JEEP LIBERTY NOISE

When I Start The Jeep It Makes A Knocking Noise And Can Feel It Under The Gas Pedal. When I Accelerate You Can Hear The Knocking Get Louder...

There Is A Squeaking Coming From The Back Of The Car At 45-65 Mph. I Have Replaced The Rotors And Put New Brakes On It. It Stops When I Put...