A noise...help

[Centori]

Hey all, question when shutting the car off there is this pfffttt noise that comes from the upper rear area of the engine... it always starts fine and runs perfactly but that noise persists.... Any ideas of what it could be? Oh it's a '96

 

[Steve Dionne]

I have the same noise. I think it's just the climate control shutting the vent. I am sure that someone else will chime in with the proper answer.