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Originally Posted by sreilly77
I have replaced the EGR Valve, EGR Tube, DPFE Sensor, and EGR Solinoid just recently due to my CEL coming on. I ran the code and it said "EGR Flow Insufficient." I cleaned the carbon out of the system thoroughly and I still get the code after about two cycles of driving. Did I forget to replace something else? The car is running so much better yet I am still getting the CEL. I should also mention that there is no vacuum leak and the valve opens when it is supposed to. I'm baffled. I don't get any misfire, knocking, pinging, or anything. The car runs really good!
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use a vac pump and open the valve while, at idle, the car should stumble if it does that means enough flow and your problem is electrical, perhaps maybe the hoses running to the DPFE.