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Blow off valve failure? (BOV, CRV, CBD??) I know it's not a true BOV...but it failed..

8657 Views 16 Replies 7 Participants Last post by  imageomega, 
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Has this happened to anyone? Car is a 2005 with 10k on the clock - wife called and said the R had no power on the highway.... Dealer had it fixed in 20 mins...so that's the good news...what does this part cost and is the failure rate high?

TIA
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Re: Blow off valve failure? (needsdecaf)

Err, the CBV is part of the turbo assembly. The CBV is fairly reliable, and isn't a 20-minute job.

You are describing the TCV (Turbo Control Valve). That part has given many an R trouble, often however it's just a hose popping off. One of those hoses goes to the CBV, btw.

Tom.
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Re: (05_V70R)

Yep. Sticky TCV or loose hose suppresses boost. Open CBV doesn't totally suppress boost, but doesn't allow much of it either.

Tom.
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Re: Blow off valve failure? (JimLill)

I stand corrected. I thought the third hose went to the CBV. Where does it go?

Tom.
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Re: Blow off valve failure? (JimLill)

Quote, originally posted by JimLill »
post -MAF intake pipe
So, it's dumping the bit of boost that comes through the hose, back into the intake? Hey, that means it's a little tiny CBV/diverter!


Tom.
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