help! typ44: exhaust smell when heater is on

[Kneale Brownson]

In addition to Cobram's list of things to check, make sure your seal at the
top of the firewall (on the front lip of the rain diverter that covers the
HVAC well) is intact. 

At 01:01 PM 1/30/2004 -0500, cobram at juno.com wrote:
>The heater box is sealed, there is an accordion hose that goes over to
>the evaporator and fresh air intake.  It's all located under the cowl
>shroud.  Take 2 minutes, remove the cowl cover and see if anything
>strange is going on.  While you're there clean out the leaves, acorns and
>?? that's under there.
>
>A few guesses, without looking at the car:
>
>1. You have an oil leak which is burning off after a while and the fumes
>are making their way into the cabin.  "Oil" in this case covers hydraulic
>fluid, brake fluid, coolant and motor oil. BTDT.
>
>2. Might be the smell of burning coolant, could be bad heater core,
>heater hose loose or leaking, or heater valve.  BTDT
>
>3. Your blower motor may be on it's way out, and what you're smelling is
>smoke coming off the electricicles.  A blower motor on it's way out will
>smell like the protective coating burning off a new exhaust component.  
>BTDT