2001 ford ranger xlt 4.0l

[superscout73]

My ck engine light keeps coming up. It reads as EGR Flow insufficient. I changed the Egr Valve. What else can it be??? Where can i start???

 

[dogfriend]

Check this thread:

http://www.explorerforum.com/forums/showthread.php?t=92263&highlight=EGR

It might just be a leaking vac line or it might be the DPFE sensor.