Hissing noise behind dash after engine starts. Heater controls have no effect on noise but heater functions appear normal. No apparent moisture or visual from heater core. Core appears to be OK.
Hissing continues for 10 seconds after ignition is turned off.
I thought damper acuator hose or other vacuum items?
Please advise.
Thank you
Hissing continues for 10 seconds after ignition is turned off.
I thought damper acuator hose or other vacuum items?
Please advise.
Thank you
Sep 7, 2010 at 11:04 AM