95 850 transmission problem

Post by **erikv11** » 29 Aug 2011, 23:46

Maybe you already know this but: the trans input speed sensor connector is on the same harness with the O2 sensors, it is the third plug there.

did you try this link
https://www.matthewsvolvosite.com/forums ... =1&t=29930

I really dislike the way the repair database here is organized now, it should be much easier to find a specific link than to scroll through them 10 at a time ...

Post by **jblackburn** » 29 Aug 2011, 23:47

Here's the repair database link:
PNP Removal and Cleaning

The speed sensor on a 95 is very near the firewall side of the transmission. You should see the little nub sticking up.

elchopperfreak · Post by **elchopperfreak** » 30 Aug 2011, 00:02

Cool indeed, will remove PNP from my donor wagon, switch them,and then the redo the other..
Got to check that sensor though..94-95 etc, are all located at the same place?

Post by **jblackburn** » 30 Aug 2011, 09:26

Got to check that sensor though..94-95 etc, are all located at the same place?

Yup. They didn't change til the 96 model year when the new ABS system was introduced.

dbeckwith · Post by **dbeckwith** » 30 Aug 2011, 09:59

erikv11 wrote:There is a writeup in the repair database about how to clean the PNP. It is a very good and clear writeup.

The problem 99% of the time is worn copper contacts inside the PNP. You've got a parts car, right? Take the PNP from the parts car, open it up. Take out your PNP, open it up. Find the best 3 contacts of the 6 you will now have in front of you, put it back together, reinstall in exactly the same place, you will be good to go.

Here is the link from when I did this: https://www.matthewsvolvosite.com/forums ... 1&p=105245

I also recently saw a post here, that some online place is selling a "PNP rebuild kit" for these cars. The kit contains the 3 copper contacts. It is $20 which is too high but way cheaper than a new PNP. Do a search on this site if you want to find that.

You can get the contacts from Swedishcarparts.com. I ordered and installed in my PNP switch. Much less expensive than a new PNP switch

elchopperfreak · Post by **elchopperfreak** » 30 Aug 2011, 10:09

Super..
Thanks for the info

elchopperfreak · Post by **elchopperfreak** » 31 Aug 2011, 19:01

I believe I found the sensor, its way back on the trans, if facing the trans from front of the car towards the left side, next to what seems to be a mount.
Question, I looked for the plug all over, were does it ends and if so..

elchopperfreak · Post by **elchopperfreak** » 31 Aug 2011, 19:08

Should be number 7 on this diagram, right?

Post by **erikv11** » 31 Aug 2011, 23:01

On a 95, well on the 95 in my driveway, that plug comes out of the part of the harness that includes the 2 oxygen sensor plugs. The O2 sensor plugs are red.

elchopperfreak · Post by **elchopperfreak** » 01 Sep 2011, 00:58

Maybe im at the wrong one? There is a yellow and green wires but the o2 wires are blue if not mistaken..

95 850 transmission problem

Re: 95 850 transmission problem