Jeep Cherokee Engine Vacuum Leak

Brakes Problem 1999 Jeep Cherokee 6 Cyl Four Wheel Drive Automatic When I Release The Brake Pedal I Hear A Vacuum Leak For Several...

I Have A Bad Vacuum Leak At The Boot On The Brake Pedal Rod Is There A Seal I Can Replace Or Do I Need To Replace The Power Booster ?...

When I Have My Heater Or Air On It Will Only Blow Out Of The Defrost Vent And Not The Dash Vents. Could This Be A Vacuum Leak?

My 4 Wd Keeps Kicking In And Out Or Sometimes Wont Even Enguage. Some Times I Get A Hard Jump When In 2 Wd Keeping A Constant Speed At 45mph...