jones94

what does the charge relief valve do? i thought it was a second air bypass valve until studying detailed vacuum line pics. it doesnt make near as much sound when letting off the throttle as the air bypass valve, and i was just wanting to make sure it was working correctly.

VegasFD

I hate to be one of those people they say search, but in your case, this topic has been gone over many many times. Search "CRV".

jones94

ive already searched. i just want to make sure its not as loud as the air bypass valve.

dgeesaman

iTrader: (7)

It shouldn't be as loud. It's doing a different job.

lisaRX7infini

i need help my car seems sluggish about 4500rpm up n had a look and search and then lloked at my engine and it seem the charge relief valve well the vac line coming from it looks a bit collapsed? is this my problem?

got a boost gauge today so gonna do a boost pattern check see wot it reads

how can i fix this issue?

BillM

iTrader: (4)

The charge relief valve works with the second turbo. Its on the output side (compressed air). Below 3000rmp the second turbo is off so the valve stays open. At 3000-4500rmp the second turbo prespools but is not producing boost to the engine. So the compressed air is sent out past the charge relief valve which is still open. Above 4500 the second turbo is required to produce normal boost so the compressed air is routed to the engine. At this point the crv is closed preventing the second turbo air from being vented.

lisaRX7infini

my VAC hose off the charge releif valve is looking crusged (sucked in)

BillM

iTrader: (4)

I would replace it, cheap enough...