Re: [20v] ‘91 coupe hesitates on acceleration

[Christopher Gharibo]

Hi George,

The symptom are when the car warms up the engine cuts off every second at
idle. This is very subtle.

As I accelerate, the engine cut off becomes a lot more pronounced and will
actually rock the car.

Sometimes, when I pull to a parking spot or take a turn, the engine will
stall.

When I pulled the codes, I got TPS and idle stabilizer which I replaced with a
new unit.

The CQ got a timing belt at 240k along with plugs, distributor cap, rotor,
plugs, etc and was driving fine for about 5000 miles.

I cleaned the ISV.

CG

------ Original Message ------
Received: Wed, 05 Sep 2018 08:22:40 PM EDT
From: "GEORGE STROE" <gstroe at cogeco.ca>
To: Peter Schulz <pcschulz at gmail.com>,Christopher Gharibo
<cgharibo at usa.net>Cc: PAUL RERRIE <paulrerrie at hotmail.com>,"20v at lists.20v.org"
<20v at lists.20v.org>,quattro at audifans.com
Subject: Re: [20v] ‘91 coupe hesitates on acceleration

> Hello Chris 
> 
> Can you elaborate a bit more? When I had a knock sensor fault the engine was
cutting off at highway speeds and also at 60 kms/hr in city driving when using
the 4th gear. As always, pull the codes and see what you get, if it is a knock
sensor you will get a fault code guaranteed 
> 
> 
> George 
> 
> On 09/05/18, Peter Schulz  <pcschulz at gmail.com> wrote:
> > 
> > 
> > 
> > 
> > Disconnecting the knock sensors does not “stop” knock sensing, in fact
it put its in default as if they were detecting knock. 
> > ie - retarding the ignition.
> > 
> > 
> > 
> > 
> > 
> > > On Sep 5, 2018, at 5:57 AM, Christopher Gharibo <cgharibo at usa.net>
wrote:
> > > 
> > > I’d like to provide a follow up to engine cutting off during
acceleration problem. 
> > > 
> > > It only happens when warm. 
> > > I changed the TPS and this did not help. 
> > > Disconnecting the knock sensors did not help. 
> > > 
> > > Any other thoughts?
> > > 
> > > Thank you. 
> > > 
> > > On Jul 29, 2018, at 9:57 PM, Wylie Bean <theringmeister at triad.rr.com>
wrote:
> > > 
> > > 
> > > > Sent: 25 July 2018 22:14
> > > > To: quattro at audifans.com; 20v at lists.20v.org
> > > > Subject: [20v] ‘91 coupe hesitates on acceleration
> > > > 
> > > > I have a ‘91 coupe with 243k miles that has developed hesitation
during
> > > > 
> > > acceleration. It feels like the fuel cuts off for half a second while I
am
> > > accelerating or sometimes even at idle. The car stalls during turns at
times.
> > > What could be causing this?
> > > 
> > > > 
> > > > The injectors were changed to 034 at about 130k miles. The plugs, air
> > > > 
> > > filter, fuel filter are new at 240k miles.
> > > 
> > > > 
> > > > Fuel pump? Fuel pressure? Bad injectors?
> > > > 
> > > > CG
> > > > ______________________________________
> > > > 
> > > _______________________________________________
> > > 20v mailing list
> > > 20v at lists.20v.org
> > > http://lists.20v.org/listinfo.cgi/20v-20v.org
> > > 
> > > 
> > > 
> > 
> > 
> >  Peter Schulz
> > 1990 Audi CQ Pearl White
> > 1991 Audi CQ Silver
> > 1993 Audi S4 Black
> > 1995 Audi S6 Cashmere
> > 1995 Audi S6 Avant Silver
> > 2001 Audi A4 Q Black
> > 
> > 
> > 
> > 
> >  
> >  
> > 
> > 
> > 
> > 
> > 
>