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Rear Window: Down only after Up

Posted: Thu Jul 04, 2019 2:30 pm
by GrandW
Okay... could use some collective wisdom. Rear window on the 87 Grand Wagoneer goes up with ease, and only down immediately after pressing up via the switch. Hard wired, it goes up and down without issue. Thoughts as to the solution?

Ground looks good. Any ideas are appreciated ImageImageImage

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Re: Rear Window: Down only after Up

Posted: Thu Jul 04, 2019 3:37 pm
by SJTD
You are saying if the switch is centered and you move it to down nothing happens but it you move it to up then to down it works?

What happens with the key switch?

Re: Rear Window: Down only after Up

Posted: Thu Jul 04, 2019 3:47 pm
by GrandW
SJTD wrote:You are saying if the switch is centered and you move it to down nothing happens but it you move it to up then to down it works?

What happens with the key switch?
Yes, that's right. I can hear it click / make a noise, but nothing happens. Flip it up, and then immediately down and it goes.

Currently the key switch is uninstalled as I removed it to repaint the vehicle (all the siding had to be removed too).

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Re: Rear Window: Down only after Up

Posted: Thu Jul 04, 2019 7:08 pm
by RamJetFSJ
Switch probably needs cleaning/refurbishing.

Re: Rear Window: Down only after Up

Posted: Fri Jul 05, 2019 4:20 pm
by candymancan
Probly need a new switch. And also with the door switch removed that would probly cause issues too.. as the window switch on the dash goes through the switch on the door itself.

If the door switch is bad the switch on the dash may not even work at all

Re: Rear Window: Down only after Up

Posted: Fri Jul 05, 2019 7:13 pm
by GrandW
Thanks for the replies. I'll see if I can clean the switch.

The switch definitely doesn't work when the tailgate is open / down. There's a sensor on the driver side, if it's not engaged it cuts the power. I'll double check those too. Thanks!

Re: Rear Window: Down only after Up

Posted: Fri Jul 05, 2019 9:09 pm
by lkmarsh
About that little safety switch: Myself and many others have bypassed that. Tearing apart your tailgate from inside to eventually find
that switch is the problem will make you a believer. It would be good to know if your window motor is a two- or three-wire motor.
Makes a difference in how the switches are wired and how you go about rewiring for relays, if you choose.