soon as i hit 10 psi it loses all power

[mocabro]

Hi, i own a 99 gst auto. Lately its been giving me problems where as soon as i hit 10 psi it loses all power and there is a vibrating noise. The bov also starts venting sometimes. I did a boost leak test and i can hear something leaking around the throttle body area but i cannot locate it. Any ideas what this might be ? or is there something else i should be thinking about too ?




sorry wrong forum ...

 

[Talonman86096]

Seals in the throttle body possibly

 

[mocabro]

is that fixable or will i need to get a new tb ? and how do i check to see if it is that

 

[1g_tsi_awd]

+1 for seals in throttle body...

http://vfaq.com/index-main.html

It says you can order the TB shaft seals for 5 bucks + s/h...

If that is your problem...

 

[Talonman86096]

Yea its fixable but like said above make sure thats where its leaking first....you said around the throttle body so I would think thats a pretty good bet but def. make sure

 

[mocabro]

thankyou .. ill work on it tommorow see what i can do.

 

[ddavisaf]

A good way to pin point a leak is to spray soapy water around the questionable area. If you are leaking, it will make the water bubble. If you've done any work to the TB lately it's a possibility you put the gaskets on upside down. This will cause a huge leak. Let us know what you find.