Hi Guys,

On my way into work this morning, my 06 with the 5.4 started running very rough/shaking at low rpms. I could kick it out of overdrive and it would smooth out and seemingly be fine at higher rpms.

This worked out for a couple of miles until the truck just died on me completely. The Edge is showing po351, 352, 353......358 codes. Ignition coil Primary/Secondary circuit fault on every cylinder.

Has anyone run into a situation like this before? I'm thinking its unlikely that every coil failed simultaneously....computer?

When I try to start the truck, it will try to hit on a cylinder or two, but will not run.

Any adice would be greatly appreciated!

 

You could use the edge to program the truck back to stock to see if it was just a glitch in the computer. If that clears is up, then power program it again. Just something quick you could try

 

Quick update for the future reference of others.

Found the problem, turned out to be #5 coil wire rubbed through on the bracket that holds the power steering reservoir.

The 12v source to all of the coils was dead shorting intermittantly (causing the circuit codes to be thrown on all cylinders) until it finally blew the 15 amp fuse for the coils causing the truck to quit.

Fixed the wire, new fuse, and had to replace the coil that had the shorted wire because it got smoked.

All is well again.

FYI, the fuse for the coils also sends power to a shift solenoid, so if you get a shorted coil wire, it can throw shift solenoid/line pressure codes as well!

 

Good work, 05Turbo. Glad you found the problem.