International Full Size Jeep Association
Home Forums Reader's Rigs Tech Library Trail Stories FSJ-List
International Full Size Jeep Association  

Go Back   International Full Size Jeep Association > Tire Kickin' > General FSJ Tech

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 07-05-2011, 09:24 AM
puckettj's Avatar
puckettj puckettj is offline
Member
 
Join Date: May 17, 2011
Location: Alpharetta, GA
Posts: 148
Short in Rear Window Switch or wiring?

I've read all the tech write-ups on rear window issues but haven't found my particular issue (At least I don't think I have). Have had the '89GW for about 2 months now. The rear window key switch worked fine when I got it. Dashboard switch worked too.

About 2 weeks ago the rear key switch would lower it or at least work for 3-10 seconds. At that point I couldn't get the window back up from that switch. Also, the power door locks, rear wiper and power seats stopped working. The dash switch continued to work without issue.

After a few minutes, everything begins working again. At least until you do the rear key switch again.

This weekend, all those things stopped working without the doing the key in the rear switch. I pulled the breaker/relay out of the fuse box and it was so hot, it burned the tip of my finger (Have blister to prove it).

Dashboard switch continues to work.

My gut is that there is a major short in the wiring somewhere in the tailgate, yes? Or could the rear key switch contain the short? Please let me know what I should be looking for...I don't want to take the whole thing apart if I don't have to

Thanks for any advice...
RP
Reply With Quote
  #2  
Old 07-05-2011, 09:52 AM
Tripwire's Avatar
Tripwire Tripwire is offline
hey,does anyone here know how to.......
 
Join Date: Jul 30, 2000
Location: WA State
Posts: 4,180
a ugly spot is the bend in the cable harness where it folds while opening and closing the tailgate - that would be a good place to start

you may have to cut open the plastic sheath covering the wires to inspect it.

IIRC the windows and all the malfunctioning other parts as well run to a fusable link on the starting relay it may be blown and ocasionally making contact
__________________
Abort? Retry? Ignore? >

86 GrandWag. Howell fuel Injected 360. MSD Ignition + Dizzy. 727/228 BJ's 2" Lift and 31's

88 Wrangler 4.2, Howell TBI and MSD - Borla Headers w/ Cat-back + winch and 31's AND a M416 trailer (-:
Reply With Quote
  #3  
Old 07-05-2011, 02:23 PM
puckettj's Avatar
puckettj puckettj is offline
Member
 
Join Date: May 17, 2011
Location: Alpharetta, GA
Posts: 148
Good info..thanks...
Reply With Quote
  #4  
Old 07-05-2011, 11:20 PM
Rich88's Avatar
Rich88 Rich88 is offline
FSJ Maniac
 
Join Date: Nov 20, 2008
Location: Wilds of Ellington, CT
Posts: 4,182
Quote:
Originally Posted by puckettj
I pulled the breaker/relay out of the fuse box and it was so hot, it burned the tip of my finger (Have blister to prove it).

The breaker works by excess current developing heat until a contact arm warps and automatically opens up the connection. After it cools down, the arm goes back and electrical contact is made again.

Since it only happens when you actuate the key switch, I'd say there's a short or very low resistance to ground at the key or after it, going to the window motor. And if the motor itself was shorting out, you'd have the same problem when using the front switch.

If the short were between the key and 12V wiring to the front then the breaker would have cycled open/shut until it finally gave up and opened for good or blew out a fusible link.
__________________
Jeepasaurus (Wagonus Grandi quadropedus)
88 GW 360-.030 over/2150/727/229/Posi, e-pump, AC (broke), tow package, Monroe Air Shocks, TFI, CTO-Free, AIR-free, oil & tranny coolers, dried knuckle blood all over, GM 350 TBI in a box, waiting...
"You're an FSJ'r when the parts guys memorize your name, phone & credit card#."
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rear Window wiring on 86 GW olllllo General FSJ Tech 2 12-11-2010 06:04 PM
Repairing the tailgate switch - You can do it too! Jeepster226 General FSJ Tech 8 08-29-2010 12:29 AM
Rear window key switch? Rider99XX General FSJ Tech 2 04-10-2009 06:04 PM
Since the rear window switch has now been discontinued... DieselSJ General FSJ Tech 9 03-10-2008 08:56 PM
rear window switch diagnosis..help. rickauf General FSJ Tech 0 04-16-2007 10:44 AM


All times are GMT -6. The time now is 01:43 PM.


Powered by vBulletin Version 3.5.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
corner corner