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850 -93 automatic only drives in reverse

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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ZionXIX
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Year and Model: 1996 850 Turbo S/W
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Re: 850 -93 automatic only drives in reverse

Post by ZionXIX »

You're gonna have to remove the airbox and air hoses to visualize the pnp switch.
Scarlett: 1996 850 Turbo Wagon in Reagent Red Pearl ~210K mi
Norman: 2012 F150 XLT Crew Cab in Oxford White ~110K mi
Ember: 2005 XC90 2.5T FWD in Ruby Red Metallic ~83K mi *Newest addition to the fleet*
Ruby: 1997 850 Turbo Wagon in Reagent Red Pearl - parts car
Rose: 2020 Ram 1500 in Delmonico Red Pearl - SWMBO's Vehicle

Elle66
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Year and Model: 1993 850
Location: Sweden
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Post by Elle66 »

Hey!
Sorry for the late answer.
I have the orange blinking arrow in the cluster.
I will try to check if the shift arm moves, I read somewhere that you can test the pnp switch by checking if the reverse lights turn on when in reverse. And they do.
Will also try to erase the code.
Thanks for all the info guys, really helpful!
Will update as soon as possible!

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misha
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Year and Model: '97 850 2.5 20v
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Post by misha »

First...read the codes from A1 port and post them here.
If reverse lights are working in "R" position...pnp switch is ok.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

Elle66
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Year and Model: 1993 850
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Post by Elle66 »

Hi again!
I read the codes in the a1 port, I got the code 232.
Tried erasing the code and started the car. Blinking arrow disappeared for a while. Nothing happened in drive as usual, then the blinking arrow appeared again, read the codes again. Still code 232

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misha
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Post by misha »

Dtc 232 Speedometer signal missing

I would replace that sensor,read and clear the code after that and start from there.

Does it go forward in any other gear than D?
3,L?
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

Elle66
Posts: 10
Joined: 16 March 2022
Year and Model: 1993 850
Location: Sweden
Has thanked: 1 time

Post by Elle66 »

It doesn't move in any other gear than R.
I have a hard time finding a speed sensor for the car. Is it the orange/red looking thing under the gearbox (firewall side)?
The only ones I find online are black and doesn't look the same. It also says it's for -97 and forward. Even though I searched for my model.

Elle66
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Joined: 16 March 2022
Year and Model: 1993 850
Location: Sweden
Has thanked: 1 time

Post by Elle66 »

This is the speed sensor I've found. Does it look right?
https://m.autodoc.se/vemo/2295153
Hopefully the link works

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misha
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Post by misha »

It should be here:
Screenshot_2022-03-30-21-07-03-006.jpg
Screenshot_2022-03-30-21-07-03-006.jpg (398.97 KiB) Viewed 332 times
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

User avatar
ZionXIX
Posts: 1309
Joined: 11 August 2014
Year and Model: 1996 850 Turbo S/W
Location: Texas
Has thanked: 64 times
Been thanked: 194 times

Post by ZionXIX »

That looks like it's on the back of the transmission on the firewall side. What a pain to get to.
Scarlett: 1996 850 Turbo Wagon in Reagent Red Pearl ~210K mi
Norman: 2012 F150 XLT Crew Cab in Oxford White ~110K mi
Ember: 2005 XC90 2.5T FWD in Ruby Red Metallic ~83K mi *Newest addition to the fleet*
Ruby: 1997 850 Turbo Wagon in Reagent Red Pearl - parts car
Rose: 2020 Ram 1500 in Delmonico Red Pearl - SWMBO's Vehicle

Elle66
Posts: 10
Joined: 16 March 2022
Year and Model: 1993 850
Location: Sweden
Has thanked: 1 time

Post by Elle66 »

Tried to find the speed sensor. Couldn't remove it. But u took a photo, anyone that knows if this is the sensor? So I know if it's worth the hassle to remove it :P
Attachments
Sensor
Sensor
Snapchat-152509580.jpg (216.58 KiB) Viewed 281 times
Connector
Connector
Snapchat-1419037371.jpg (316.4 KiB) Viewed 281 times

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