Sorry I forgot to say that the first thing I did was replace the o2 sensor then reset the computer by taking out both ecm fuses and unhooking the battery for 12 hrs. Then I replaced the plugs and wires. and from what I've been able to find on here the egr valve is in the center behind the throttle body I found a little plastic piece with a filter in it there so I cleaned out that filter with air. Any other ideas?????