V70 automatic transmission

Post by **abscate** » 14 Mar 2017, 02:00

Ugh..wheels turn in park?

Differential sounds good, transmission not good.

On edit...totally missed the jacked up,part. See Erik comment below

Post by **erikv11** » 14 Mar 2017, 07:26

johnhb wrote:OK, I've put the Volvo up on stands. When I rotate the RH (driver's) side wheel the LH side wheel rotates in reverse and vice versa for the LH wheel. ...

Just to be clear: this is exactly what you expect when the transmission is in park. So if the selector is at P now, this is a good sign not a bad one.

Is the linkage all good to the PNP, and the PNP moves as expected when the shifter moves? Might take two people to look at that.

Post by **Clemens** » 14 Mar 2017, 13:51

with both wheels up in the air it could still be the axles because if it slipped out a bit only you have enough friction to spin the other wheel, but not enough to move that 1500kg car. Wishing you it is that simple.

johnhb · Post by **johnhb** » 14 Mar 2017, 21:26

Ok, here's the latest information. Have checked that the drive selector does move the transmission selector. There is no cable break or loose connections. The drive selector moves the transmission selector over the full range.
Here's the current scenario:-
1/ Volvo up on jacks. Engine off.
2/ In Park the wheels are locked together - that is if I rotate the RH wheel the LF wheel rotates in reverse and vice versa. If I chock the LH wheel and try to rotate the RH wheel I cannot, only can rotate it in reverse direction.
3/ In Reverse or Drive the wheels are free spinning - that is I can turn any wheel in any direction and the opposite wheel move a little then remains stationary.
4/ When I put the drive selector back into Park and turn either wheel there is a clunk then both wheels are once again locked together as in step 2.
5/ Volvo up on jacks. Engine running.
6/ Select Reverse and both wheels turn. Chock one wheel at a time and other wheel continues to rotate.
7/ Same scenario in Drive.
8/ No clunking/grinding noise when Park is selected.

Might lower the car and do a test up and down the driveway.

johnhb · Post by **johnhb** » 14 Mar 2017, 22:38

I think my Volvo is haunted. I just removed the jacks and did a short (few metres) drive up and down the driveway. All seems to be working ok and no grinding when I put selector to Park. Park also immobilises the car which it didn't before. Apart from a look underneath and fiddling with turning wheels by hand I have done nothing else. I am quite reluctant to take the car out on the road but I guess I must.

Post by **theWIFES_S70** » 14 Mar 2017, 23:06

johnbb, glad to hear things are "sorting" themselves out... Our car has had its share of problems, but I haven't encountered anything like this yet. (Knock on wood!) It sounds like moving it around fixed the problem. I've had cars that were "self-healing" but I don't know about these P80s... I'm not an AT expert, but I'd guess "something" is getting stuck or there is some "connection" that is not quite right...

Two things that I would really give a good looking to under the shifter selector are the

Volvo Auto Trans Shifter Assembly - Genuine Volvo 9466031
https://www.eeuroparts.com/Parts/51297/ ... DQody0gPsg

the Volvo Shift Interlock Solenoid (S70 C70 V70 850) Genuine Volvo - 9466049
https://www.fcpeuro.com/products/volvo- ... vo-9466049

and the Volvo Gear Selector Switch (850 S70 C70 V70) Genuine Volvo 9466028

https://www.fcpeuro.com/products/volvo- ... 70-9466028

Maybe there's something loose around there, something getting stuck, something shorting, or something broken in there....

Sounds like you're getting closer to solving this issue! I can't wait to hear that your car is good as new!

johnhb · Post by **johnhb** » 16 Mar 2017, 15:15

Thanks 'The Wifes_S70'. Where can I find out just what these parts do? I am still puzzled why when trying to select Park there is a grinding noise and vibration in the drive selector. The noise reminds me of trying to change a manual gearbox without pushing in the clutch. This noise and vibration only occurs when moving from Reverse to Park.
The car broke down again last night, as I tried to accelerate round a corner it just came to stop. Felt like I had just selected Neutral. So the Volvo's back in the carport awaiting further investigation and decision as to what to do next.

Post by **wizechatmgr** » 16 Mar 2017, 16:03

Is the car moving at all when this noise occurs? How long does the grinding sound like it might last? Does it sound like it is consistent, getting worse or getting better?

Post by **theWIFES_S70** » 16 Mar 2017, 16:15

johnhb wrote:Thanks 'The Wifes_S70'. Where can I find out just what these parts do? I am still puzzled why when trying to select Park there is a grinding noise and vibration in the drive selector.

Yeah, that does seem odd. Especially considering your transmission fluid is pink and you didn't notice any sort of transmission issues before this happened. The fact that the car was "normal" after you lifted the car and put it back down again, tells me this is not something usual...

I don't know what these parts do. I'm just speculating here. I'm hoping it's a short or a broken wire that's doing this. The fact that you don't have a transmission light makes me doubt you have a neutral safety switch issue (though, I wouldn't rule out taking it out, inspecting it, and cleaning it and then reinstalling it) or any other transmission solenoid issue...

RobertDIY has a video of how to identify the parts I mentioned above. He also shows how to take this stuff apart. You might want to check it out so you know what you're doing. It doesn't seem terribly difficult. I really hope it's something like this, johnbb. Keep us posted!

johnhb · Post by **johnhb** » 16 Mar 2017, 20:10

Let me see if I can make some clearer statements. When the problem reoccurred last night there was no noise. I just drifted around the corner to a stop. Felt like the car was in neutral. When I tried to put shift to Park there was a grinding noise, like gears meshing - this only occurs when moving from Reverse to Park. Had car trucked home. Today I did the following:
1/ Raised RH side of vehicle and placed on jack.
2/ RH wheel could be turned freely in either direction even though drive selector was in Park.
3/ Started engine, applied footbrake and engaged Reverse. There was a grinding noise for about 20 seconds then no noise.
4/ Stopped engine. Now unable to turn RH wheel by hand with drive selector in Park.
5/ Lowered car to ground and tried Forward and Reverse. Vehicle moves accordingly.
I don't have the courage to drive out of my driveway - don't want to call the tow truck a third time.
I will take a look at the above video.

Thanks everyone for you help thus far.

V70 automatic transmission

Re: V70 automatic transmission