on my 94 z28 inside the left front wheel well there is a square shaped electrical device with a rubber hose coming out the back of it it makes a sort of buzzing or kind of a hissing sound when i start the car after a few it shuts i know the sound is normal but what is this part ? what does it do? and if the plastic fitting where the hose is supposed to attach to it is broken how will that affect the car? can someone please help me out this is my first lt-1 and first camaro

 

Sounds like your AIR pump...

 

thanks for the pic but thats not it the part im talking about is inside the wheel well

 

From what you describe you are hearing and seeing, it sounds to me like the AIR pump (not saying you're wrong by any means). The air pump turns on on a cold start and sounds like a buzzing/wheezing/hissing sound and then turns off. It also has rubber hoses coming out of it that connect to the exhaust manifolds.

Maybe you're talking about the factory intake ducting? Intakes have been known to hiss and the airbox is near the front left wheel.

 

Is it in the "left front fender" looking from the driver's seat (normal way to describe left and right), or standing in front of the car? In the passenger side fender, near the horns, there is a vacuum reservoir for the heat/AC controls. It only has a single rubber hose connected to it, no wires, and it doesn't turn on and off.

Could this be it?

http://shbox.com/1/vacuum_tank.jpg

 

Driver side or passenger side??? RamAir95TA and Fred gave to two possiblilies?????

 

If you are sitting in the driver seat it is on the left either way it is inside the drivers side wheel well my girls 95 caprice also had the lt-1 and it made the same sound in my haynes book it says its called the purge control valve but they dont show any pictures of it but i know the air pump and thats not it

 

Heres a diagram from Shoebox's website... ????

http://shbox.com/1/devices.htm

 

"inside the drivers side wheel well".... does that mean between the plastic inner fender liner, and the sheet metal that forms shock tower? Is it near the three-line fuel/EVAP hose bundle that comes up under the rocker panel, and through the hole in the shock tower? Because my 94 has no parts of any kind inside the plastic fender liner, other than the three-line bundle.

The EVAP purge valve (solenoid) is on a bracket on the passenger side of the intake manifold.

 

yes it is between the plastic and sheetmetal in the same area as the bundle

 

Dude, you're gonna have to take some pictures because it's either the AIR pump, vacuum tank, or cruise control module.

 

ok ill take some and send em to you