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1995 850 turbo transmission problems.

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

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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1995 850 turbo transmission problems.

Post by star393 » Mon Feb 17, 2020 5:50 pm

The typical yellow arrow flashing problem and it’s causes
Along with flashing arrow also winter , econo and sport light flashes as well. Winter mode same
As flashing arrow lymp mode or 2nd gear take off. At one time i seen a code for wrong gear from the obd codes.. Somewhere I read key on and off with rapid selector movement to remind module what gear it was in and that worked for awhile. To clear up the limp mode problem. Car will take off in first again. But now the error is more persistence to go away. I heard module on trans gets dirty and causes problems like this.
Sweden built car
Any helpful thoughts. ???? Just to many diff problems for one yellow arrow to have and sort out

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polskamafia mjl

Re: 1995 850 turbo transmission problems.

Post by polskamafia mjl » Thu Feb 20, 2020 10:36 pm

Well the most common cause is a dirty PNP switch. Rowing the shifter back and forth helps clean it up and it sounds like you did that and had some initial success. Based on that I would recommend removing the PNP switch and cleaning up the insides and then reinstalling it.

Here's a long winded write up on the removal, cleaning, and reassembly of the PNP switch: viewtopic.php?t=29930

And Robert has a video of the process here:

I don't think you mentioned what year your 850 is but if its a 95 or earlier then you can read the transmission codes and get a better idea of what the problem is. If it is a 96 or later you'll have to have the codes read at a Volvo dealer or repair shop.
'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
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Re: 1995 850 turbo transmission problems.

Post by misha » Fri Feb 21, 2020 2:04 am

With flashing arrow car take off in 3rd gear.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
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

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