There is a plug on the front of what we call the "snout" which is the part with the pulley on the end, that bolts into two other peices that make up the blower.

The fluid can be sucked out with a syringe and some tubing.

Then go to the dealer and ask for two bottles of supercharger fluid.

fill till its at the bottom of the threads of the plug. (make sure the car is level)

Gotta take the engine cover to see that though.

I'd suggest throwing out the engine cover. Just makes things hotter and decreases the life of everything.

If you're in a bind, Mobil 1 5W-30 is a GM approved temporary solution for southern states all year 'round or summer only in northern states.