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Rear wiper slow

 
Old 02-10-2019, 08:54 PM
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Rear wiper slow

Rear wiper on my RDX is very slow, today it even stopped mid-cycle pointing straight up on the rear glass. With the wipers off there is resistance when I push it - itís not loose. If itís stuck, I can get it re-started by manually nudging it to get it going, but it seems to cycle slowly. Iím guessing I need a new motor, but I have not found any videos online explaining replacement. Has anyone else done this replacement, or know anything about it? Is it just removing the trim on the rear door, then unbolting a motor and reattaching? Any other diagnostic steps suggested before I buy a new motor? Thanks.
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Old 02-11-2019, 08:42 AM
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Here is the Acura Manual on replacing the wiper motor. Hope this helps

Last edited by dave08902; 02-11-2019 at 08:46 AM.
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Old 02-11-2019, 04:31 PM
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Originally Posted by kaehlin View Post
Rear wiper on my RDX is very slow, today it even stopped mid-cycle pointing straight up on the rear glass.
Maybe the motor armature needs cleaning or the pivot is seizing (usually not the case since it runs in a brass sleeve with a stainless steel shaft).

I rebuilt a starter for a friend because it was slow to start and it was not a connection or a battery problem. I know it is a starter, but an electric motor is an electric motor.

Wiper motors are set in a worm drive mechanism (for torque). Check the brushes, clean it, grease it and you are likely good to go. I have rebuilt these on my beaters when I was young.

Before:



After (same part):




If you are handy, these can easily be cleaned and rebuilt.

Last edited by Tech; 02-11-2019 at 04:33 PM.
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Old 02-12-2019, 06:41 AM
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Perfect, thanks! There are a lot of fasteners in that lower trim panel! I'll get to work and let you know how it turns out, appreciate the detailed help.
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