Rear Window: Down only after Up

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Topic author
GrandW
Posts: 224
Joined: Mon Aug 20, 2018 6:19 pm

Rear Window: Down only after Up

Post 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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1987 Jeep Grand Wagoneer

SJTD
Posts: 1924
Joined: Tue May 21, 2013 12:02 pm
Location: Lompoc, Sunland or somewhere between

Re: Rear Window: Down only after Up

Post 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?
Sic friatur crustulum

'84 GW with Nissan SD33T, early Chev NV4500, 300, narrowed Ford reverse 44, narrowed Ford 60, SOA/reversed shackle in fornt, lowered mount/flipped shackle in rear.

Topic author
GrandW
Posts: 224
Joined: Mon Aug 20, 2018 6:19 pm

Re: Rear Window: Down only after Up

Post 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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1987 Jeep Grand Wagoneer

RamJetFSJ
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Joined: Fri Mar 22, 2013 12:36 pm
Location: Carpinteria, CA

Re: Rear Window: Down only after Up

Post by RamJetFSJ »

Switch probably needs cleaning/refurbishing.
80 Wag in 73 attire, Ram Jet 350 power

candymancan
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Joined: Tue Mar 22, 2016 11:32 pm

Re: Rear Window: Down only after Up

Post 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
1998 Jeep Grand Cherokee 5.9L Limited 219k
1998 Jeep Grand Cherokee 4.0 I6 laredo 430k
1990 Jeep Grand Wagoneer 155k
1976 Jeep J10.. 85k(repaired)

Topic author
GrandW
Posts: 224
Joined: Mon Aug 20, 2018 6:19 pm

Re: Rear Window: Down only after Up

Post 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!
1987 Jeep Grand Wagoneer
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lkmarsh
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Joined: Mon Jun 11, 2012 8:35 pm
Location: Modesto CA

Re: Rear Window: Down only after Up

Post 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.
Lyle
69 1414x Buick350/Th400/D20
PDB, HEI, relays, rallyes, rhino, rust...
73 Wagoneer parts donor
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