Older Grand Prix Maintenance and Repair (1999 and earlier)

in Pontiac
Hi,
I'm new here but am hoping to find help with a problem... the window in the rear passenger side door started falling down about 2-3" by itself. Also the switches don't seem to work, not the main panel rocker on the drivers door for that window, or the switch on the rear passenger door itself.
All other window switches work fine and other windows move up and down as usual.
We can push it back up into place, but it falls again once we drive a few miles...
I have had to replace the drivers side window works before [motor, rails & cable setup] but it never fell on its own ;-)
Any and all help is appreciated.
Thanks
I'm new here but am hoping to find help with a problem... the window in the rear passenger side door started falling down about 2-3" by itself. Also the switches don't seem to work, not the main panel rocker on the drivers door for that window, or the switch on the rear passenger door itself.
All other window switches work fine and other windows move up and down as usual.
We can push it back up into place, but it falls again once we drive a few miles...
I have had to replace the drivers side window works before [motor, rails & cable setup] but it never fell on its own ;-)
Any and all help is appreciated.
Thanks
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nitstud have you found out the problem
Thanks you
Coincidently, after replacing both LH/RH door handles (the RH was broke), now I have the same problem with the passenger side!
My Cars cooling fan for the engine will not turn on, it should turn on when it reaches 200*f but it is turning on when the meter hits 250*f and it is to late.
I have already replaced the fan and the censer, but the fan still wont turn on until the meter reads 250. What could the problem be?
Anyone else face these problems?!
I have recently bought a 1998 Pontiac Grand Prix SE 3.1 for $600.
When I purchased it, it had the Low Coolant light on, and check engine light on.
I knew right off the go what the coolant light was. Damage to the intake manifold gasket due to the DexCool that was in the cooling system. I had that replaced. The Low Coolant light is still blinking, I'm thinking it is a bad sensor because I had also just replaced the radiator cap and upper hose, no further leaks are found in a pressure test. Oil was changed when intake was replaced as to get out all the coolant/water from the engine oil. This is not my main problem.
The main problem is the car has a somewhat of a rough idle. More now than before.When you start the car (It starts fine by the way) the RPMs fluctuate from 500 RPM - 1000 RPM. It doesn't die out, but sounds sluggish. It is fine while moving, and when it slows back down to idle, it fluctuates only minorly.
The Check Engine light I am getting is for a Camshaft Positioning Sensor.
I know where it is, and how to change it. But, would this be the reason of why it is acting so strangely?
I am in the process of replacing the head gaskets on mine but dont know the head bolt torque settings, can you help?
Also, note the 94 model year is pre-DexCool, which means it takes the old green colored antifreeze (not the pink stuff).
As for price, my guess would be about $500 (parts and labor). You need to find a reputable repair shop and not just shop on price alone. For example, the engine surfaces must be cleaned properly otherwise the leak will develop again in a short time.
I recently purchased a 1994 Grand Prix (August 2011) with 125k miles. Engine is peppy and gas mileage is quite good for this vintage of vehicle. With the exception of the gasket problems, GM's V6 OHV engines are quite reliable and can go for 200 to 300k miles with just regular maintenance. Good luck.
As far as coolant getting in the oil goes. Yes it CAN cause serious damage but as long as the engine is not locked up chances are good it didn't hurt it to bad if it is present. Just make sure to change oil before start and again after about 1000 miles to flush all that coolant out.
I looked into just the parts only and I can do it myself for about $50 bucks. I can order an entire gasket kit for $161. So if you are knowledgeable or know someone who is and can help you with the repair, then that’s your better option! I plan on tackling it with a buddy who has some experience in the subject matter. In the end, if nothing else arises, I will end up putting no more than $300 in to the repair, plus my time. I say $300 because I need a new battery and want to do some cosmetic work. Compared to $1,600 I’d take my chances and learn something new in the process.