[200q20v] Car Bucking Under Boost

Joseph Vanzeipel vanzeipel at sunvalley.net
Sun Oct 22 18:34:00 EDT 2000

I replaced the Turbo Bypass Valve on mine and the bucking went away.  Does
your make a chattering sound when you shift?  It could be the TBV, or the
vacuum hose that goes from the TBV to the back of the IM.

Joseph Vanzeipel
91 200 quattro (105k)

on 10/22/00 15:39, Mike & Tanya Atkisson at matkisson at yahoo.com wrote:

> In the past few days my car has started acting funny.  When I stepped on the
> gas to pass a line of cars, my car started bucking wildly.  When I let off
> the gas it went away, but when I stepped on it again, it was bucking.  If I
> accelerate gradually I can still go plenty fast, but I miss my acceleration.
> In watching the boost gauge in the computer I am still making boost when
> this occurs.  Could this be a fuel pump problem??  I had someone tell me
> that by the sound my fuel pump was making, it was going to go bad soon.  The
> first day I noticed this problem it went away after a couple of minutes.
> Today it seems to not be going away at all.
> Any idea where I should start checking??
> Mike
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