LH Power Window Switch(s) Diagnose
Thread Starter
Instructor
Joined: Dec 2006
Posts: 137
Likes: 0
LH Power Window Switch(s) Diagnose
Hi,
This is my 1st time post on how to diagnose my LH Power Window Switch(s). I am checking this with a OHM meter for continuity.
My RH window works but my LH works intermittently/not at all.
Thanks,
92WhiteVetteGuy
This is my 1st time post on how to diagnose my LH Power Window Switch(s). I am checking this with a OHM meter for continuity.
My RH window works but my LH works intermittently/not at all.
Thanks,
92WhiteVetteGuy
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
My 87 window switches have 5 wires for two single pole double throw switches. Ign off, you should see low resistance between the pink wire (power) and the brown wire in down position and between the pink wire and dark blue wire in the up position. You should see low resistance between either black wire and both the dark blue and brown wire with the window switch not activated. Wire color may be different on your 92.
Safety Car
Joined: Oct 2008
Posts: 4,689
Likes: 4
From: Yucaipa CA
change the window motor .... does it move a bit then stop and keep repeating this?
Thread Starter
Instructor
Joined: Dec 2006
Posts: 137
Likes: 0
Motor is Full of Corrosion
Hey Jeff,
Removed the Motor-Regulator and partially disassembled the motor. Lots of corrosion present. Are their brush sets/rebuild kits avaialble for these or can I only buy a new motor?
I appreciate the speedy reply.
Thanks,
92WhiteVetteGuy
Removed the Motor-Regulator and partially disassembled the motor. Lots of corrosion present. Are their brush sets/rebuild kits avaialble for these or can I only buy a new motor?
I appreciate the speedy reply.
Thanks,
92WhiteVetteGuy
Safety Car
Joined: Oct 2008
Posts: 4,689
Likes: 4
From: Yucaipa CA
Thread Starter
Instructor
Joined: Dec 2006
Posts: 137
Likes: 0
you can buy a cheap motor and put the new electrical parts on your old motors transmission and not have to drill out the rivets. It is easy to do! did this on my 90 and the motors work perfectly now.
[IMG]http://i186
.photobucket.com/albums/x300/jproz1167/1990%20corvette/doormotor2.jpg[/IMG]
[IMG]http://i186
.photobucket.com/albums/x300/jproz1167/1990%20corvette/doormotor2.jpg[/IMG]
Thanks for the amazingly fast reply with pics no less.
You made mention of a cheap motor you must mean aftermarket vs. OEM?
Thanks,
92WhiteVetteGuy
Safety Car
Joined: Oct 2008
Posts: 4,689
Likes: 4
From: Yucaipa CA
then when you get apart slip new brush holder over the new commutator and hold the brush holder while you spin the commutator back into the old transmission. Its pretty idiot proof the commutator will screw in so far and its in position when the regulator starts moving. when it does then press the brush holder/electrical connector back in place and bolt the cover back on.
If you motor has any slop there is a adjustment screw on the motor to fix that.
hope that helps
Safety Car
Joined: Oct 2008
Posts: 4,689
Likes: 4
From: Yucaipa CA
This is what my 1990 did, drivers worked perfectly the fsm says one of the last tests is pulling the electrical connector off the motor itself and see if power is being switched there. if it is replace motor.
basically you will see
blue positive
brown negative for say up and reversed for say down.
If it does none of that then fsm says replace switch .... also on my 90 unless the driver side switch is plugged in the passenger side will never work
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
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
