Trumpet sound under truck after shutting off

Hey there gang,

I've got a 2007 Tacoma. When shutting off my truck recently, I have noticed that after about 5 minutes it makes a strange farting sound (or for the less crude, a trumpet playing a note that progressively gets higher until it dissipates) for ten seconds or so. Sometimes it does it twice. Doesn't seem like the fuel evap sound since that sounds more like a motor after a few hours, where this sounds more like an air leak immidietly after shutoff.

Any ideas?

 

Sound like the Evap to me.
Mine sounds like a horn.
Done it since I’ve owned it.

 

Mine just did that the other day. It only seems to happen when I overfill the gas tank (past the first time the pump shuts off) and if I don't drive far enough to burn off the extra.

Edit: mine's only done it twice since I've owned it.

 

Probably the leak detection pump running which is in the EVAP system. It's probably just starting to show it's age.

 

It’s a queef dude.. don’t make her feel bad for it it’s natural.

 

Lol

 

Last time I ran over a marching band, mine was making that sound for a solid week. It got more, and more faint, as the week went on, until it eventually stopped.

 

Airbrakes?

 

my '14 makes some weird noises in the garage....even long after shutdown.....


Fuel tank area.......dunno WTF it is.........?

 

Oddly enough, mine makes this sound whenever I get in it... (wishful thinking)