How to get to the turbo boost sensor live in the S80 D3?

[seanc]

Hi,

I'm trying to get at my turbo boost sensor that lives in the side of the intercooler to change it, but I can't find it! I'd have thought it would be somewhere near the bottom of the car?

In this thread for the V60 D3, it's apparently accessible through the passenger headlamp area, but I guess the S80 is built differently or I'm being thick.

Any help is appreciated or I might just have to take it to my local garage.

Sean.

[tt82]

On my V70 D5, it is on the N/S on the intercooler, in between the cage for the radiators and the plastic shielding. Apparently it can be done by just removing the sump cover but I removed the front bumper of my car in order to do it.

[tommyweaves]

Hi Sean, on my V70 D3 (MY2011) it's on the intercooler pipe where it joins the intercooler on the passenger side (right side as you look under the bonnet standing in front of the car).

If you need a photo send me a DM with your email and I'll send one.

[seanc]

Originally Posted by tommyweaves

Hi Sean, on my V70 D3 (MY2011) it's on the intercooler pipe where it joins the intercooler on the passenger side (right side as you look under the bonnet standing in front of the car).

If you need a photo send me a DM with your email and I'll send one.

That would be really useful! Tried to PM you, but not allowed as I don't have 30 posts yet.
I'll have a look for it again tomorrow, if you can get a picture up somewhere, it would be helpful.

Thanks.

[tommyweaves]

Originally Posted by seanc

That would be really useful! Tried to PM you, but not allowed as I don't have 30 posts yet.
I'll have a look for it again tomorrow, if you can get a picture up somewhere, it would be helpful.

Thanks.

Will send you a DM with my email, send email to me and I'll send pics back

[seanc]

Thank you very much to Tom for the pictures, I'd have never worked it out otherwise.

Here's Tom's car and sensor


Here's what I see on my S80 from the same position


You can see the same rubber pipe on the right hand side and the fan cowling on the left, but there's a another pipe and a big silver block in the way! I can only assume it's part of the aircon?

I managed to remove the rubber pipe and get access between that silver block and the headlamp fittings - it's very tight, you need slim arms!

Unplugged the connector, guided the extension bars down and unscrewed the screw, gently finished and retrieved it by hand. Wiggled the sensor out of place. The next part was working blind as my arm obscured my view of where the sensor needed to go. Much trial and error to find the hole which involved resting the sensor on something and getting my arm out the way to have a look


Managed to get it in and stuck the screw onto the end of my extension bars, screwed it in. Plugged it all back in and restored headlamp to its rightful place.

Here's a pic of my access, with the new sensor installed


So far, so good, need to go out again for a longer drive to test and I'll report back.

[tt82]

The big silver thing is the heat exchange for the automatic gearbox fluid. It uses engine coolant to warm it up when it is cold, and cool it down when it gets hot. As I said, it's a nightmare to get to!

I jumped the gun when my sensor went and suspected it was a turbo hose. I ordered DO88 replacements before getting it home and reading the car with VIDA, only to find it was the sensor. So I decided to take the car off the road for a few days and do some work on it. Fitting the new DO88 hoses and also taking the opportunity to clean out the EGR valve. I'll attach pictures of what my car looked like.

[seanc]

Originally Posted by tt82

The big silver thing is the heat exchange for the automatic gearbox fluid. It uses engine coolant to warm it up when it is cold, and cool it down when it gets hot. As I said, it's a nightmare to get to!

I jumped the gun when my sensor went and suspected it was a turbo hose. I ordered DO88 replacements before getting it home and reading the car with VIDA, only to find it was the sensor. So I decided to take the car off the road for a few days and do some work on it. Fitting the new DO88 hoses and also taking the opportunity to clean out the EGR valve. I'll attach pictures of what my car looked like.

Thanks for that.
My turbo hose did actually split back in May and threw a code/limp mode. I first noticed the hesitation on the drive with Volvo recovery during that episode, unfortunately it stuck after the hose was replaced.

Lately it just seemed to be doing it more and more, not throwing any codes though.

It seems much better now, I'm hoping it is actually fixed... it was having 'good days' with the old sensor and the fault being intermittent is why I think it's wasn't throwing a code.

[tommyweaves]

Originally Posted by seanc

Thanks for that.
My turbo hose did actually split back in May and threw a code/limp mode. I first noticed the hesitation on the drive with Volvo recovery during that episode, unfortunately it stuck after the hose was replaced.

Lately it just seemed to be doing it more and more, not throwing any codes though.

It seems much better now, I'm hoping it is actually fixed... it was having 'good days' with the old sensor and the fault being intermittent is why I think it's wasn't throwing a code.

Fingers crossed that you're sorted. My sensor didn't throw up any codes either but when the Volvo dealer hooked it up to the computer the sensor was putting values 10 times what was expected.

On codes: a one off fault will show as a "pending code" and if it happens again then it becomes a "full code". Your was intermittent like mine without any code so I assume the sensor or ECU doesn't know it's not working correctly.