[s-cars] Squealing Heater Fan

[Keith Maddock]

Rolf wrote:
>Yup, def. check the little intake fan thingy, but more than likely it's the
>HVAC fan. Mine squeels when the outside temp drops below 15 degrees. I then
>typically hit the recirc. switch to draw warmer air in and sometimes that
>works. Otherwise i dont beleive you can access the bearings to lube them.
>You access the brushes however, but the noise wont typically come from
>there.

You can really diagnose if it is the HVAC squirrel cage fan or not by :

Turn on fan,
Getting some WD40,
Remove the big hose leading to the HVAC squirrel cage fan, ´
Dousing it with WD 40

In my case the fan shut right up, for a few months (the interior did smell 
like WD40 for a day, but that  bothered me less than the noisy fan).

A word of warning, I don't suggest you do this at the top of a freeway pass 
between Oklahoma and New Mexico in 110F weather.  For certain the red WD40 
squirter straw will get knocked off as you are spraying, sucked in the fan, 
then the fan will be even noisier than it was before, driving you nuts.  2 
hours of removal attempts will not work and your hands will be VERY 
sore.  Don't ask how I know that....


Cheers,
Keith

keith at maddock.com    http://keith.maddock.com/

93 S4 (mit RS2 + BR upgrades) Portland OR
95 968CS (Ring Tool + Daily Driver) Koblenz, DE
1/8 89 GTI  16V (Spare Ring Toy)  Nürburg, DE