Question about 2000 Audi A8

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Audi a8 temp,high

Hi mate i have audi A8 on P 1996 its a 4.2 quattro basically i am being told by the on board computer and water temp sens is saying temp is of the chart showing it overheating but i have checked the cooling system and there are no signs of overheating no pressure in the first guess is a sensor dol you know which one and where its located. thankyou

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Temp sensor is at the right hand rear of the engine (left side when looking from the front). You can get to it from above without too much issue.
They regularly fail and are a cheap replacement part. They don't throw diagnostic codes. Go genuine, or Bosch.

To replace, you pull the retaining clip out to the rear (be careful, they get dropped easily). The sensor itself pulls out, but will probably be stuck in slightly, so don't damage the cars plug pulling it out (disconnect plug first).
Make sure the o-ring comes out too, or go fishing for it (they can be brittle and break with age). New sensor will come with a new o-ring.

Posted on Oct 02, 2017


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There should be a drain hole or tube that leads out of the car. Find it and clean it out. (wet/dry shop vac?)
Don't poke too sharp of things into it, or you might damage something, though.

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It will be located under a cover next to the engine intake for coolant.

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