I have a 2003 F-150 5.4, and had recently changed all 8 ignition coils and plugs. I installed E3 spark plugs, and Granatelli 20,000v coils. After the parts were changed I got a reading of EGR Insufficient Flow. Is this because of the upgrade to the ignition system, or could I have possibly damaged something during the install?
Your egr may have stuck open. If it does it again make sure the valve on teh egr is clean.
February, 20, 2012 AT 9:09 PM
I appreciate that. I took the connection on the top of the EGR off and covered the valve with my finger, and it made no difference. From what I was told it should have idled down or stalled. Is that correct?
February, 20, 2012 AT 9:12 PM
Ya it should have but things don't always work like they are supposed to
February, 20, 2012 AT 9:13 PM
I heard that. Thanks man
June, 2, 2012 AT 11:20 PM
Low flow codes on a ford are usually caused by one of two possibilities. They either get the passage in the intake plugged up with carbon or they have a bad DPFE sensor. Both very common.