Mechanics

A SUDDEN CODE OF EGR INSUFFICIENT FLOW

2003 Ford F-150 • 78,700 miles

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?
Avatar
Quinzi99
February 20, 2012.



Your egr may have stuck open. If it does it again make sure the valve on teh egr is clean.

Hmac300
Feb 20, 2012.
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?

Tiny
Quinzi99
Feb 20, 2012.
Ya it should have but things don't always work like they are supposed to

Hmac300
Feb 20, 2012.
I heard that. Thanks man

Tiny
Quinzi99
Feb 20, 2012.
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.

Wrenchtech
Jun 2, 2012.