spyder348

Some of you are probably allready familiar. I might be in the wrong section but not enough of us 930s with certain problems. I have an 87 930. Might I ad the door switches are the type with a rubber cover and are round. I have a battery drain which was noticed more from the cold. Also noticed windows and sunroof work all the time key or no key which means the door switch relay or power window relay is either bad or not being signaled off from door switch. I'm leaning towards switch because interior lights (in the right position) don't come on with door open or closed.

rusnak

It's not the door switch. Most likely a stuck relay. You can measure parasitic drain with a multimeter. Then just remove fuses to narrow down which circuit. If you disconnect the power window relay, and the drain goes away, then you found the problem.

spyder348

Why would the interior lights not work with the doors open? Where are the relays? Trunk or behind dash? Also last piece of info. Passenger door switch is tight and drivers is loose and spins freely.

rusnak

Your drivers side door switch wire probably fell off. It's a pita to fish the wire out and re-attach it.

It CAN BE DONE, just keep that thought in mind. Others have done it with wires, tape, magnets, whatever.

spyder348

Would the drivers side switch wire falling off cause my issues? Also whats the best way to remove the switch? I feel like a stuck relay would cause the ongoing power issue but the lights would still work. Do you agree?

rusnak

Well your int light fuse could be blown too.

Use a 13mm socket I think, on the switch base to loosen it. Then hold the plastic plunger with one hand while loosening the base with rhe other to prevent the wire from twisting off. You would pull the wire out through the hole carefully. I think yours has probably fallen off.

The parasitic drain is measured with an ammeter set to milliamps. You remove one fuse at a time, then replace until you see the drain fall off dramatically.

spyder348

Ok so take the rubber cover off and unscrew the base while holding the center. I don't think the fuse is bad. The lights work fine when switched on its just when there in door open mode they don't work. And I do understand what you are saying about locating the drain. Thanks

spyder348

So it sounds like 1 power wire runs to the switch and it grounds through the body. Pretty simple yet pretty crappy if the little wire breaks and falls inside. I bet you the free turning back and forth its doing broke the wire.

spyder348

Thanks for the help rusnak. It ended up being that both switches were dirty and that fixed everything.20 ma draw now. Very happy.

dshepp806

.200 mA's? Sure?

The first thing I did when I bought mine was get those switches out of there and put some fresh contacts in those electrical paths.

Best,


Doyle

spyder348

I meant 20 ma's. I have done draw tests before and anything under 25 ma was pretty good. Fortunately my wires going to the switches are in good shape.

dshepp806

Ah,..that's better.

Doyle

miketurbo

I am having issues with my 1989 930. I park it for a few days and the battery dies completely. I pulled the battery and got a full charge on it and put it back. Before hooking the battery back up I stuck a multi-meter inline to measure draw (keys off and out). I measured 1.2A. pretty substantial as I was told the goal is 0.06A or less. I am going to start picking fuses tonight to see if I can narrow it down a bit. Any initial guesses as to what I might find?

Thanks,

Mike