Originally posted by auiotour:
As I am driving, i miss the gear the the rpms sky rocket to about 6k. POW I see the Check Engine Light come on.



6k does not qualify as skyrocketing.

Maybe you should check the exhaust backpressure. If you have high backpressure it will blow off the DPFE hoses and possibly damage the DPFE, giving you a P1405 or P1401. If the engine does not pull like a scalded dog at 6k you have backpressure.

You also need to check the rest of the EGR system. Manually apply vacuum to the EGR valve. If the valve opens and the passages are clear, the engine will almost stall. First time I cleaned mine I missed some crud in the internal passage in the UIM that goes all the way over to the EGR valve.

P0402 EGR Flow Excessive at Idle is usually a sticking EGR valve or a leaky EVR. The EVR is between the coil pack and the IAC.

"Those who cannot remember the past are condemned to repeat it" -George Santayana