Power Window Is Slow And Weak
Thread Starter
Heel & Toe
Joined: Oct 2004
Posts: 22
Likes: 0
From: MOBILE AL
Power Window Is Slow And Weak
I Have A 75 And The Passenger Window Is Tired Some Times You Have To Open The Door To Get It To Go All The Way Up.
Do They Make A Roller Kit Or Something Like That To Improve The Power Of The Window Or Do I Need A New Motor
Do They Make A Roller Kit Or Something Like That To Improve The Power Of The Window Or Do I Need A New Motor
Racer
Joined: Jan 2003
Posts: 383
Likes: 0
From: Columbia SC
What you need is a new window regulator spring. when this breaks the power window motor has no help to bring the window up.
Suggest you take the door panel off and have a look, get a parts list going.
You will have to remove the regulator & motor so now is a good time to replace the rollers, clean out the tracks, re-grease, install and new spring, decide if you want to replace the motor or not.
Suggest you take the door panel off and have a look, get a parts list going.
You will have to remove the regulator & motor so now is a good time to replace the rollers, clean out the tracks, re-grease, install and new spring, decide if you want to replace the motor or not.
Racer
Joined: Feb 2000
Posts: 394
Likes: 0
From: Evans GA
Actually, "all" you probably need to do is re-grease everything, including the gear in the motor.
It takes a white lithium (sp?) grease. From a tub for the gear. Use the spray kind for the tracks.
While you are in there, grease up the door lock mechanisms.
It takes a white lithium (sp?) grease. From a tub for the gear. Use the spray kind for the tracks.
While you are in there, grease up the door lock mechanisms.
Drifting
Joined: Aug 2002
Posts: 1,731
Likes: 22
From: Marietta Ga.
Originally Posted by Gage
What years have a spring to help the window up? I don't recall seeing one on my 72?
It's coiled around the regulator and you have to put a bolt through it to keep it in place before you remove the motor from the regulator.
Jim, I had the same problem with my'72 and took every thing out of the door and cleaned up, put white lithuim grease on it and put it back, the result was a world of difference. They now go up and down very quick. I doubt the spring is the problem , unless it is in two parts or unwound. Follow the directions in a GM service manual for your year and you should have no problem. Although, be sure to mark the location of the tracks as currently bolted or you will spend a long time trying to realign the window.
PS: mine was so gummed up with dried grease that the plastic rollers didn't even turn when they went up or down, they were just dragged along.
Last edited by 72GACRZR; Nov 17, 2004 at 02:34 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Le Mans Master
Joined: Sep 2000
Posts: 5,635
Likes: 4
From: Orlando Floriduh
I Have fixed a few slow windows. The biggest problem I found is the big spring on the back of the regulator was rusty and bound up. I have never seen a broken one but I see how that could happen with an old binding spring. Cleaning and lubing the spring along with all the tracks really help.
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
Well, been ten years since I did that, clean them, BUT I never regreased...those are nylon rollers, and do not need grease to thicken/dry out again......original rollers too....
the spring is necessary also, but can be found in junkyards....
I recommend disassy, and soaking the tracks in a pan full of gasoline overnight before even trying cleaning them, that white grease they used dries like glue, and it's a bear to get sanitary clean again....hense the soaking...
GENE
the spring is necessary also, but can be found in junkyards....
I recommend disassy, and soaking the tracks in a pan full of gasoline overnight before even trying cleaning them, that white grease they used dries like glue, and it's a bear to get sanitary clean again....hense the soaking...
GENE
Team Owner
Joined: Jun 2004
Posts: 20,216
Likes: 4
From: Smile, it's just the internet.
Sounds like I've got another project... I just assumed they were always real slow and weak. FWIW, mine drop like a brick, but really chug on the way up...broken spring, I guess, from what was said above.
Team Owner
Joined: Mar 2002
Posts: 24,160
Likes: 78
On that note, how the heck do you get the regulator assembly out of there? I took my door panel off last night, and it didn't look easy. It looks like I can pull the tracks without much difficulty, and I saw the access panel behind the motor, but I don't see how in the hell to get that big arsed regulator out! I'm assuming I yank the tracks out, unscrew the glass from the regulator cross bar, and then ????? are you supposed to fold up the regulator and try to jimmy it out through the access panel? 
Drifting
Joined: Aug 2002
Posts: 1,731
Likes: 22
From: Marietta Ga.
Originally Posted by wcsinx
On that note, how the heck do you get the regulator assembly out of there? I took my door panel off last night, and it didn't look easy. It looks like I can pull the tracks without much difficulty, and I saw the access panel behind the motor, but I don't see how in the hell to get that big arsed regulator out! I'm assuming I yank the tracks out, unscrew the glass from the regulator cross bar, and then ????? are you supposed to fold up the regulator and try to jimmy it out through the access panel?
The service manual gives good instructions. To get the window out, I re pluged the power and ran it all the way up, Then after you get the tracks out, you will have to run the regulator again to close up the spread so you can work it out. It comes out with the motor still attached and then you will have to once again run it to get the hole for the holding bolt(keeps the spring from unwinding) lined up.
Really easy to follow instructions in the GM service manual. But don't forget to mark the location of the bolts and channels before you remove them or you will spend some time trying to get the glass readjusted to fit tight.
Team Owner
Joined: Mar 2002
Posts: 24,160
Likes: 78
Originally Posted by 72GACRZR
The service manual gives good instructions. To get the window out, I re pluged the power and ran it all the way up, Then after you get the tracks out, you will have to run the regulator again to close up the spread so you can work it out. It comes out with the motor still attached and then you will have to once again run it to get the hole for the holding bolt(keeps the spring from unwinding) lined up.
Really easy to follow instructions in the GM service manual. But don't forget to mark the location of the bolts and channels before you remove them or you will spend some time trying to get the glass readjusted to fit tight.
Really easy to follow instructions in the GM service manual. But don't forget to mark the location of the bolts and channels before you remove them or you will spend some time trying to get the glass readjusted to fit tight.
Burning Brakes
Joined: May 2003
Posts: 789
Likes: 0
From: Centerville Ga
Heres how I did mine & a few other projects too 
http://www.corvetteclubcentralga.org...embersproj.htm
http://www.corvetteclubcentralga.org...embersproj.htm
Burning Brakes
Joined: Mar 2004
Posts: 923
Likes: 4
From: Austin Tx
I took my pw motor out, greased up the gear housing, then sprayed lithium grease all over the tracks, wheels, reasssembled it...the window flys up strong, and goes down in about 1.5 seconds...I'm going to do the pass side tomorrow....