vernon

Hi my 1984 928s the sunroof is not working is their a relay in the system? I can not fine one. Vernon.

Mrmerlin

Welcome, this is a great place to assist in fixing your machine.

its usually the switch get a can of deoxit spray and shoot some into the switch it should restore function

https://rennlist.com/forums/928-foru...t=deoxit+spray


its a good idea to read the FAQ at the top of the page

Wisconsin Joe

"Not working" is pretty vague.

No relay, AFAIK. Just a fuse. Check that first.

What happens when you hit the switch? Does the voltmeter twitch at all? If not, start with the switch and then check the wiring.

If it does, pull the cover and see what the motor is doing. If the mechanism is gummed up, it will stall the motor out fairly easily. If the motor is trying to turn, try turning the rubber connector between the motor and transmission. It should move with your fingers.

Narrow down the symptoms a bit and you will get more specific advice.

Jetdriver69

I had the same problem on my 82. I removed the sunroof switch and used fine grit sandpaper along with the electronic cleaner to clean up the contacts.

Mine were pretty cruddy after 30 years.

I did the same for the window switches and they work better too.

The switches just pop out but be careful of the tiny springs inside the switch, they are tough to find if they fall out on black carpet and probably impossible to replace if you lose one...

Mrmerlin

jetdriver add some deoxit spray to your switches they will work a lot better, I promise

Jetdriver69

I used the spray before I removed the switches, there was just too much gunk build up on the contacts. But it worked great on the mirror switch, like new again.

Wisconsin Joe

I'm not sure about the window/sunroof switch springs, but I managed to lose the one out of the alarm switch on my door lock cylinder.

Believe it or not, it's available as a Porsche part (it has it's own number and everything). But it's $10. For a teeny tiny spring. I was at the dealer for something else and asked.

So I went to the local hobby shop and scrounged around.
They had one close enough in the "slot car" parts bin. It's either for the brushes on the motor or the pickup shoes (not sure, we looked through a lot).

$2.50 for 4.

The guy at the hobby shop suggested I give the dealer a call back and offer them at $5 each

vernon

Thank you every thing works on my car the sun is out now so this is the time to open it up. I did not use it all winter but I will check out every thing that you guys said. Thanks for the help Vernon.