Beside the obvious visual check of the two hoses that connect the two ports on the EGR pipe, a scan tool (in my case an old laptop with OBD-2.com software) the Ford manual has a test you do that actually lets you read or look for a certain voltages.
Actully the PCM is doing it, the Scan tool is only part of the equation it sets up the PCM to do the test and gives a read out.
Something like that right Mr. Pappas?
George helped me chase mine down last year, nope, hmmmmmm just this spring I finally got it to totally fail.
This is one time I'm glad I invested in Alex Pepers OBD II device and software. It's almost a necessity with vehicles now. You can waste allot of money and time, still takes me allot of time and money but then I'm trying to train myself. I fiqure in 10 more years I might get it mastered, but then the Mystique will be 15 years old. Then I'll have to start all over. But then that's what a car buff does.
Paul
