[A4] Brakes & Overheating problem

Richard Hurt rnhurt at gmail.com
Fri Sep 30 17:37:40 EDT 2005

Also, to check your fan operation, start the car, turn the A/C on and open
the hood. The engine fan should be spinning very fast sucking lots of
through the radiator. If it doesn't, it could be a number of things
including electronic failure of some type or the viscus coupling (listed

Just a word of caution: never, ever stick your hand in the engine fan of any
car whether it's on or not!! These eclectic fans can come on with no notice
even without the key in the ignition!


On 9/30/05, Pbadore at aol.com <Pbadore at aol.com> wrote:
> For the over heating problem, assuming that your A4 does not have a low
> coolant level,
> you should check the condition of the mechanical fan viscous coupling.
> With a hot engine and the engine not running if the fan spins easily with
> no resistance then the coupling has failed which does not permit the fan
> to
> rotate correctly and pull cooling air through the radiator. For the brake
> drag problem, assuming no faults codes, check the rear brake caliper
> carriers and
> sliding pins for seizure-- a very common problem. Audi should have the
> rear
> brake caliper carriers and pins as a regular maintenance item for cleaning
> and
> relubrication at least once a year. But Audis cost so much for dealer
> service
> I doubt that they would consider my suggestion even though I once worked
> with their US service engineering manger.
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