[V8] ABH using lots of fuel!

[Dag Bøsterud]

When the timing belt was replaced, VW special tools were used for this. The 
timing is correct.

I didn't say the fault memory is empty, but the only fault I got was that 
the oxygen sensor was out of range,
and I replaced it just to be sure.

I'll look into this later this week.

Again; thanks for all your help.

/Dag
92 V8 4.2
..the miles...


----- Original Message ----- 
From: "Bastian Preindl" <bastian at preindl.net>
To: "Dag Bøsterud" <dag.boesterud at consulgranada.net>
Cc: <V8 at audifans.com>
Sent: Monday, June 09, 2008 9:17 PM
Subject: Re: [V8] ABH using lots of fuel!


> Hi,
>
> a shame that it comes into my mind so late, but you've also two sensor's 
> for the intake air: The intake air temperature sensor and the intake air 
> flow sensor. Both can cause similar symptoms. I know, this is a struggle, 
> but if you say the fault memory is empty, you have no real choices left. 
> Well, also worth a trial could be to measure the signal lines for the 
> temperature sensor you've just replaced - perhaps you've a problem 
> there... the intake air flow sensor usually also causes a very unsmooth 
> run of the engine, so I'd start with the intake air temperature sensor.
> Another possibility could be the knock sensors, so the intake air sensor's 
> are not the last chance... I assume that the timing belt setting is 
> correct and double-checked...
>
> Bastian
>
> Dag Bøsterud schrieb:
>> I changed the engine temperature sensor today. There's one in the back of 
>> the right cylinder head that sends a signal to the ECU. There was no 
>> difference whatsoever. The car runs just as rich. The spark plugs are 
>> black, and the old oxygen sensor was all black, not the normal 
>> greyish-brownish color you'd expect.
>>
>> The engine runs smooth, but very rich... I really don't know what could 
>> cause this.
>>
>
>
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