p0354 misfire
Thread Starter
|
New User
Joined: Feb 2008
Posts: 4
Likes: 0
p0354 misfire
2003 5.4 f250. rainy day, engine started running with miss, check engine light came on and code is p0354. miss fire in #4. I changed all the plugs and #4 was dirty. started engine and still missing. while running I pulled the connector off each coil one-at-a-time. #4 makes no difference. switched coils from #1 to #4. tried pulling connectors again. #4 still not firing. put volt meter on connector with key on "on", no voltage on either side (or pin), but I see voltage on one side of other 7 coil connectors. I think that the coil is not getting what it needs from the wiring to the coil. how do I fix this?
New User
Joined: Jan 2012
Posts: 21
Likes: 0
Blast from the past...
Having the same issue with one of mine, p0354 code, replaced the coil with a new one....no change. Swaped the coil with a known good one... No change.
I'm suspecting a signal issue going to the coil. Where do I start?
Having the same issue with one of mine, p0354 code, replaced the coil with a new one....no change. Swaped the coil with a known good one... No change.
I'm suspecting a signal issue going to the coil. Where do I start?
New User
Joined: Jan 2012
Posts: 21
Likes: 0
After 3 hours of trying different ideas, I started chasing wires and found a wire broke on the driver side about 2 ft from the computer.
FTE Leadership Emeritus
Joined: Sep 2000
Posts: 23,174
Likes: 1,678
From: Stephensville WI
Thread
Thread Starter
Forum
Replies
Last Post
1lrover1
2007 - 2014 Expedition & Navigator
25
Jul 2, 2022 07:39 PM
Flytyme69
1997 - 2006 Expedition & Navigator
1
Jun 4, 2010 12:21 AM
