[ViggenStory93]

Hey guys i been having a problem with my car every time i let off the gas and drive normal. It makes a flutter sound at every rpm, Ive check the bpv vacuum line. My intake, and my down pipe because i thought it might be lose but its not that. And i am running a stock bpv right now. When i drive i let off and it usually blows off with a "WOOSH" sound. but now it just flutters like the boost is being dumping back into the turbo. Im guessing my bpv is dead/broken. i might need a new one if its the issue. but im not sure yet. ive also check my intercooler hoses. what do you guys think? will my car be alright to drive for a while? i dont have any money for a new blow off valve right now and the car feels real weak right now. what do youy guys might think the problem is?

 

[Frank_Drebin]

I put silicon vacuum lines on my car a few years ago and had the same problem you describe in a matter of minutes. What I found was that the vacuum line to the BPV had softened with the heat and fell right off. If you hear the flutter, I'd look at the BPV or associated controls/hardware. Do you know how to test your BPV? If not, I can post that.

 

[GarrettCharger]

It definitely sounds like the BPV is not doing what it is supposed to. I wouldn't drive it like that for too long. That "fluttering" is actually putting a fluccuating axial load on your turbo bearings... and bearings do not like that. You will end up with excessive shaft play and oil leakage past the turbo bearings if you drive like this for an extended period of time. I would replace it ASAP.

 

[ViggenStory93]

Damn alright guys thanks alot, Im thinking it is the bpv as well. Yes if u can post that Post on how to test the bpv that be great