Wiper Motor Alternative?

[DoctorPDR]

Last year, I bought a brand new (NOS) Marelli Wiper motor in hopes that the low and high speed would be more significant. Unfortunately, it seems that the rheostat switch in low or high makes no noticeable difference in the wiper speed.

Is there something I can do, perhaps put a different wiper motor in? What wiper motor would work?

[Foster48x]

Doc, this might help you out. James Seabolt was able to retrofit a Bosch unit for his original Marelli.
http://users.chartertn.net/jseabolt/bosch.htm

I though about doing the same but in the end decided to refurb the original Marrelli.

Rick

[DoctorPDR]

Doc, this might help you out. James Seabolt was able to retrofit a Bosch unit for his original Marelli.
http://users.chartertn.net/jseabolt/bosch.htm

I though about doing the same but in the end decided to refurb the original Marrelli.

Rick

Hey Rick,

After refurbishment, do you notice a difference between low and high speeds?

Rof

[Foster48x]

No. But I think it's got something to do with the switch or the relay... or something else not the motor. Maybe I'm wrong. All I did was replace the large main gear and clean it up. My main motivation was just to get it working so the car could be inspected.

Rick

[baltobernie]

Is there something I can do ...

I'd suggest checking the voltage being delivered at the wiper motor before replacing any components. Most Spiders have a plastic electrical connector under the cowl, and they can corrode. With 13+ volts at the motor, that sucker will sweep about once per second on Hi.

[beachboy]

RainX will make you not care about the speed of the wipers.

[manoa matt]

1. Brown wire surgery
2. Clean wiper rack and lube
3. Clean wiper motor brushes and contact points.
4. Clean and re-lube wiper motor gears
5. Clean all electrical contacts in the wiper system
6. New wiper blades and rain-X

[DoctorPDR]

1. Brown wire surgery
2. Clean wiper rack and lube
3. Clean wiper motor brushes and contact points.
4. Clean and re-lube wiper motor gears
5. Clean all electrical contacts in the wiper system
6. New wiper blades and rain-X

New wiper motor was installed last year. So 2-4 won't apply. I have an 81, so the brown wire surgery is not necessary. All electrical contacts are secure and good. Installed new wipers last year. Rain-X was never applied.

Is it possible that the rheostat switch needs to be replaced???

[rlux4]

Yes. And no. When I got my car, the rheostat didn't work so I took it apart to see if I could diagnose the problem. The resistor plate had a power connection on the incoming side, but whatever made the connection on the outgoing side was gone. I just laid a solder strip to make the connection and it works good as new. So yes, you can replace it, but it wouldn't hurt to open it up, it may be repairable.
Ron