I just had this whole thing replaced not even a month ago and it cost me $389 (4 hours of labor to remove the bottom end of an EGR valve tube). And since then it's had a check engine light problem.
Now I thought it was the 02 Sensor but it turns out it wasn't so I returned the Bosch sensor I bought and had the Check Engine light re-tested using a hand held OBD II scanner both over at Autozone and Advance Auto.
Pulled a code P0401 which was for the EGR system.
I don't get it these parts are brand new: The EGR valve from AutoZone and the EGR tube from a local Ford Dealer.
And now it's giving me problems?!
Heres the problem as listed by Autzone:
EGR system fault (Exhaust Gas Recirculation) explanation.
The ECM has detected too little flow on the EGR system
1. - Blocked passage on EGR system
2. - Failed EGR valve
3. - EGR Solenoid faulty
4. - Failed EGR pressure sensor where applicable
5 - Failed EGR position sensor where applicable
Now here's another weird part, where the bottom part of the EGR tube bolts up to the cast iron exhaust manifold, I saw that the place that worked on my truck didn't use the supplied bolt that came with the new EGR tube..instead they use a bolt and two washers to secure it in place.
Would that cause the ECM to go haywire? I have the OEM bolt that came with the new tube sitting on my t.v set in my bedroom, and it's making me think if that's the ultimate root of the problem.
I guess what I failed to ask was ; what would cause the ultimate problem for this premature failure..I mean these parts are brand new but it just baffles me that it's doing this.