2002 tuarus idles rough

[rednex24]

My 2002 tuarus sel idles rough when idling,whether its parked or in gear. I can hear a vacuum leak but cannot locate it

[brokenantimatter]

I leak that makes a squeal or a screech?
Have you recently had ignition problems or smoke from under the hood? We have seen this problem pop-up in about 10 different DOHC Taurii in the past two months. (60-80k mile region). I am not sure what the specific hose is but it is located below the throttle body and has a tee connector. On all of them but 2 it was the top hose.

[rednex24]

There is no smoke or squeal at all,just the sound of sucking air when it is idle or in gear at a stop.It has a bit of a chug when sitting at a stop with the car in gear.

[brokenantimatter]

Hmmm?
Check the air intake for holes or lose hoses.

[rednex24]

Have already checked that!! It seems to be somewhere at the back end of the engine.

[yotermanic]

Be sure to check the hoses on the PCV system, they're always bad about rotting through.

[brokenantimatter]

Check the air intake hoses below the throttle body....the ones that look like they would going toward the tranny or the actual engine block.