[Biturbos4] Some words on K03 destruction (Was: 2000 S4 Running Hot)

Grant gfl1 at optonline.net
Tue Aug 30 21:24:46 EDT 2005

Twice I've also found out, the hard way, that audi has a fail-safe 
system.  They have two oil pressure sensors.  The light comes on if 1) 
they show low pressure, 2) they show no signal, or 3) they disagree by 
mroe than x%.

So as they drift out of calibration, guess what can happen?

On Aug 30, 2005, at 12:24 PM, costco wrote:

>> Thanks! I'm even more nervous now becasue that oil light came on when 
>> I
>> was stuck in traffic and the car started to heat up. It honked at me 4
>> or 5 times...but then when the car got cooler, it stopped. It hasn't
>> beeped or lit up since then.
> Which oil light came on? There are two .. low oil level, and low oil
> pressure. Pushing the diag button on the left of the instrument cluster
> will cycle through all the pictograms and maybe you can remember which 
> one
> it was?
> I had the low oil level light go on randomly about 5 times in 96k miles
> that I owned my S4. Each time I'd pull over immediately and check the 
> oil
> level. It was fine every time. This is a rare problem, it's most often 
> the
> oil level sensor itself bugging out. For me it happened so rarely I 
> never
> bothered to try and fix it. It DID produce some stress the first time I
> saw it. But after that, all was fine.
> Generally you can tell when there is low/no oil pressure: the
> hydraulically actuated chain tensioners in each cylinder head will 
> start
> making an extremely loud rattling sound, much like what you hear when 
> you
> first start just about any audi engine if it's sat for more than a 
> couple
> of weeks. The sound could best be described as someone pouring a 
> handful
> of bb's into an empty coffee can.
> - Keman

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