Transmission Woes
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Senior User
Joined: Jan 2002
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From: Milton Canada
Transmission Woes
2003 F-150 Supercrew 4wd with the 5.4 Triton with just over 200,000 km (app 120,000 miles) on the odometer. Recently I have noticed some odd response from this truck at highway speed. This doesn't occur often or regularly but is quite shocking when it does happen. A rather loud thump and the truck almost feels like it jumps. Then all seems normal again. I noticed last night it seemed to happen when I was in cruise control and the truck had to kick-down a gear to climb a grade. My wife told me she most commonly had it occur at around 80 kph (45 mph). I am thinking it is time to visit the transmission shop but was hoping some of you might be able to shed a little light on this beforehand.
Thanks for any help.
Robert
Thanks for any help.
Robert
Posting Guru
Joined: Mar 2009
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From: Montague, NJ
does it happen out of the blue or just when you hit the gas some more? it happens when it kicks down? sounds like whats wrong with mine. i think its my TQ but i dont know. could be the trannys shot too.
Elder User
Joined: Jan 2008
Posts: 589
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From: Stockton Ca.
Don't know about the 03 model but when my 97 misfired before turning on the CEL I thought I had a trans problem, don't know why these trucks go ape-**** from a misfire ...
Oh and it was most common at 40 to 45 mph.
Oh and it was most common at 40 to 45 mph.
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Senior User
Joined: Jan 2002
Posts: 172
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From: Milton Canada
I have had to change one COP, but ..... I am embarassed to say the plugs are definitely overdue for a change. I tend to spend more time playing with the Rumblefish (my 78) than this truck. I'll try that. Thanks for the tip.
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