Mechanics

QUESTION ON POWER WINDOW FOR LE 3.1

1992 Pontiac Grand Prix • 80,000 miles

Hello, I'm having a problem with my 1992 Grand Prix LE passenger front power window. I seem to remember that if someone closed the window too high in the past (kept their finger on the up button once the window was closed), it would bind up and the window wouldn't work afterwards. To clear this, you could usually go over railroad tracks (or bumpy road) with a finger on the down button and the drivers window would start working fine until it happened again - my son used to do that when he drove the car until I got it into his head what was going on. That trick isn't working to open this window - passenger front.

I've checked voltage at the motor and do have 12v on the blue wire when depressing the switch but haven't tried grounding the other wire (brown) yet as I've looked for a wiring diagram. I'm not anxious to drill out the rivets to replace the motor but I guess if it comes to that.

In the meantime, how might I check the window 'regulator'? I don't know much about how these regulators interact with the motor and am anxious to learn more. I'm trying to get this car going again after a couple of years in storage as it waited for my daughter to turn 16. Thanks for any help.
Avatar
Coverland
October 13, 2012.




Yes, procedure is from our database courtesy of GM. Try the smallest size avalable, it should be sufficnet to hold the arm.


KHLow2008
Oct 20, 2012.
[quote]2. Drill hole through regulator sector gear and backplate. Do not drill hole closer than
1/2" (13 mm) to edge of sector gear or backplate. [/Quote]

I'm going to do this tomorrow but am still a little unclear on locking the spring (the one that allegedly can come unwound and cause personal harm) so have attached a picture. Is the yellow boxed gear the "sector gear" in #2 of instructions? For the life of me, I can't locate or determine what else they may be talking about. TIA for any help.
AD


Tiny
Coverland
Oct 21, 2012.
Yes, that is the gear. I have drawn 2 red circles in the diagram. Any of these point should be good to hold the gear in position.
The idea is to prevent the arms from moving to release the spring.


KHLow2008
Oct 21, 2012.
Got the regulator and motor out - wow, those rivets were a challenge (since they were stubs hanging out and I couldn't get to the back side to drill the rivet).

I have a bit of a challenge too in one of the rivets being partially covered - you can see it in the large red boxed area of the attached picture. Also, it looks like a good spot to drill and bolt where I have the small box so the spring doesn't release. Thoughts?


Tiny
Coverland
Oct 21, 2012.
SUCCESS. Used a grinding wheel to nip off the corner to expose the third rivet in the box and got the motor changed and window works fine again - thanks for all your help. While I have your ear on this year and model, do you guys happen to know if the transmission is sealed at the factory with no way to check or change the fluid? I had it serviced at Walmart recently and they told me it was a sealed unit with no way to check it. Thanks again for all your help.


Tiny
Coverland
Oct 22, 2012.
Sorry for the delay in replying. Our notification system went bonkers and has since been restored.

Glad to know you have resolved the problem.

The information from our database indicates that you can check the transmission fluid level via a dipstick. I could not find the location nora any diagrams but if you look around the side of transmission, you should be able to locate it.


KHLow2008
Oct 23, 2012.
Thanks KHLow2008. This '92 Pontiac 3.1 sat a couple of years as we waited for our daughters to reach driving age. It used to be the easiest and nicest starting car we had and started great in any weather.

As we were bringing it out of retirement, we had to have the fuel pump and filter replaced to get it runnable again. Anyway, now it's a hard starter. It cranks fine, just takes numerous pumps of the accelerator pedal (8 or 10) before turning the key to start it to make it a successful start.

Think just gum-out in the gas mixed with a couple of tanks of gas run through it will resolve this issue. It ran great going into storage. TIA


Tiny
Coverland
Oct 28, 2012.
If the gas is stale, you ought to have it replaced. Check the fuel pressure. If the fuel pump hose was not installed correctly during installation, it could result in pressure loss and difficult starting.


KHLow2008
Oct 30, 2012.

AD