Low Boost, TCV Adaptation 2000 V70R

Sommerfeldt · Post by **Sommerfeldt** » 07 Apr 2019, 04:55

ndphotonl wrote: ↑07 Apr 2019, 04:29 Do you have the OEM part number for this?

Should be 9473212, me thinks.

- S

Post by **ndphotonl** » 07 Apr 2019, 07:08

Thanks!

Post by **bmdubya1198** » 07 Apr 2019, 08:02

ndphotonl wrote: ↑07 Apr 2019, 04:29 Do you have the OEM part number for this?

I don't have a Volvo PN for this particular TCV, but the Pierburg PN is 7.22908.03.0.

Post by **ndphotonl** » 07 Apr 2019, 08:08

That looks right, thanks!

https://www.ebay.com/itm/283442478117

Electric control valve (12V) PORSCHE 911, CAYENNE, PANAMERA; ROVER 75 1.8-4.8 06.00-

Post by **bmdubya1198** » 08 Apr 2019, 07:48

ndphotonl wrote: ↑07 Apr 2019, 08:08 That looks right, thanks!

https://www.ebay.com/itm/283442478117

Electric control valve (12V) PORSCHE 911, CAYENNE, PANAMERA; ROVER 75 1.8-4.8 06.00-

That's the one!

Post by **ndphotonl** » 08 Apr 2019, 10:32

Putting it on my order list

Post by **bmdubya1198** » 25 May 2019, 10:50

So I decided to check my CBV with a vacuum pump yesterday, and at 15 in-hg, it slowly bleeds dust to 0 within 25-30 seconds. I know the diaphragm is good, but I have heard of the cover being warped and unable to seal. Is this normal behavior for the CBV or is it leaking?

Overall the symptoms I’ve experienced this whole time point to either the TCV or CBV, so I wouldn’t be surprised if that’s the problem.

Sommerfeldt · Post by **Sommerfeldt** » 26 May 2019, 14:28

What happens if you pressurize it? I’m not sure vacuum testing it tells you much - it’s supposed to “let go” when the manifold has vacuum instead of pressure, right?

My CBV, with an iPD HD unit in it was definitely leaking around the edges though, and the piston style new one is very tight indeed.

- S

Post by **bmdubya1198** » 26 May 2019, 16:51

I have not tried pressurizing it, my old Mac cooling system pressure tester that I use for that stuff blew out the last time I used it. I did, however, test the CBV on my GLT in the same way and the results were the same, so I assume it's fine.

I believe that's how it works though, when the engine goes into vacuum it releases excess boost pressure.

Post by **abscate** » 27 May 2019, 04:00

Dumps all boost pressure on high vacuum.

Low Boost, TCV Adaptation 2000 V70R

Re: Low Boost, TCV Adaptation 2000 V70R