[V6-12v] all quiet on the AUDI Front

[clive young]

James

its too bad no one on the list lives close to you, about a day of swapping
parts would have your problem fixed pdq. I have been wondering now about
your ignition coils and stuff. A good bug. So when did it start ? was it
gradual or sudden ?

Clive
----- Original Message ----- 
From: <James4ihl at aol.com>
To: <tomchr at ee.washington.edu>; <James4ihl at aol.com>; <v6-12v at audifans.com>
Sent: Wednesday, March 24, 2004 6:12 AM
Subject: Re: [V6-12v] all quiet on the AUDI Front


> Tom --
>
> Thanks for all that info on electrical testing procedures, etc. Very
> informative! I've cut/pasted the last paragraph however, because it's
strange that
> yesterday, while driving around, I thought pretty much the same thing
myself - I
> wonder if it's anything to do with a dodgy contact in the throttle pot -
so
> it's interesting you'd had a thought on the same lines given the nature of
the
> problem. It seems to fit because:
> a) it seems to occur more or less at the same point on pressing down the
> throttle each time (neither light, nor heavy, but on the transition
between the
> two.
> b) it happens more when cold, or when the car has been idling (so there's
no
> current going through that part of the pot to clean it temporarily, or for
the
> voltage to re-establish a connection.
> c) it occurs less and less the more you drive, particularly if you're
> accellerating using the whole range of movement of the throttle a lot,
which would
> suggest it could be 'cleaning off' the pot as you drive, or similar.
>
> So yeah, good thinking... is there a way of 'cleaning' those pots though,
or
> do you just replace them at this age?
>
> Cheers
> James
> In a message dated 22/3/04 11:59:26 pm, tomchr at ee.washington.edu writes:
>
>
> > I wonder if your problem could be caused by dirt in the throttle
> > potentiometer... When pots fail they'll typically open intermittently on
> > the wiper connection, but if you turn the shaft back and forth, they
regain
> > contact. It's a longshot, but it does make sense based on your
description
> > of the problem... But I've never cured a hesitation problem so I'm
guessing
> > here.
> >
> > Tom
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