My 2002 Ford Escape's check engine light just won't go away. The code is P0402 EGR Flow Excessive. When I went to Auto Zone they gave me a list of things to change so I did. Changed all the vaccuum lines I could see, replaced the EGR valve, replaced the EGR sensor, replaced the EGR vaccuum solenoid, and now here I am with my light still on. I noticed a slight high pitched humming noise when the vehicle is on and when I accelerate it hums louder with the engine. Please help me if you could.
Apr 8, 2010 at 11:13 AM
