Re: cooling fan run-on after shutoff - C-GT

["Rick H. Louie" <rlouie@usa.net>]

Ken wrote:
> 
> I never noticed my cooling fan coming on after turning the ignition off
> before.  I think this is my first summer w/the car.  Memory's a bit
> fuzzy!
> 
> Is it really necessary?  Is there a cure if not?  It's bad enough my
> charging system is on the weak side, then I gotta run the fan when the
> engine's not even on?
> 
> I realize (or have heard) that the engine/water temp actually climbs for
> a while immediately after shutdown.
> 
> Ken
> --
> |------------->Tolerate the freedom of others or lose
> yours!<-------------|
> | 86 GT <Schrick/Borla/K+N/AZEV/ABT>, 85 4ksq <waiting for turbo>, 94
> SL2 |

I didn't realize that the coupes got the after run fan also.  My '84
does not have the after run fan, and I have never had a problem with the
car.  I know that my mom's '84 5K has a hard start problem especially
after a short shutdown on a hot day.  The '84 and '85 5K's did not have
the after run fan.  The fuel sits in the injector area and since it is
near the hood of the car, on a hot day, the fuel tends to keep heating
up to boiling and then causing a vaporizing effect.  So when you try to
start the car back up, the fuel is junk and thus a hard start.  In '86
the 5K series got the after run fan which basically eliminated the bad
fuel problem.

Maybe Audi just did an across the board change to the fan units in the
2.2l's, by placing the after run fan.  I know that you can retrofit the
after run fan into the '84 and '85' 5K's but there are some
considerations, such as an early burn out of the fan.

HTH
-- 
** God Bless! **
Rick H. Louie
rlouie@usa.net
1984 Coupe GT - Zermatt Silver, 130K, New Custom FF Exhaust