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Re: Windshield wipers slower than grandma 200 1984

posted by  someone claiming to be Don Foster on  Tue Jan 30 07:47 CST 2001 [RELATED]

If you hear a grinding, then the motor may have loose magnets.

The motor bearings might be binding.

The motor brushes could be worn.

The wiper arm shafts (the two sticking through the cowl) might need lubrication.

The motor ground might be rotted. You can easily fabricate a new ground wire connected under the motor leg (at the chassis) and attached to the motor. Note that the motor is electrical isolated as a result of the three rubber vibration mounts. Check this by measuring the voltage between the motor and car chassis -- with the wipers on, it shouldn't be more then 1/2 volt.

Check the fuse to be sure it's making good contact.

Could be a bad wiper switch, though they usually don't fail.

Finally, it might be a failing relay (though I've never heard of one failing this way).



Don Foster (near Cape Cod, MA)





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