Question about 2002 Mercury Grand Marquis
Posted by Anonymous on
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Posted on Jan 02, 2017
this is a very common problem on these vehicles. the wiper motor has a park switch built into it that fails. replace the wiper motor and this will stop problem. hope this info helps you!
Posted on Sep 22, 2009
It is part of the problem. The turn stalk in the column also has the wper control. The Autoturn OFF is in the motor. Usually this is a set of contacts or a small box plugged directly into the wiper motor. The small box works the delay feature but can also short and continue to run.
If your wiper has a removable cover you can spray WD40 on it and it may straighten out. If you see the small box, unplug it and see what effect it has. You may need to spray its contact terminals and the mating surfaces it plugs into.
Finally you can back off on the wiper mounting screws, spray WD40 and retighten. Sometimes the motors will lose their ground for the AutoOFF feature.
The turn stalk can also create your problem. Tighten its mounts after removing the plastic column cover.
Posted on May 29, 2010
SOURCE: My 1993 Mercury Grand Marquis
There are contacts inside the wiper motor. The electric signal from the steering column is going through to a part inside the wiper motor which is suppose to derail the electric contacts and shut off the wiper. Part of the system is working if the wipers shut off, but the other part which makes the cam inside complete the shut off cycle is not working.
You can check with an autoparts place to see if those small parts are available. Sometimes there are parts in a "Help" rack section that have odd parts like clips or fasteners which may fall off or break and keep a larger part from working (like your wipers). You would still need to get inside the wiper motor to change it.
Wiper motors are available in the Aftermarket or you can save money by using a Salvage yard. Your used wiper was working for many years until it finally broke. I hope my solution is very helpful to you in fixing your vehicle.
Posted on Mar 25, 2011
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