power windows on mk3 supra (89)

aaronced · 09-12-2009, 04:41 PM

hi. i have a 1989 supra, and it has p/w of course. the driver side works, but the passenger doesnt work. i hear that's typical of mk3 supras.
its obviously not the fuse, the 'Gauge" fuse operate the p/w as well, and the driver side works, doesnt work if the fuse isnt in.

im not sure if its a relay, or if i have to play with the circuit breaker.

can someone help me?
thanks.
aaron.

BestSupra87 · 11-24-2009, 04:45 PM

I have the same problem with my 87. Tried connecting the battery directly to the pasenger window motor and was able to make window go up and down. So I figured the motor and regulator were fine. Must be electrical.

Read a couple posts here and looks ike it is probably the main power switch driver side. Wierd cause the driver window works fine. Still have not pulled it out, tho I heard they are hard to fix and you have to try buying a used/new one.

HTH

CanadianBak'inSupra · 11-25-2009, 01:43 PM

had a similar problem, my drivers side had no control over passanger side, and then i changed the switch, and then i got full control over passanger side for about 2-3 weeks, now i can only make it go down from my side...
good thing i dont gotta ride bitch...

cre · 11-25-2009, 10:41 PM

The contacts inside of the switches get built up with carbon and after a while it becomes excessive. If you are somewhat mechanically inclined you can take the switches apart and clean the contacts with some fine sandpaper or a green scouring pad.... it's not a difficult operation; I did my master window switch last week.

I had to clean the contacts on my master switch a couple years ago too... I'm sure it didn't need so much attention when the cars were newer; The fact that this occurs more frequently now that they are older has me stumped. At least it isn't a difficult project and once you've done it one time it's quick and easy thereafter.

09-12-2009, 04:41 PM	#1
aaronced Stock Join Date: Sep 2009 Location: sa town Posts: 2	power windows on mk3 supra (89) hi. i have a 1989 supra, and it has p/w of course. the driver side works, but the passenger doesnt work. i hear that's typical of mk3 supras. its obviously not the fuse, the 'Gauge" fuse operate the p/w as well, and the driver side works, doesnt work if the fuse isnt in. im not sure if its a relay, or if i have to play with the circuit breaker. can someone help me? thanks. aaron.

11-24-2009, 04:45 PM	#2
BestSupra87 Stock Join Date: Nov 2009 Location: Califoria Posts: 2	Passenger side window problem I have the same problem with my 87. Tried connecting the battery directly to the pasenger window motor and was able to make window go up and down. So I figured the motor and regulator were fine. Must be electrical. Read a couple posts here and looks ike it is probably the main power switch driver side. Wierd cause the driver window works fine. Still have not pulled it out, tho I heard they are hard to fix and you have to try buying a used/new one. HTH

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11-25-2009, 01:43 PM	#3
CanadianBak'inSupra Official hall monitor / search nazi - NO SOUP FOR YOU! Join Date: Oct 2009 Location: Canada, BC Posts: 837	had a similar problem, my drivers side had no control over passanger side, and then i changed the switch, and then i got full control over passanger side for about 2-3 weeks, now i can only make it go down from my side... good thing i dont gotta ride bitch...

11-25-2009, 10:41 PM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The contacts inside of the switches get built up with carbon and after a while it becomes excessive. If you are somewhat mechanically inclined you can take the switches apart and clean the contacts with some fine sandpaper or a green scouring pad.... it's not a difficult operation; I did my master window switch last week. I had to clean the contacts on my master switch a couple years ago too... I'm sure it didn't need so much attention when the cars were newer; The fact that this occurs more frequently now that they are older has me stumped. At least it isn't a difficult project and once you've done it one time it's quick and easy thereafter.