3 Speed Wipers

[Rifleshooter]

I have a 3 speed wiper motor on my 80 Volare and for some odd reason it only works as On fast, or Off

 

[Justwondering]

Dang it... I hate it when that happens..
I just had new wiper blades put on the chrysler and it will now stop raining til the fall.

From this thread: An Error Has Occurred!

quote:
Here you go.

Bench testing procedure.


Test #1(Hi speed)


Connect jumper wire from motor case to battery ground.
Connect second jumper wire from battery positive to BROWN lead.
Motor should run hi speed continuously.


Test #2 (Lo speed)


Connect jumper wire from motor case to battery ground.
Connect jumper wire from GREEN wire to battery ground.
Join BROWN and RED wires together and connect a jumper wire from battery positive to them.
Motor should run at slower speed.


Test #3 (Park)


Connect jumper wire from motor case to battery ground.
Connect jumper lead from GREEN to BROWN wire.
Connect jumper wire from red wire to ground.
Connect jumper wire from Blue wire to battery positive.
Motor should reverse and park.


(Depending on where the motor had stopped the park feature may have a full rotation or very short rotation

Endquote

Which would lead me to believe the RED wire is the problem.
Have you checked the power from each of the wires with an multi-meter?

 

[Rifleshooter]

I currently have the blue wire cut on acount of that wire was shorting out on my old motor before I got fried, I connected it on the new motor when I installed it and it didn't run at all

 

[Justwondering]

Someone will chime in that has more expertise with the wiper motor.
Are you sure your ground is good? You might need to clean where it attaches on each end. Engine grime accumulates quickly.

 

[Aspen500]

In MOST cases, a wiper motor that runs only on high is a problem with the wiper motor itself. Do they park or just stop wherever the switch is turned off? That's also the motor.
One other question. Does the wiper switch have 3 different positions (OFF, low, med, high)? Only reason I ask is I thought 3 speed wipers weren't available on F-body after '77.

 

[Rifleshooter]

It's an intermitten wiper switch and with the blue wire disconnected it only work as on, which is fast, or off. There is no park as it is right now, and it can't be the motor due to the fact that this is the second motor in a row with the same issue.

 

[BudW]

I don’t have a 1980 FSM (Factory Service Manual) – but I do have a 1977 and 1986 available to me at work. The under dash part “should be” the same as your ’80 and the under hood part should be the same as the ’77 FSM.

’86 FSM Wiper pages, first:

 

[BudW]

’77 FSM wiper pages:

 

[BudW]

And last page

 

[Justwondering]

Yep... what he said ... lol

 

[Rifleshooter]

Is there a way to bench test the intermittent wiper control module? I looked under my dash and followed as many wires from wiper switch as I could find and they all went to proper places

 

[BudW]

Is there a way to bench test the intermittent wiper control module?

I’ve not heard of a bench test for one.

There are four things that go wrong with intermittent wipers: wiper switch, wiper motor, intermittent wiper module and wiring harness.

The harness is the least likely suspect.
The switch and motor are the most likely suspects.

Generally the test procedures get you to test the wiring harness and switch (at same time) and motor. If both test OK – then generally the module is what’s left.
BudW

Note: It does help to have “known good” parts available, to test with . . .

 

[Rifleshooter]

The wiper switch and wiper motor are ew and fully functional, so I guess that would leave the remaining 2