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AWD - Lumbar issue (97 850)

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Lumbar issue (97 850) 850 1997

I'm convinced the lumbar support in my 850 is wonky.

But i'm not sure what the issue is. My back has been killing me driving it (but not in my mercedes). I have the support all the way tightened but it doesn't seem to be supporting me at all. It almost feels like my back is arching backwards into the seat OR the bottom of the seat is just tilted too low (I've adjusted the seat positions every way till sunday, but it doesn't matter. Is there a manual tilt I'm missing? I know on the seats w/out electric movement you can raise and lower the seats a bit...is that also an option on the seats with electric movement?)

I feel like the passenger seat is much tighter, tho I'm not sure.


Is the lumbar support in the 850 seats as easy to access/repair as the ones in the 240 seats (I had an 85 240)?

I did fix the electric tilt on my old 93, so I know how to remove the seat cover, so I'm not worried about that. However, I just wonder if this is a common issue/easy fix.
--
1985 245. 246K Gone..but not forgotten. Sold in 2013, found 2018! Still running on the road. Of course. 1993 Volvo 850 soon to be gone





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Lumbar issue (97 850) 850 1997

It is not unheard of to have a lumbar cable break, especially ion a large heavy person sits in it long enough. Just as easy to fix as a 240, once the skin is off.

Or, you could look around for a 1998 driver's seat and swap it.

The electric seats do not have a manual position. It is also possible that the foam padding is ripped in places and in need of repair.
--
Keeping it running is better than buying new





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Lumbar issue (97 850) 850 1997

I ended up buying one of those lumbar pillows, and that made a difference. But it still feels weird to drive it. My middle back gets tight.

It could be my shoes are shot, but I drove my mercedes for about a week and didn't have this issue.

I do have the seat from my 93 (I'm parting it out. wasn't worth selling) that I might check to see what it looks like (since I KNOW it worked fine). I don't know the size of the person who drove it before me (for the bulk of the mileage). it was a father/son combo who drove it up here, but I don't know if the main driver (prior to the son) was the mom, and I have no idea of her size. But I do know the father and the so were both skinny.

I'm glad to hear it's not significantly different from the 240's. I repaired my 240 lumbar support about 900 times.

(In the process of dealing with this, I think I found out my AC compressor doesn't work at all. not sure if it's the clutch or switch. I tried filling it up with freon, but nothing changed in the system. It just doesn't turn on. That along with the lumbar issue is making it not so much fun to drive the car.)
--
1985 245. 246K Gone..but not forgotten. Sold in 2013, found 2018! Still running on the road. Of course.





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Lumbar issue (97 850) 850 1997

For the AC, with the engine on, AC switched on, unplug the wires to the pressostat and bridge them with a paper clip. If the compressor does not immediately turn on, the clutch gap may be too great. If the compressor engages, add a can of R134a and plug the pressostat back in.

The clutch gap should be minimal and will not work if the gap is greater than .040.

The 1993 seat can be bolted in easily, but it does not have a side air bag.
--
Keeping it running is better than buying new





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Lumbar issue (97 850) 850 1997

I think I found the pressostat (sp), but I'm not sure. Haven't had a good chance to deal with the AC just yet.


I did, however, look into the lumbar support stuff. It seemed to be fine, so I added about 1" of rigid padding (from an old yoga mat). It seems to have have made a big difference, but I won't know until I drive it tomorrow.

But then again, I'm not entirely certain what to look for in the lumbar mechanism.

I did notice tho, that the drivers seat lumbar support in the 93 was set up different than the lumbar support in the 97. The roller (?) in the 93 was on the left side, and the one for the 93 was on the right.
--
1985 245. 246K Gone..but not forgotten. Sold in 2013, found 2018! Still running on the road. Of course. 1993 Volvo 850 soon to be gone





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Lumbar issue (97 850) 850 1997

I sent you a picture of the seat back.

The pressostat is near the firewall, a 2 wire switch.
--
Keeping it running is better than buying new





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Lumbar issue (97 850) 850 1997

So I finally had the chance to tinker (again) with my AC. I tried some spacers, didn't make a difference. I tried letting out some of the freon (by accident actually). Then I re-filled it, and the can actually got cold, so that's good...but no difference.

Then, out of frustration, I started whacking the lines going into the car, and badda bing badda boom, it started working. I'm guessing the switch there was stuck or something?

No clue. I just know it works now.
--
1985 245. 246K Gone..but not forgotten. Sold in 2013, found 2018! Still running on the road. Of course. 1993 Volvo 850 soon to be gone





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Lumbar issue (97 850) 850 1997

Thanks
--
1985 245. 246K Gone..but not forgotten. Sold in 2013, found 2018! Still running on the road. Of course. 1993 Volvo 850 soon to be gone





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Lumbar issue (97 850) 850 1997

Fixing the lumbar isn't too bad of a job. Pliers to remove the hog rings on the seat back (replace them with zip-ties), other minor ripout (mind the plunger for the SIPS airbag!) and pull the cover up.

AC compressor: You'll need to defeat the pressure switch in order to get it to draw any refrigerant into the system. As long as it's just a problem of low freon, bridging that switch should allow the compressor to kick on, draw it in and you should be back in business. I had to do this on my '95 @~125K miles. I maybe added one more time on the way to 200k.





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