wiper motor - Impala Tech
Troubleshooting Diagnosing problems

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post #1 of 3 (permalink) Old 06-23-2011, 10:13 AM Thread Starter
Join Date: May 2011
Location: Dallas, TX
Posts: 4
wiper motor

Got a 66 Impala. I believe it has an aftermarket wiper motor on it. When you turn on the wipers, it works fine. But when you turn them off, the wipers still move up and down an inch or two from their resting position. You have to turn off the car and turn the key to the on position and off position a couple times for the wipers to stop.

Today, I got them to stop moving, but when I went over a speed bump, they started dancing again.

Anything I can do to the current motor to make it stop dancing when they are suppose to be off?

Thanks, everyone.
APStephens is offline  
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post #2 of 3 (permalink) Old 06-23-2011, 06:20 PM
Join Date: Jan 2006
Posts: 12,458
Need to replace the switch that tells the motor that full circuit has been made. In order for the wipers not to stop mid wipe or to force you to time the at rest position while you are driving the factory installed a switch that makes contact with the wiper every time it makes a full revolution of the transmissions output shaft. That combined with a decay counter turns off the motor when you turn off the switch. Your contacts in your sensing switch are burnt away and need to be replaced.

Though it would be much easier to buy another wiper motor may be with a pulse wiper or variable speed off a newer car.

Big Dave
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post #3 of 3 (permalink) Old 06-28-2011, 09:45 PM
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Join Date: Apr 2011
Location: Keswick, Ontario
Posts: 181
Dave My wipers have the same issue. However, mine has the delay as you know. I don't use them that much, I don't drive it too much in the rain. But is it the same as Aaron's problem? Where is the sensing switch? I've changed the entire wiper motor too with another, and it does the same thing.
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