Hi, I own a '93 Camaro Z28. When I shut off the engine, there is a sucking noise. It sounds almost like it is drawing air into the engine. This happens every time I shut the engine off. I don't know if this is normal or if there is a engine problem. It has 105K miles on it, but it runs fine. Some advice would be very helpful!
-Jason

 

Its your throttle body thats normal..........

 

Thanks for the info.