Just purchased a 2001 escape XLT and have a code reading of P0402 EGR Valve !!!! What should I do ? 91,000 on motor...

SOURCE: I have a 2001 Ford Escape xlt V6 3.0L engine.. I

hope this helps,Tim:

http://www.obd-codes.com/p0401

SOURCE: 2002 Ford Escape (V6) P0401 P0402 nightmare

Sounds like you have a vacuum leak, a problem with the wiring, or a bad PCM. Check wiring for pinched, chafed, pierced, or broken wires. Make sure vacuum supply is good, and not collapsing when the vehicle is running. Beyond that, a trip to the dealer may be in order.

SOURCE: 2001 Ford Escape error code P0402

Ok here is the solution when I had the exact same problem with my 2001 Ford Escape:
Replace:

Idler air control valve
EGR vaccum sylenoid
EGR valve

I did all of this work myself (and as a girl it was not hard at all), it cost me around $170.00 for all of the parts, had it done in less than 2 hrs., erased the codes and have not had a problem since then! I hope this helps you out, cuz it sure would have helped me out when I encountered the same problem.

SOURCE: got code P1402 sum say it is EGR problem, but that

code 1402 EGR valve position sensor open or shorted, check the wires going to the sensor and the plug itself,hope this helps if not get back to me and we'll go from there

SOURCE: Error code P0402 2001 Ford Escape

This might sound crazy but it works with these Escapes most of the time. Go buy a can of Seafoam from your part store. With the engine off, disconnect the brake booster vacuum line and place it in the can of sea foam. Start your engine and keep your foot on the gas pedal and keep the RPM's around 2k.The vehicle is going to smoke like crazy for 10 minutes or so, when the smoke clears up for the most part, go drive it for a couple of miles and see if that helps. It cleans out the carbon buildup from you intake and sensors and takes care of that code you getting most of the time. OR, you purge canister needs to be replaced...