The cabrio system on my 1990 944 s2 works properly, but then after a few hours stops working. I have to sometimes wait overnight before it beggins to work again. Forcing the cabrio itself up or down don't help. Is it a connection, motor, relay problem or something else? Can someone help me?

 

Its clearly an intermittent electrical fault. Is there any water ingress around the motors etc?
Otherwise its a wiring diagram job and trace through the system with an AVO Meter to confirm you have good connectivity etc.
Regards Big Bob

 

Sounds like maybe a relay is getting hot. I don't have any experience with 944 cabs unfortunately.

 

Thanks Big Bob for your insght. Where exactly is the motor located to check for any water dammage? I don't do any major repairs my self but due to the fact that we have no Porsche repair shops in my city (have to drive 7 hrs to the nearest one), I have to lead my mechanic into what to do.

 

Thanks PorscheDoc for your diagnosis. Do you Know which particular relay I must Check/replace?
I tried checking before but I imported the car from germany, drove it though the Autobahn (what an experience), and then home. Well anyways, everthing is in german and don't know the language? Can you help me with this?

 

Now there has been no responce from the system for two days. The windows go down in reaction to the closing feature but the cabrio itself dont react up or down. Thank God the top was up!

 

Suggest you get yourself therefore a Haynes Publishing Repair Manual for the 944. They are pretty good, "und es ist in Englisch geshrieben" ie written in English.
My advice was following general principles of fault finding, so we now need to get you enough information to work through that process. So the Haynes Book would be a good start.
Regards Big Bob