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Wiper motor


Dons70

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My wiper motor on 1970 Monte runs but wipers only move up and down about an inch or two and then return and turning switch off doesn't always turn them off.  
Sometimes if I mess with switch they seem to work for a while, does this sound like switch or something within the motor?

Thanks

Don Rapp

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Disconnect the power going to the motor and just run a hot to the motor. That’s going to tell you if the motor is working. But based on you “messing “ with the switch, I’d say the switch is the culprit. IMO 

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When I'm trying to diagnose a problem and don't know for sure what to replace first, I always chose the simplest, least cost part first.

Wiper motor vs switch. Replace the switch first. After 50 years, it may need to be replaced anyway.

Good luck!

 

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