Well, obviously, there are no guarantees, but, if it won't hold
pressure, then it is leaking somewhere. If you cannot see evidence of
leakage under the hood, then it may be sufficient evidence to cause you
to look further into it.
One other alternate idea might be to disconnect the heater core and
flush it out with water to rid it of the anti-freeze and then run for a
bit with the heater core out of the system and see if the smell
disappears. I am not familiar with your particular car but if there is a
heater hose in and one coming out, one should be able to connect the two
hoses together under the hood and leave the heater core out of the loop.
Randy
On 24/04/2012 3:44 PM, andrew strasfogel wrote:
One other hint: The smell is intermittent and seems to get activated
when the ACC "clicks" to another mode or function. Does the ACC
switch between outside and recirculating air and if so, when?
And does everyone agree that a pressure test of the cooling system
would definitively either rule out or implicate a leak in the heater
core?
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