Vacuum leak I think? I need yalls help.

[1990EagleTalonTsi]

I posted about this problem a while back and was told it might be the ISC. But then found out it sounds like more of a vacuum leak somewhere. The car dies after being under some boost. Unless I tap the gas a little before that happens. Here is a video of me just reving it to hear the noise. Its like a really high pitched whistle. Please give me yalls input. It'll help alot. Thanks!


1990 Eagle Talon Tsi Greddy Exhaust Rev - YouTube

 

[husseinagiz]

my brother's car got the same problem whenever i hit the gas it goes away but when i stop at a red light it sounds like it stalled and that its about to die.

 

[TSI_1G_90]

Didn't watch the video but did you do a boost leak test?

 

[1990EagleTalonTsi]

No I dont think it has anything to do with the turbo

 

[bryanwheat]

No I dont think it has anything to do with the turbo

Well a boost leak test doesn't just test the turbo for leaks it test's everything from the turbo to the engine. If you suspect a vacuum leak or something like that than do a test. Hell you should do a boost leak test anyway.

 

[tay97gst]

^ What he said. Do a BLT.

 

[mchustle]

Do a Blt. My money is on the bov, my buddies car does the same thing and it's coming from his bov. My car also had a similar sound and it was the tb. None the less a Blt will solve it more than Likely.

 

[camas90gsx]

Do a Blt. My money is on the bov, my buddies car does the same thing and it's coming from his bov. My car also had a similar sound and it was the tb. None the less a Blt will solve it more than Likely.

+1 on that.I still to this day have a whistle that comes from my bov like that,but not near as intense,its usually when im traveling at steady speed.It sounds like you have a bunch of leaks simotaneously or a couple really bad leaks.When you go into boost,does it flutter and go rich then die?

 

[rEclipserGST]

Visually check all vacuum lines for leaks.

Do a boost leak test. Up to 20 lbs, should take a little bit to finally leak out all air. Use soapy water as well as an air compressor (not a bike pump!).

Fix whatever leaks you find. Report back with video. As you go if you can. So we can spot anything you did wrong during.

 

[1990EagleTalonTsi]

Thanks for all your help everyone! Ill try a boost leak test today

 

[1990EagleTalonTsi]

No the rps just drop a little faster than normal and it just dies.

 

[reddragon1]

Are venting the blow off valve to the atmosphere? Or is like stock?