It's raining tonight. I parked my wet 2012 vert in our garage after a short drive (about 5-10 minutes) and put the Covercraft cover on. As I was walking away, I (actually my cat) noticed a quick hissing sound - like the sound of flicking water onto a fire. It was very brief. I waited, and the sound would happen again every 20 seconds or so. I thought maybe it was from water dripping down onto the engine somehow, or....? I checked the exhaust pipes, and they were cool. The hood was cool also. Any ideas on what would cause this hiss, and is it a problem?
Ordered 9/13/11 / Delivered 10/24/11: 2012 AT V6 premium convertible, Grabber Blue, Comfort Package, remote starter, rear camera My other car: 2003 Toyota Prius, 100K miles
I know exactly where's it's coming from. I've even taken a picture and illustrated it for you (I'm in a good mood ).
Water comes in through the cowl (blue top arrow) and funnels down into the drain (bottom circle/arrow) and drips right onto the steaming hot catalytic converter.
Why Ford designed a drain like this, I have no idea. If you go out to your car you'll see a little rubber drain in the same exact spot.
my subaru had the same thing above the down pipe. and it would steam like that. even better when I got a bigger aftermarket down pipe the rubber hose rubbed on the pipping and got burned it smelled awesome until I figured it out.