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About windshield wipers?
I Have a 1990 ford f150. The wipers only work on high, I put in a new switch and it didn't change. Then a day later I left home in a rain and they started working like they were supposed to. But about a 1/2 hour they quit working all but high and then they would slow down if the window started to get dry. Is this the motor or is there a relay somewhere?
3 Answers
- ?Lv 51 decade agoFavorite Answer
Pretty certain there is a rheostat for the wiper motor - that would explain still working on high. Sorry, don't know the location.
Try tapping the motor and see if they restart. Old tech trick but accurate.
- thisiscrazy70605Lv 61 decade ago
That trucks wiper motor usually grounds through it's case, so I do not think it is a bad ground. This sounds like a bad winding in the motor itself. Yea, change the wiper motor.
Source(s): Shadetree Mechanic
