murray928

My rear wiper motor despite rebuilding doesnt have the strength to move the blades.
Is an upgrade possible. Will a motor from any other car fit ? Porsche price for a new one(about $650)just doesnt stack up on a cost/benefit basis.

bureau13

What is causing the problem? If your rebuilt motor is simply too weak, maybe a decent used one from 928 International would do the trick?

murray928

33 years old is the problem and having searched this forum extensively, it seems that many other owners have aging wonky motors too.
I live in Ireland and plenty of used ones on ebay here but I'm concerned that I might just be buying another dud.
I had the same problem with my old window motors but discovered on this forum that Saab motors were an excellent substitute and bought two new ones for very small money.
Was hoping that I could find a similar resolution to this problem.

Alan

It is really not a common failure mode (motor) so used is a reasonable option. Most commonly issues are with the linkage - are you sure you fixed that so it isn't binding?

Generally motors either work or not electrically - if they seem weak its usually an associated mechanical issue... I'd be looking there - either in the motor (bearings or gears) or in the linkage (binding, slipping etc).

Alan

murray928

Thanks Alan. The linkage is perfect and connects and moves freely. Problem is definitely with the motor. I respect your opinion so I'll probably go for a used one.

Speedtoys

Is this a hard motor to open clean, and regrease?

murray928

Thanks Alan, took your advice and bought a good looking used motor on ebay. Fantastic result, 3 minute swap and works perfectly now. Obviously my old motor was too weak to cycle properly when engaged with wiper even though it seemed to move perfectly when disengaged.