Well the title says it. 87 f250 is the truck. I popped off the motor cover and clean the contacts and also bent down the little tabs to apply more pressure. That didn't work. I plugged in a new motor and it still does the same thing. Ideas? Which wire should have power all the time for the park and intermittent? Thanks.

 

I think its your switch. though I thought 87 didnt have intermittent?

Anyways my brother had similar issues and it was the switch

 

Yep its an 87 and it sure does have it. It worked at one time.

 

its most likely the switch itself, thats what happened to my brother. he said it was hard to find but you may have good luck. check a local dealer.

 

Wipers will come up like 1/4 of the way and stop when I turn on intermittent.

 

most likely the wiper delay control box, not the switch. as they age the circuit board develops cracks and then the wipers do all kinds of funky moves.

 

Where's that? They don't park either.

 

on my 88 it was mounted to the dash about 6 inches from the switch. follow the wires front the switch. the box is about 2 inches square.

 

Have you tried doing what is detailed in this tech writeup?

https://www.ford-trucks.com/forums/5...-cost-fix.html

 

Yes I noted that I had done that in my first post.

 

I had problems with my wiper control box twice on my '87. You will find it's tight getting it out.

What happened on mine is the jar the dash receives when the parking brake is released causes the soldered circuits to break loose. I re-soldered mine each time and fixed the problem with the wipers.

I fixed the jarring problem during the second solder job. I wrapped the control box with foam, then just laid it up behind the dash area on top of some other wires. No more problems for many years now.

 

Ok where's this dude at. Looks like a little box sorta above and right of accelerator pedal.

 

follow the wires from the switch. the delay module will be in the line about 6-8 inches away from the switch attached to the metal frame of the dash.

 

*Plays horn sound from "The Price Is Right"*
Well then, I am the official idiot of this thread. Not sure how I missed that.

 

Lol I'm bad to skim over and not read close.
Thanks tjc I'll pull the plastic on the dash and follow it. I've got to pull it and make a place for my mech oil pressure gauge anyway on the right where the wait to start and fuelfilter light is on the diesels.