Projectman

My sunroof motor acts like a "stepper motor" taking about one step or jump per second - is this normal? Its an 86 944. The roof is not working but I hear a click ffrom the drive when I press the roof open switch (I assume it's a relay clicking). I pulled the roof opening mechanism out and hooked it up to a 12 volt power supply - the motor does not turn smoothly and constantly but jumps a partial turn about once a second as long as power is supplied. It does the same in reverse direction when the polarity is reversed. Is this how it should act or should I just get a new motor/drive unit? It would take a very, very long time for the roof to open or close if this is how it is supposed to work - it just does not seem "right".
Thanks for any help - I'm trying to bring a previously sadley negelected 944 back to life.

Mamooguy

Mine ('87 944) doesn't step, it just whirrs smoothly.

V2Rocket

Not that.

Projectman

Thanks guys, it sure didn't sound right to me either - I'm off to DC Automotive for some shopping!

cyinisis

I wonder how hard it would be to fab metal gears so stripping wouldn't happen...

V2Rocket

Sharkyyyy

GCrites80s

I'd be worried about metal gears making it more likely to break other, more expensive things.