I just replaced my rear wiper motor and windshield pump on my 99 sport, they worked great for a few hours, and now they won't turn off . . . so far my temporary solution has been unplugging the rear wiper switch and they both stay (and when I need them i just plug them it back in, if my neck was any redder I would leave it that way). First time diving into to some electrical stuff like this, any body have any experience with this or ideas on where to start?

I should also note that as this start my open door light have been constatnly going on, I suspect from the rear gate.

 

you sure you got the right wiper motor? and is it wired up correctly?

 

Yes, the rear motor is the correct motor. Also without the motor plugged in the pump still runs.

 

maybe take a look at the rear wiper switch? maybe its shorting out internally?

 

x2 I'd replace the switch.


PS: I started cracking up when i saw the title to this thread.

Hope you get it solved

 

A new switch was the first thing I tried, and it was going. When I ran a test light the black and white (which is what runs when the switch is in the wash position) wire was getting power even though the (new)switch was in the off position!

 

Did u figure this out? Mine is doing the same thing rear wiper and washer stays on when I pull 22 fuse it stops I just replaced the switch in the dash and thing still stays on 😡 what can be wrong?

 

On my 98 cherokee the fuse kept blowing - I thought it may be a bad motor - my wise mechanic traced it to the wire harness as it comes through the hatch lid was shorting out - against the body...so he spliced the wire and it worked great.

I would recommend looking at that before tearing into motors and switches

 

Short.

 

.

 

x3 a wiring short somewhere, just having to run it down may take a little time.

 

I hate to dig up an old thread.... But has anyone figured this out, or had similar issues? While wheeling last night my rear wiper started running and my rear washer fluid turned on and would stop, the pump would not shut off. I also noticed my "rear hatch open" light was turning on and off intermittently, and would at times be dim, then bright again.

Any help or suggestions would be greatly appreciated. I pulled the fuse for now which has worked.

 

Top of the lift gate, when open has wires in it that are constantly bending and straightening and vibrating. They wear out. Good place to look. Don't cut the rubber, pull it aside by using 2 screwdrivers to pry.

 

There's a good chance you won't need a wiring diagram when you find a broken one or one that's rubbed down to copper. Just fix those and try it again.

 

Thanks for the info. That was one of the first places I was going to look tomorrow. Ive looked at the rubber boots that the wires pass through and if I recall they didnt appear to be in that great of shape.