05 Expy..OD issue?
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Senior User
Joined: Feb 2005
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05 Expy..OD issue?
2005 Expy 5.4L around 100k miles, 2wd.
While in OD and a load on the engine..say going up a slight incline.. the truck will buck. It only does it in OD with a slight load on the engine. Normal cruising does not do this. Seems like the gear is popping out, it will continue to do this until it down shifts and does not do it in any other gear other than OD.
Ideas? Will be taking to the shop once tax money comes back in a few weeks.
B.
While in OD and a load on the engine..say going up a slight incline.. the truck will buck. It only does it in OD with a slight load on the engine. Normal cruising does not do this. Seems like the gear is popping out, it will continue to do this until it down shifts and does not do it in any other gear other than OD.
Ideas? Will be taking to the shop once tax money comes back in a few weeks.
B.
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Senior User
Joined: Feb 2005
Posts: 428
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Maybe found my answer.. plugs have never been done on this truck to my knowledge.
https://www.ford-trucks.com/forums/1...overdrive.html
B.
https://www.ford-trucks.com/forums/1...overdrive.html
B.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,714
Likes: 2,639
From: SE Florida
It is definitely the ignition system. It could be spark plugs, boots, or ignition coils. There is no way that it is the transmission. I've seen many, many trucks do this, and every single one was ignition.
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50man
1997 - 2006 Expedition & Navigator
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Feb 14, 2013 06:29 PM
