Wiper control
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Senior User
Joined: Oct 2001
Posts: 116
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From: Florida
Wiper control
My wipers on my 87 F-350 are not working right in intermittent mode. I've just replaced the new dash switch and same problem. When I turn to intermittent, they cycle up then stop in the middle of the windshield. The only way to get them down is to turn the **** to low or high. Also - when you turn them off (from any position - low/high/intermittent) they will stop where they are - they don't go down to the correct position and then stop.
I've been reading some posts on this - sounds like the wiper control module or the stop/park switch in the motor (or both)??
Any ideas? Also - where is the wiper control module??
Thanks in advance for the help.
I've been reading some posts on this - sounds like the wiper control module or the stop/park switch in the motor (or both)??
Any ideas? Also - where is the wiper control module??
Thanks in advance for the help.
New User
Joined: Jan 2008
Posts: 0
Likes: 24
Wiper control
It is connected to the wiper switch inline with the wiring harness behind the instrument cluster.
Pull the cluster out and there it be.
Sometimes they screw the bracket of the module to the underside of the dash.
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Pull the cluster out and there it be.
Sometimes they screw the bracket of the module to the underside of the dash.
[font color=red]Dennis
FTE Assistant Administrator
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Posting Guru
Joined: Jan 2002
Posts: 1,346
Likes: 8
From: Baltimore
Wiper control
[updated:LAST EDITED ON 16-Nov-02 AT 05:52 PM (EST)]Open the wiper control module cover and look for a cracked/cold solder joint. I don't remember exactly, but on mine, there was a large diode or its heat sink where the solder joint cracked open. I used a large wattage soldering iron to reheat the joint and it cured my wiper problem.
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Wiper control
The only way the wipers can stop mid-sweep is if the park circuit inside the MOTOR is bad. The delay module won't do it. The fact that it happens in normal mode proves it. Don't worry about the switch, wiring, or delay module; concentrate on the motor.
Senior User
Joined: Sep 2002
Posts: 260
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From: prince george canada
Wiper control
[updated:LAST EDITED ON 17-Nov-02 AT 01:14 PM (EST)]In my 92 they will stop mid sweep but start again and then go a little ( like 2 inches) and then stop again and they will keep doin this they also do not return to rest position when the wipers are turned off what up with that? is it the same problem ?
1992 F250 r/c l/b 4X4 351 5spd
1992 F250 r/c l/b 4X4 351 5spd
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Wiper control
[updated:LAST EDITED ON 17-Nov-02 AT 02:44 PM (EST)]Crazy
Yes - same problem. Diagnose the motor's internal switch wiper or replace it.
Pat
I've never had a problem from any of those parts on my truck, and most of them are junkyard parts.
http://www.webphotos.com/list_photos.asp?mi=3&smi=1&a=13217
Yes - same problem. Diagnose the motor's internal switch wiper or replace it.
Pat
I've never had a problem from any of those parts on my truck, and most of them are junkyard parts.
http://www.webphotos.com/list_photos.asp?mi=3&smi=1&a=13217
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Thread Starter
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Senior User
Joined: Oct 2001
Posts: 116
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From: Florida
Wiper control
Thanks for all the responses - I'll take a quick look at the module then head for the motor. How hard is the motor to change? Is it done from the engine compartment or am I about to crawl under the dash?
Sorry for the delay - Just spent a week in Brazil - they've got some funny looking trucks down there!
Sorry for the delay - Just spent a week in Brazil - they've got some funny looking trucks down there!
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Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Wiper control
Just pop the hood. The hardest part will be removing the wiper operating rods from the bellcrank on the motor - there's a little clip on the end that you have to slip off before the rods will slide off. But sometimes, the rods' bushings sieze on the shaft. You might be able to pull the bellcrank off the motor's shaft, but that might make it difficult to realign it so the sweep is right. Pulling the wiper valance from in front of the windshield makes getting at the clip MUCH easier 
, but that's a WHOLE new bag of worms!
, but that's a WHOLE new bag of worms!