Re: Help....urq turbo problems

[Luis Marques <marques@raytheon.com>]

ejfluhr@austin.ibm.com (Fluhr)
> 
> Of course, as we all know, the Audi gods do not go lightly on us. 
> I buttoned the car back together and went out to do some runs to see
> if the problem still existed.  What happened next really baffles me.
> I was pushing full throttle in second gear and the boost climbed up
> to around 7psi, then the engine sort of lurched, and the boost
> pressure jumped up to 13psi.  After another pass (or maybe the next
> pass), when the boost pressure reached around 7psi, I heard some kind
> of screeching sound from the engine.  Now the screeching is there
> anytime I reach around 7psi of pressure.   I cannot tell if the sound
> is from air escaping, or has something to do with the turbo bearings
> or impeller.
>
> So, any suggestions would be greatly appreciated.


Clogged catalytic or mufflers (excessive backpressure)?

-Luis Marques
 '87 4kcsq