'06 A6 3.2 camshaft position sensor code

[Paul Caouette]

We just had this issue with our A4.   V6.....187000 miles.

The timing belt drives the exhaust cam and there is a chain from the
exhaust cam to the intake cam. The hydraulic mechanism allows for very
small change in valve timing of intake vs exhaust valves. Very slick
design. Ours had the plastic pads worn through and the chain was cutting
into the actuator...

We couldn't afford a new actuator and the labor    ($2000) so the mechanic
reluctantly replaced the plastic parts.....with no guarantee........he was
right!

Two days later the check engine light came on and we parked it.....

If you lose that chain you lose the engine.

Considering my options......

On Mon, Dec 3, 2012 at 8:39 PM, Cody Forbes <cody at 5000tq.com> wrote:

> VVT = Variable valve timing. It is operated by hydraulic solenoids and oil
> pressure fed actuators.
>
> I must apologize, that particular engine actually has a timing chain, not
> a belt. Given VAG's issues with the 4.2l v8 of similar vintage it's fair to
> say that there is a real possibility that a timing chain tensioner or guide
> rail has broken. Does it make any r4ttling noises at startup?
>
> -Cody Forbes (mobile)
>
> On Dec 3, 2012, at 8:35 PM, wadd-wadd at usa.net wrote:
>
> > What's VVT? How do I fix it? Is there any harm in driving it this way?
> >
> > Thanks.
> >
> > ------ Original Message ------
> > Received: Mon, 03 Dec 2012 08:15:49 PM EST
> > From: Cody Forbes <cody at 5000tq.com>
> > To: "wadd-wadd at usa.net" <wadd-wadd at usa.net>Cc: "<quattro at audifans.com>"
> > <quattro at audifans.com>
> > Subject: Re: '06 A6 3.2 camshaft position sensor code
> >
> >> Cam timing is likely off. Either failing VVT system of timing belt is
> loose
> > and/or jumped time.
> >>
> >> -Cody Forbes (mobile)
> >>
> >> On Dec 3, 2012, at 7:58 PM, wadd-wadd at usa.net wrote:
> >>
> >>> My A6 throws the camshaft position sensor code within a few mins of
> > starting
> >>> the engine. I've replaced both sensors without resolution.
> >>>
> >>> The car has 136k miles and runs well.
> >>>
> >>> Any other thoughts?
> >>>
> >>> Thanks!
> >>>
> >>> _______________________________________________
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> >
> >
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>



-- 
Paul Caouette
sv Wild Iris (V40-133)