Power Windows Runnning Slow/Sluggish
Thread Starter
Advanced
Joined: Aug 2009
Posts: 65
Likes: 0
From: Rio Rancho NM
Power Windows Runnning Slow/Sluggish
Hey there, so I wanted to get some dialogue going on my sluggish window issue as well.
I have put a new motor on the passenger side with no difference in performance. o I didn't other changing the driver side motor at that point. I have removed and cleaned all the window crank assemblies and greased them as well...no improvement. I am wondering if the power window relay could be causing this. The pass and driver side both work from the switch but are very slow and weak.
This is on a 1977 late design.
I welcome all thoughts of wisdom
.
I have put a new motor on the passenger side with no difference in performance. o I didn't other changing the driver side motor at that point. I have removed and cleaned all the window crank assemblies and greased them as well...no improvement. I am wondering if the power window relay could be causing this. The pass and driver side both work from the switch but are very slow and weak.
This is on a 1977 late design.
I welcome all thoughts of wisdom
.
Melting Slicks
Joined: Jul 2009
Posts: 2,091
Likes: 40
I have heard the assist spring in the regulator gets weak , this spring helps the motor lift the window.
Also.....I have taken pwr window motor apart , cleaned the brushes and commutator ....this has helped....got the old hard grease out ...relube ....might help and might not
I suspect the regulator spring ......see what others say
Tell us what you wind up doing.
Also.....I have taken pwr window motor apart , cleaned the brushes and commutator ....this has helped....got the old hard grease out ...relube ....might help and might not
I suspect the regulator spring ......see what others say
Tell us what you wind up doing.
Advanced
Joined: Sep 2012
Posts: 56
Likes: 30
Slow window motors
I had the same problem when installed new motors.
Tried new relay and new switchers.
Still very slow.
It turned out to be a weak battery.
I installed a new battery and now they are fast beyond expectations!
Tom.
Tried new relay and new switchers.
Still very slow.
It turned out to be a weak battery.
I installed a new battery and now they are fast beyond expectations!
Tom.
Thread Starter
Advanced
Joined: Aug 2009
Posts: 65
Likes: 0
From: Rio Rancho NM
I have heard the assist spring in the regulator gets weak , this spring helps the motor lift the window.
Also.....I have taken pwr window motor apart , cleaned the brushes and commutator ....this has helped....got the old hard grease out ...relube ....might help and might not
I suspect the regulator spring ......see what others say
Tell us what you wind up doing.
Also.....I have taken pwr window motor apart , cleaned the brushes and commutator ....this has helped....got the old hard grease out ...relube ....might help and might not
I suspect the regulator spring ......see what others say
Tell us what you wind up doing.
Thread Starter
Advanced
Joined: Aug 2009
Posts: 65
Likes: 0
From: Rio Rancho NM
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
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
Thread Starter
Advanced
Joined: Aug 2009
Posts: 65
Likes: 0
From: Rio Rancho NM
Power Windows Runnning Slow
I have heard the assist spring in the regulator gets weak , this spring helps the motor lift the window.
Also.....I have taken pwr window motor apart , cleaned the brushes and commutator ....this has helped....got the old hard grease out ...relube ....might help and might not
I suspect the regulator spring ......see what others say
Tell us what you wind up doing.
Also.....I have taken pwr window motor apart , cleaned the brushes and commutator ....this has helped....got the old hard grease out ...relube ....might help and might not
I suspect the regulator spring ......see what others say
Tell us what you wind up doing.
So I have taken the power window motor apart, cleaned and lubed the guts...but you mention "the brushes and commutator"...I'm not familiar with the names, are these part of the window motor guts(my lay terminology)??? Like I mentioned, I replaced the pass motor with a new one and saw nooo difference between my original power window motor performance and the new one.
Both windows go up and down very slow and weak....I almost have to help them up. and forget about it if the doors are closed and the glass starts to reached the seals....for
get it!!!!So can you be more specific about the "assist spring in the regulator"? Is it about 3-4" in diameter and it wound up in the motor assy???
Last edited by ezrider01; Feb 14, 2015 at 11:48 AM.
