Engine missing on acceleration
Thread Starter
|
Elder User
Joined: Aug 2004
Posts: 551
Likes: 1
Engine missing on acceleration
My 98 Exp 5.4L 4x4 with 110k miles misses on hard acceleration. New plugs & air, pvc, and fuel filter were installed within the last 30k miles. No fault code is being displayed and when scanning while driving, no pending code is captured. Any suggestions?
Thanks,
Stephen
Thanks,
Stephen
Freshman User
Joined: Feb 2004
Posts: 40
Likes: 0
From: Vancouver Wa
sounds like a (COP) coil over plug problem . I had the same and also had no code. I found a bad COP with a torn boot. Also only use autolite single platinum tiped plugs. AP103 Other brands don't seem to work as well.
Elder User
Joined: Mar 2003
Posts: 689
Likes: 1
From: VA
Dang, I didn't realize how enthusiastic you guys are. Buying your own code readers, and all. 
I've been using as many Ford parts as I can, and mine is done well at almost 130K miles.
I've been using as many Ford parts as I can, and mine is done well at almost 130K miles.
Last edited by 2000Expy; Dec 17, 2006 at 09:00 AM.
Thread Starter
|
Elder User
Joined: Aug 2004
Posts: 551
Likes: 1
I figured the money for the code reader is a worth while investment. I plan on keeping the expy well pass the point where I'm too feeble to drive. But, I have to drop another $60 to download the full scan program. With 112,000 on the beast, it probably wouldn't hurt just to replace all the cops. I've got a cross country road trip in a week and I don't want to take any chances. If I go the replace all cops route, I will definately buy them from the dealer.
Trending Topics
Laughing Gas
Joined: Jun 2003
Posts: 1,166
Likes: 0
From: Chino, California
I am putting my money on the COP's. It has happened to me exactly the same way a few times! 5.4 and 6.8.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Hotshot
Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
For the price of a COP or 2 I'd take the truck to your dealer and have them run a cylinder power balance test on it. That can be done on the road while it's missing. Usually the cylinder(s) with the problem shows up easily.
I just can't see replacing all the COPs when only 1 has a problem.
I just can't see replacing all the COPs when only 1 has a problem.
Thread Starter
|
Elder User
Joined: Aug 2004
Posts: 551
Likes: 1
Racerguy you're right. I would much rather know which cop is bad then have to replace all of them. But, I'm taking this baby cross country next week and would rather shall out the bucks to buy me peace of mind.
Thread
Thread Starter
Forum
Replies
Last Post
01expedownr
1997 - 2006 Expedition & Navigator
15
Jan 11, 2008 09:06 AM
psu1xj
1997 - 2006 Expedition & Navigator
6
Aug 30, 2007 07:27 AM
