P5 hissing after shutoff

aross1974

Member
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2001 Mazda Protege LX 2.0
Hi all,

Another funky question. Car makes this hissing sound several minutes after it is shut off. Sounds like steam being let out but I never see anything leaking out from under the car or anything in the engine compartment. Not sure if its the cooling system or the HVAC system doing this. Thoughts?

Thanks again.
 
Mine does too, I'm assuming it's condensation or something dropping on top the headers/exhaust.. not sure.
 
I hear a similar sound in mine. it lasts for maybe 10 seconds and stops. it could be pressure in the AC system equalizing throughout the system.
 
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