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,171
From: Hermosa
So I have taken the power window motor apart, cleaned and lubed the guts...but you mention "the brushes and commutator"...I'm not familiar with the names, are these part of the window motor guts(my lay terminology)??? Like I mentioned, I replaced the pass motor with a new one and saw nooo difference between my original power window motor performance and the new one.
Both windows go up and down very slow and weak....I almost have to help them up. and forget about it if the doors are closed and the glass starts to reached the seals....forget it!!!!
So can you be more specific about the "assist spring in the regulator"? Is it about 3-4" in diameter and it wound up in the motor assy???
Both windows go up and down very slow and weak....I almost have to help them up. and forget about it if the doors are closed and the glass starts to reached the seals....for
get it!!!!So can you be more specific about the "assist spring in the regulator"? Is it about 3-4" in diameter and it wound up in the motor assy???
Racer
Joined: Aug 2014
Posts: 448
Likes: 42
I don't have power windows, however it was very hard to turn the handle to lower and raise the windows. I took apart the door and lubed up the entire window mechanism thoroughly. What a difference that made. Can now raise and lower the windows with just the fingertips on the crank. Try that.
Melting Slicks
Joined: Dec 2009
Posts: 3,233
Likes: 657
From: Thunder Bay
I had the same problem with my '79 a couple of years ago, so I bought a new motor and regulator for the driver's side. I don't remember the details but I do recall there were two separate parts to the motor - the motor itself and an attached gearbox. I found the grease in the gearbox was like glue. My solution was to clean out the old grease and re-lube the gearbox. I also removed the entire window mechanism and cleaned out the old grease, and relubed it. When I was done, the window was unbelievably fast. I still have to do the passenger side, but I've been putting it off because the whole job was no fun! FWIW
Thread Starter
Advanced
Joined: Aug 2009
Posts: 65
Likes: 0
From: Rio Rancho NM
Update 2
So I have replaced the relay and it made no real difference.
I have both regulators and two new motors (not rebuilt) coming today hopefully, just decided to go new. I have cleaned and relubed tracks and mech with no real good results.
I will however apply direct power to the current motors as REELAV8R suggusts to see if it makes a difference before changing them out.
Will update with that progress. Laterz
I have both regulators and two new motors (not rebuilt) coming today hopefully, just decided to go new. I have cleaned and relubed tracks and mech with no real good results.
I will however apply direct power to the current motors as REELAV8R suggusts to see if it makes a difference before changing them out.
Will update with that progress. Laterz
Burning Brakes
Joined: May 2013
Posts: 789
Likes: 129
From: Los Banos CA
I just got my 79 windows back together last night after replacing the regulators. I went back and forth as to replace regulators, motors or both. Decided to try regulators first - HUGE difference. Windows go up much faster now, even with the old motors (previously, I would have to 'help' pull them up with my hands). I also cleaned and re-lubed the channels, and replaced the roller on the windows. Both of my assist springs looked good (weren't broken), but obviously they had lost some of their 'spring'.
Since you already have the motors, it's probably easier to just replace both though. The bolts holding the motor to the regulator are 'hidden' when installed in the door, so it's just a little harder to get to them after it's all installed.
And in case you haven't already figured it out, the assist spring is a coiled spring (coiled like a snake) that is attached to the regulator (not the motor). Here is a link to one that Willcox sells, but your new regulators will already have this spring installed: http://willcoxcorvette.com/product_i...ducts_id=25864
Since you already have the motors, it's probably easier to just replace both though. The bolts holding the motor to the regulator are 'hidden' when installed in the door, so it's just a little harder to get to them after it's all installed.
And in case you haven't already figured it out, the assist spring is a coiled spring (coiled like a snake) that is attached to the regulator (not the motor). Here is a link to one that Willcox sells, but your new regulators will already have this spring installed: http://willcoxcorvette.com/product_i...ducts_id=25864
Racer
Joined: Sep 2013
Posts: 361
Likes: 6
From: Jamestown Ohio
I'll be sure to follow your progress on this, my driver side window was kinda like that so I lubed al the tracks and it seemed to work fine then stopped moving completely . It used to work only with the door partially open..?... now not at all.
