Wipers wont park when lever is put in park/off position.

[87gtVIC]

Thanks Thain. I have to wait till it gets warmer and then I will unwrap the wiring around the wiper motor. My dad replaced it with the newer one plug style when he last replaced the motor so it is not so easy figuring out what wires is what when this new plug was tapped in.


And yes the wipers are stopping just above the bottom of the windshield. Unfortunately I do not have a Shop manual to preform the "parking test-depressed park" Do you happen to know what that entails?


oh and Thain..No need to scan anything for me. Thanks

[gadget73]

What I posted above is the test according to my shop manual. It pretty much says check for voltage where it ought to be, and either fix the voltage problem or replace the motor (it actually says to replace the switch in the motor, but thats not really an option anymore). The interval governor assembly isn't part of the parking system, thats purely within the moto, though the switches and wiring is slightly different with interval vs non-interval.

[87gtVIC]

Okay. Then I still have to decode everything before I progress.

The new motor had the same symptoms so I doubt it is a motor problem, but one never knows.

I probably just jostled some old wire connections while futzing around with things during the fuse box install. (I ran the triggered ground for the horn in a loom near the wiper motor harness).

And I do have an interval wiper set up.

Just funky that everything works except park...and the new re-manufactured motor displays the same problems.

Thanks again!

[87gtVIC]

Still way to cold to touch any of the wiring, so I'd like to brain storm a bit.

During my fuse box install I messed with my horns, my washer fluid components as well as some little harness thing that is pictured below.

For the horns I just cut the power wire coming from the interior fuse box and put electrical tape over it. The triggered ground from the horn pad et all was re routed to my under hood fuse box, and the way the horns received power was reversed. (originally the d. side horn received power and transferred it to the p. side horn).

For my washer fluid components I just chopped off the low fluid sensor harness...but re soldered the power for the washer pump to the washer pump harness.

Here is the other harness I messed with:



There were six wires heading into the connector. On the other side of the connector only three wire came out. Of those three two were just looped and the other one was leading to my voltage regulator (the charge indicator light). I chopped that harness off extended the charge indicator light wire to allow myself to hide it in some loom, and then just connected the two that were originally looped on the other side of the connector. The other I wrapped individually in electrical tape. I have no clue what any of them were for other than the one charge indicator light. Anyone know what that connector was for, and does anyone see any faults in my work?

[87gtVIC]

Here are the symptoms once again:

-Wiper will not park.

-Wiper works in wash, intermittent, low and high speeds.

When wiper switch (on column) is put into park the wipers stop about two inches above the park position and do not move from there, the wiper interval governor makes a buzzing sound BUT the washer function still works (wipers go up and down to wipe away the fluid) but goes back to two inches above the park position and sounds the interval governor and remains there.

Basically the governor makes a buzzing noise when the lever is put into park, and the motor will not park itself but stays two inches above the park position.

I installed a new motor (just plugged it into the harness) and it displayed the same symptoms.

My wiper switch is good. I tested it and it passed everything according to my EVTM.

Why wont the wipers park normally and why is the interval governor buzzing?

What is my problem?

[87gtVIC]

Bump. Any ideas. I think I got a bum motor. What do you think?

[gadget73]

could be a bum motor. There is a testing procedure in the manual that shows all the electrical tests to perform, but I don't have a manual that covers that particular motor. The Mark VII has one thats probably electrically similar, but the plug and motor itself are completely different, and the manual gives testing procedures that refer to specific pins on the connector. The Towncar has the old 2 plug motor, and thats basically the same story.

[87gtVIC]

damn. I guess I still have to decode all of the wires and then possibly buy a GOOD motor.

For those that are curious here are a couple of pictures of the replacement motor:

[MattsLincoln]

sound like a problem i had with mine when they didn't want to park. It happened to be my wiper control module that was messed up replaced it and it worked fine. The wiper control module is located underneath the steering wheel attached to the shake brace. It's a black box it runs a plug all the way to your wiper switch stalk on the steering column. maybe that's the problem.


By the way what does the old motor look like. i am selling one.

[87gtVIC]

So your box on the shake brace was making noise too?

My motor is different from the one you are selling.

[86VickyLX]

Here are the symptoms once again:

-Wiper will not park.

-Wiper works in wash, intermittent, low and high speeds.

When wiper switch (on column) is put into park the wipers stop about two inches above the park position and do not move from there, the wiper interval governor makes a buzzing sound BUT the washer function still works (wipers go up and down to wipe away the fluid) but goes back to two inches above the park position and sounds the interval governor and remains there.

Basically the governor makes a buzzing noise when the lever is put into park, and the motor will not park itself but stays two inches above the park position.

I installed a new motor (just plugged it into the harness) and it displayed the same symptoms.

My wiper switch is good. I tested it and it passed everything according to my EVTM.

Why wont the wipers park normally and why is the interval governor buzzing?

What is my problem?

They are parked, your depressed park feature is inoperative. When the wipers are shut off, and park where you see them, the current in the motor is supposed to reverse. Pulling the wipers down below the windshield, it's not the wiper motor I can tell you that. Gotta look at the wires for depressed park mang.

[MattsLincoln]

Im saying it's your wiper control module it holds all the relays for the wiper motor and switch in there. One of your relays are faulty(the one for the park position). mine made noise when it tried to park never parked though. Replaced the WCM(Wiper Control Module) and it stopped. You can find one at a junkyard for about $5-8. Brand new would cost around $50. Just if you pull them from the junkyard make sure the car your pulling it off of it's wipers are parked. It's a common problem with these fords. You would have better life on a WCM from a CV, GM, or TC with low miles on it. I got mine off a CV with 40,000 miles on it.

[87gtVIC]

Im saying it's your wiper control module it holds all the relays for the wiper motor and switch in there. One of your relays are faulty(the one for the park position). mine made noise when it tried to park never parked though. Replaced the WCM(Wiper Control Module) and it stopped. You can find one at a junkyard for about $5-8. Brand new would cost around $50. Just if you pull them from the junkyard make sure the car your pulling it off of it's wipers are parked. It's a common problem with these fords. You would have better life on a WCM from a CV, GM, or TC with low miles on it. I got mine off a car with 40,000 miles on it.

THANK YOU this is the information I was looking for.... some definitive answer. You effin rock...well you only rock if that is indeed the problem

Now I went to a ford dealer and they do not sell or make the part anymore so it is off to ask some friends for help.

[MattsLincoln]

if you saw my vid of my marquis in the winter you would see that my wipers didn't park. That was before i replaced the WCM. it's better to just replace the WCM instead of fucking up all the wiring. The wiring all runs to the WCM and the certain relays for its operation.

[87gtVIC]

if you saw my vid of my marquis in the winter you would see that my wipers didn't park. That was before i replaced the WCM. it's better to just replace the WCM instead of fucking up all the wiring. The wiring all runs to the WCM and the certain relays for its operation.

Thank you again. Now the hard part on finding one begins.