[V8] The saga continues !! Smokey V8

[Ingo Rautenberg]

Peter, have you tried disconnecting the temp sensor at the back of the right
cylinder head (by the distributor) to see if there is any change? Black and
sooty points to excessive unburnt fuel. In my experience (though not vast -
just had a lot of V8s), this has been due to faulty fpr, bad temp sensor or
(especially) bad wiring to the oxygen sensor. You may also want to (if you
haven't already) temporarily disconnect the oxygen sensor wiring at the plug
at the harness under the left side distributor to see if there is any
change. Beyond that, i really can't give any other advice regarding your
problem -- except there are few more things that come to mind: Bad mass
airflow sensor, bad air temp sensor (at front of engine) and faulty idle
stabilisor (though doubtful on that last one).

Good luck.

Ingo

On Mon, Sep 20, 2010 at 10:04 AM, Peter Littlewood <
littlepete_19 at hotmail.com> wrote:

>
> Hi Folks!
>
>
>
> Well I write this, dismayed and disillusioned as ever. Its the same  old
> story as ever. Very smelly black smoke and exsssive fuel use.
>
> This is what I have replaced so far !
>
> Fuel pressure regulator, Plugs, leads, rotors and caps. Lambda/ oxygen
> sensor (old one was giving a fixed reading of 0.45v and not switching?)
>
> Without having any form of manual for the V8 I've always had to rely on the
> internet and you guys for advice.
>
> Does anyone know what pin number on the ECU is the feedback from the
> Lambda? I suspect this now, as I remember when I still had my VAGCOM working
> it would come up with an error message something like "Low or intermitant
> voltage from oxygen sensor."
>
>
>
> Any other advice or suggestions will be gratefully accepted !!!
>
> I'll try anything !!!!
>
>
>
> Pete Littlewood
>
>
>
> 3.6 auto 1990 uk spec
>
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