wipers not working

Take the cover off the wiper motor and look at the board. The traces on the board get broke or interrupted.

I ran a strand of wire to recreate a trace on mine and solved the same issue you are having. Honestly the strand of wire is a bandaid fix and I don't expect it to last too long. When it fails agian I will just replace the enitre wiper motor.

oldtymehockey said:

Take the cover off the wiper motor and look at the board. The traces on the board get broke or interrupted.

I ran a strand of wire to recreate a trace on mine and solved the same issue you are having. Honestly the strand of wire is a bandaid fix and I don't expect it to last too long. When it fails agian I will just replace the enitre wiper motor.

Click to expand...

that board would be the wiper pulse module, that I said I swapped out between vans.
both boards work fine in my 90, neither works in the 93

DaveAstro said:

oldtymehockey said:

Take the cover off the wiper motor and look at the board. The traces on the board get broke or interrupted.

I ran a strand of wire to recreate a trace on mine and solved the same issue you are having. Honestly the strand of wire is a bandaid fix and I don't expect it to last too long. When it fails agian I will just replace the enitre wiper motor.

Click to expand...

that board would be the wiper pulse module, that I said I swapped out between vans.
both boards work fine in my 90, neither works in the 93

Click to expand...

This may sound a little crazy but give this a shot.
1. Crank the van
2. Turn wiper switch to high
3. Give the circuit board a good whack with a rubber mallat.

crashcx said:

This may sound a little crazy but give this a shot.
1. Crank the van
2. Turn wiper switch to high
3. Give the circuit board a good whack with a rubber mallat.

Click to expand...

your right! that does sound a little crazy, lol

I'm thinking there may be a short in the motor itself, going to get into it more tomorrow when I can work on it inside, away from the damn snow.

fast68 said:

if so then probably dead motor or fried board

Click to expand...

as I have said, it isn't the board.. I have two vans, both boards (wiper pulse modules) work in my other van, neither in the 93
no matter what board I put in, if I ground out the motor case the chassis, the wipers kick in regardless of what position the dash switch is, as long as the key is on.
following the diagnostics, the switch tested fine and the wiring between the switch and the motor seems ok. I am thinking there may be an internal short in the motor.
as soon as I get a warm dry day I will get into it further with the multi-meter and see what I can find out.

so, I fixed the wipers.
before my friend passed away, he was trying to say something about wires and colors.
apparently he either took the jack apart or it fell apart that goes into the wiper pulse module, the wires were all backwards.
fixed that, wipers are working!

Good find and fix!

Yeah, you're right, crash spelled mallet wrong,
don't want to confuse anyone. If you're in a rainstorm and the wipers quit this works on 9 out of 10 astro unless you have arbitrarily intermittent wipers like my '93. One day I'll pull the column apart and replace the switch.
maybe.

It really has been a "Good Old Thread Revisited Cuz' It's So Darned Good" week here lately.

Good Topics, Great Help and only 13 years "In The Wings". Reflowing has been a godsend to these Vans.

Too true Mike.
Speaking of reflow that i've never tried, I never put a board in the oven but have resoldered a time or two.
In the late nineties, 2000 I got into computer building / overclocking as a hobby. I used a trace pen as a quick fix on my '97. It made it through the week till I had time and a warm place to resolder.