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Volvo 850 SL Solenoid

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70
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Volvebaker
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Year and Model: 1993 850 GLT
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Volvo 850 SL Solenoid

Post by Volvebaker »

Hello all!

I am in the middle of a transmission solenoid replacement. Has been a major pain :(

Anyways, I am well aware that the S1 and S2 solenoids were changed in later years (I bought two green and alas have a green and a black S2 and S1.

However, my issue is the SL Solenoid. This is the one I was actually doing this whole job for. Well I ordered the set and I have not found ANYWHERE that the SL Solenoid is different in years I was under impression it was the same for all years AW 50-42LE.

Well I got it out and the SL Solenoid I ordered (P/n 6843784) looks completely different from the SL I took out!
F61CB717-35BC-4046-AA1C-00896F882DC9.jpeg
Including the plug being on opposite end :cry: !

If this fits and plugs in will it work? Or is there another SL Solenoid for this tranny and where might I find that?

Thanks for any help that can be provided!
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polskamafia mjl
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Post by polskamafia mjl »

So it's been a long time since I did this job. Will the wiring reach to your new SL solenoid? If it does then I think you should be ok to use it. If not then you'll have to look around again and try to find the correct part. I don't know why suppliers have such a hard time getting the correct solenoids. In the end I decided to be done with the whole mess and just manual swapped my T5R. That's the only real solution :P
'All my money is gone and I have an old Volvo.' - Bamse's Turbo Underpants

Current: 1995 Volvo 850 T-5R Manual - Bringing it back from the brink of death
Previous: 1996 Volvo 850 GLT - Totaled
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Volvebaker
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Year and Model: 1993 850 GLT
Location: Georgia
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Post by Volvebaker »

polskamafia mjl wrote: ↑27 Feb 2020, 21:19 So it's been a long time since I did this job. Will the wiring reach to your new SL solenoid? If it does then I think you should be ok to use it. If not then you'll have to look around again and try to find the correct part. I don't know why suppliers have such a hard time getting the correct solenoids. In the end I decided to be done with the whole mess and just manual swapped my T5R. That's the only real solution :P
Thanks for the response!

Yes, it does reach around and it plugs in and mounts the same as the one that was installed.

Mine looks basically identical to the shot in your write up of the valve body with the new solenoids in. That is: black/yellow S1, green S2, and now a brown and round SL as opposed to the somewhat square and grey/green plug that was installed.

I'm just going to assume that this will work. Although it does not look like the one I removed, I cannot find one that looks like the one I removed anywhere online! Also, I have not found anything but one p/n for the SL Solenoid on aw 50-42le. So, I'm just gonna give it a shot. The one I took out did test bad on ohm meter.

I sure hope that it is compatible as I do not want to do this job again. Had bolt number 4 strip out on me which then led to the head twisting off when trying to extract it. I should've gotten a longer T40 bit to begin with. Live and learn but now I've got a bolt stuck in there and need to deal with that.

If I could find a decently priced manual transmission I would LOVE to do the same...
DE184EC6-F93F-4332-9EE4-578BDC7A3E84.png
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Volvebaker
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Year and Model: 1993 850 GLT
Location: Georgia
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Post by Volvebaker »

An update for anyone that may be interested...

Finally finished the job and, though the Lock Up solenoid looked NOTHING like the replacement, it seems to be working properly and the dreaded arrow is gone!

As for the twisted off bolt, my fix for that would have to be explained in another thread but as of now...no leaks 8)
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polskamafia mjl
Posts: 2640
Joined: 1 April 2009
Year and Model: 1995 Volvo 854 T-5R
Location: Hershey, PA
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Post by polskamafia mjl »

Congrats! This is a tedious repair and doing it succesfully is a tremendous feeling! I hope you have many, many trouble free miles!
'All my money is gone and I have an old Volvo.' - Bamse's Turbo Underpants

Current: 1995 Volvo 850 T-5R Manual - Bringing it back from the brink of death
Previous: 1996 Volvo 850 GLT - Totaled
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850Blues
Posts: 1
Joined: 5 January 2021
Year and Model: 1995 V850
Location: Northern Germany

Post by 850Blues »

Hi Volvemaker,

(Please excuse my bad english!)

After weeks in the workshop my 850 still doesn't work...
It has the same problem with the SL Solenoid. Old and new part look like yours... But I can't do or even try to fix it myself.
Me too, I bought a new part (and waited several weeks to get it from US), the Volvo workshop installed it, but the ARROW stayed blinking!
They think it isn't quite the right part, so I don't risk to damage the automatic transmission...

So I am very interested to know if your 850 still is OK?

Thanks a lot!
Greetings,
Michael
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