Question about 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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Posted on Jan 02, 2017
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