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Re: quattro-digest V4 #916

> Date: Fri, 11 Jul 1997 09:06:18 GMT
> From: quk@sievers.com (Phil Payne)
> Subject: Problems with newly purchased V8 Quattro 90'
> In message <33C56967.6447@accessus.net> "Randall C. Markarian" writes:
> > > 1) Definite "surging" between 2000 and 3000 rpm, there is no aother
> > >    way to explain it.  When I press on the gas pedal, the acceleration is
> > >    eratic, jerky.  Also, at highway speeds, holding the the gas pedal
> > >    in one position, keeping the same speed, the car seems to surge , forward,
> > >    backward. Again, I dont move the pedal, but it feels like I do.
> > First two symptoms are from a bad o2 sensor.  New one $120-130.  Typical
> > V8 problem.

> Phil Payne wrote:
> Agree when it's severe.  Very minor surging is sometimes caused by boost 
> control via the wastegate control valve.

Sergei Lubich writes:
Just received news from the dealer: 
Vacuum tube/hose was bad(torn) due to the oil leak from under the 
valve seals cover (behind the engine block) this might be the reason for the
surging problem.
I will still replace the O2 sensor , since I suspect it was never replaced, and
it would be better if I do.  The dealer checked it out, but its on the
edge of being within the normal operation.

I will not know for sure until I drive it again myself.
Also, there seems to be a dispute between dealers and parts places on 
how many Oxygen sensors there are in the 1990 V8 model .  The dealer says
two (the rep that is) but parts place which also quoted $119 vs dealers $170
claims there is only one O2.  Who is right?

> > > 5) Burnt engine oil smell, no visible leak , nothing on the ground either,
> > >    probably behind the engine block.
> He should check his gearbox oil level _NOW_!

Sergei Lubich writes:
This is an Automatic, you do mean auto transmission  fluid level? If so its
was actualy overfilled and the mechanic had to drain the extra out.

Sergei Lubich


> Serge-
> I'm not sure on your other problems, but the V8 is not known for it's
> terribly high fuel economy!  You may just need a complete tune-up, and
> injector cleaning.  Check sterring rack for leaks, might be pentosin
> dripping on manifold.
> Good luck 
> Jeremy Walters
> San Ramon, CA

Sergei Lubich writes:
I actually was going to buy the car , another V8, that had exchatcly the same