turbo coolant pump

[isham-research.freeserve.co.uk at pop.pol.net.uk]

> The pump uses magnetic coupling between the motor and impeller. The problem
> is, there's lot of small metal/rust particles flowing with the coolant.
> This crud sticks to the impeller (as it has a magnet inside) and finally
> causes the impeller to seize. It is impossible to clean this out, because
> you can't disasseble the plastic impeller housing without cracking it
> (BTDT). You can prolong the pump lifespan by flushing the cooling system
> regularely. I was also thinking about tie-wrapping couple of magnets to the
> inlet hose, so the crud doesn't flow into the pump. When the impeller
> seizes, the afterrun fan starts to run for 20 minutes (time limit set in
> the fan controller - my post on how to modify it is somewhere in the
> archives) every time it engages, which usually causes battery rundown
> problems.

Yup.  I was wondering whether it might be worthwhile to drop a magnet
into the bottom of the radiator, as recommended a while back for the
hydraulic fluid reservoir.

--
 Phil Payne
 UK Audi quattro Owners Club
 http://www.isham-research.freeserve.co.uk/quattro
 Phone +44 7785 302803   Fax: +44 7785 309674