#5 coil wiring issue found

Reply Subscribe

Thread Tools

Search this Thread

May 6, 2012 | 04:20 PM

mbw919

Thread Starter

Mountain Pass

Joined: Aug 2007

Posts: 101

Likes: 7

From: Charlevoix, MI

#5 coil wiring issue found

Shortly after giving my '07 FX4 its annual under the hood washing, it started running rough and then gave a P0355 code. I figured it was water in the connection to the #5 coil. It wasn't. I found the wires leading to #5 coil had been rubbing against the underside of the bracket that holds the power steering fluid reservoir. One of the wires had completely worn through. I repaired it and all is well, but thought I would share in case others experience this. I would suggest all 5.4 owners check the #5 coil wiring for wear in this area.

May 6, 2012 | 06:49 PM

Papa Tiger

Fleet Owner

Joined: Mar 2012

Posts: 26,155

Likes: 4,149

From: Near Cal. Avenue

nice post mbw919. Many will breath a sigh knowing of your fix. LOL

May 7, 2012 | 09:24 PM

Steve_Uzi

Laughing Gas

Joined: Mar 2000

Posts: 1,191

Likes: 0

From: USA

Quote:

Originally Posted by mbw919

Funny you mention #5. When I replacing the Coil Pack on Plug #5 I noticed an "Extra" wire going to it... I guess when they did my Remote start install they tapped into the positive wire going to Plug #5 for some reason.. the idiots didn't even solder it.. simply sliced back some installation and wrapped the new wire around it... Needless to say.. I solder it and repaired it correctly! Though that wasn't the cause of my mis-fire.. it was a clogged CAT..