P0402 could be a DPFE sensor (aka EGR backpressure transducer) issue too.

Read this for a way to test it.
http://www.autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/1b/ca/1e/0900823d801bca1e.jsp

You can also purchase from www.teamfordparts.com

PRESSURE FEEDBACK SENSOR, Contour, Mystique, 2.5L 95-00 CEG Price $56.10




Last edited by Tony2005; 06/07/06 07:09 PM.
"Always do the cheap and easy ones first." 1996 V6 ATX 96K miles