chirping noise after engine shutdown

After I shut the engine off there is a "chirping" or "eeep" sound coming from what looks to be the VSV (EVAP) box on the right side of engine bay, upper portion. Its the black box with all the vacuum lines going to it... If I disconnect one of the fatter vacuum lines, the noise stops until I reconnect it again. It will emit this noise for about 15 minutes after engine shutoff. Anyone else have this happen? Is this normal?

 

bump...

anyone? I cant be the only one that has ever had this issue.. but maybe I am.

 

the flange inside the valve may be going bad and leaking . . . causing it to make a high pitch squeel

 

That black box looks expensive..

 

if thats what it is go find a junk yard . . . or you would be suprised at how cheap most toyota parts are . . . (not from the dealer)

 

yeah...the aftermarket has a lot to offer. I prefer the oem stuff though.. so a junkyard would be a good place to look.

 

i had the same problem dude still have it...

my dad bought the truck in 97 brand new with 2 miles on it and had done it since then. I just say the truck is farting. nothing bad has happened so far

 

good to hear that... I think its kinda funny myself... "meep"... "meep"... I have chuckled several times. Its lke the Road Runner is under my hood... lol.

 

lol yeah when will (tacomaman06) and jeff (tigerfan00) were working on my truck it was doing it... they were like wtf is that. I said dont worry my truck just ate and now it has gas lol i wouldnt worry about it dude

oh and dont take it to the dealer to find out what it is cause they will try to charge an arm and a leg to find out what it is and then say they dont know what it is (happened to my dad)