Is there a common prob with the sunroofs on the 94 850's . Mine won't operate. And would like to find an area to look for, like shorts, fuses, or things to look for . Thanks. Marv.

 

Nothing common, they usually work fine. What's going on?

 

I pressed the button but no click or anything. Just got the car so at this point is it safe to say, check the switch, and fuse under the hood? Or is there another place to look like inside the car? Or where the fuel pump relay fuse is located?

 

When you hit the switch can you hear it try to move at all ?? If you try the switch at night do the interior lights dim at all when you hit the switch ??

The only common problem I've run into with them is first they get a little sticky where you hit the switch and you might have to reverse and hit it again to get it to go or they will only operate in one direction, either only vent up or roll back. Normally it's from lack of lubrication. I've use PB Blaster once, don't do it the stuff works great but it stinks for a couple weeks. Now I liberally spray WD40 on both sides from the inside using a towel to keep from hitting the headliner or letting any drip onto the interior and once it starts working I roll it back and then use engine oil to lube the slide or contact areas and they work great for a few more years.

 

I hear nothing at all. I've tried to press the switch both ways. Nothing. No click no drain in juice that I'm aware of. Could be loose something or fuse. I feel a salvage yard coming on. I know right where to go.

 

Your motor might be shot but I'd make sure you have power going up to the motor before you go through all the trouble of pulling yours out.

 

Yea, check your fuses before you run to the internet. The internet is NOT part of your brain. Then you should go get a $12 ohm meter and check for power at the switch and power at the motor and for a good ground at the motor and maybe even ohm out the motor.

I don't mine tearing into mine to help you compare. The dome light has small screws under the light lenses so don't go breaking that pulling on it.

 

I looked under the hood for fuses that listed "sun roof." is the sun roof listed in the fuse box under another name that I should reference for that certain fuse #? Thanks.

 

Did you look in the owners manual?

 

Nevermind!

 

fixed?

 

Fixed it the back of the switch harness was off; that's it. Easy fix. I wonder how long that was like that?

 

Good deal.

 

Now that it's back working it would be a good idea to lube it before you have a problem with it sticking.

 

Yep I agree. It looks like its been shut for a while. I'll put the lube on it. Can you guys point me to another question? After I get the car warmed up, after 15 min of driving, when I get to a stop, and then proceed to go, the transmission takes about 5 or 6 seconds to engage. It's like I am inching forward, then it will catch. Nothing jerky, just a slide in. Fluid is not burnt or anything, but my gut says vacuum line, or needs a complete flush . Any ideas? Thank you.

 

There isn't any vacuum connection to the transmission. Doing a flush yourself or a drain and fill would be a good idea as possibly the fluid might be the problem. The new stuff would surely have more cleaning power and maybe it's a sticky shift solenoid that isn't applying enough pressure at low RPMs. Fresh fluid is always a good place to start.

 

Thats what I will do. Should I put Lucas tran treatment as well?

 

Some people just don't like sunroof's and I bet they unpluged it because they feared problems with it.

 

IMHO, Lucas is a great additive, preventative and in some cases repair. I'm not a big fan of "mechanic in a can" but I've had good real world results using their products. I do run it in my transmission and use it on customer cars.

And when I recommended doing a flush yourself, I do mean YOU !! I used to work in fleet maintenance and we saw so many transmissions that were near or over 100K that had no history of being serviced or any driver complaints and when the driver went in for a "quick lube" they talked them into a flush with their machine and shortly after the transmission failed. Sometimes the grit in the fluid is what is holding it together.
Now that is my learned recommendation but I have to admit when I bought my 850 with over 250K on it and no maintenance history I couldn't stand the black fluid in the transmission and I did a home flush. It wasn't smart for me to do it but I couldn't stand the fluid and knew I was taking a chance. It's been a year now so I got off lucky and plan on doing it again this fall.

The two recommendations for doing the trans fluid. Either jack it up and pull the transmission drain plug and refill (approx 2+ to 3 quarts) with a short drive and do it three times or actually pull one of the cooler lines and spit out the contents into a container while adding fluid. Will take 9 to 12 quarts to see your fluid finally a nice light pink color.
On my 95 850 turbo it was the top line that is the output line from the trans that you want to put a hose on and stick in a container.
I found that the hose from a water softener is just the right ID to fit the cooler line. Had an extra coil of it sitting around.

IPD sells a kit which is nice since it includes new O rings and retainer. You can get them separately too.

Automatic Transmission Flush Hose Kit

Instructions with pictures. I just used a 5+ quart oil jug as it was already graduated on the one end.

http://www.matthewsvolvosite.com/for...php?f=1&t=8767

I did the flush alone. I would allow the engine to idle until I saw bubbles starting to flow in the hose and then shut it down, read how much fluid was in the container and pour roughly that amount of fresh fluid back in. You need to do it three times minimum to get the fluid clean and possibly a fourth if it's still not the right color after the third.

 

Ah Hah! Kids would do it!