In-car fumes

[Louis-Alain Richard]

If it is the heater core, then, a few hours after the car is stopped, the
pressure in the overflow tank should be nil. You can put your hand on the
top rad hose (engine cooled) and feel if it is still pressurized, and then
open the reservoir cap to hear if there is still pressure in there.

Louis-Alain

-----Message d'origine-----
De : quattro-bounces at audifans.com [mailto:quattro-bounces at audifans.com] De
la part de victor norman
Envoyé : 7 février 2008 16:12
À : quattro at audifans.com
Objet : In-car fumes

Hi - subject is a 2000 A4 Quattro. Problem is fumes in the car, not
particularly strong but enough to make the wife complain. Hard to pin down
exactly what they smell of, certainly not like (burning) coolant but since
it's more obvious when the heater/fan is on I'm thinking it's a very slow
leak in the heater core. Not getting any windshield fogging nor any obvious
drop in level in the coolant overflow reservoir.
I guess I have two questions - is it possible to look at the heater core
without tearing the dash apart and can anyone recommend a MILD stopleak
product?
Make that three questions - if it's not the heater core any suggestions on
what else it could be?

Thanks

Vic Norman 2000 A4