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post #1 of 5 (permalink) Old 01-16-2011, 07:44 PM Thread Starter
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2001 F150 4 x 4 7700 series

I Have a 5.4 litre engine. The problem I am having is shutter in the drive train when I accelerate from 60 to 100 klm. What it feels like is the transmission is slipping from a millisecond, and this what causes the shutter throughout the drive line. You can feel the whole truck shake and feel it on the throttle pedal. The shutter will occur in both overdrive and drive, and in either two wheel drive and 4 wheel drive. I have had a friend of mine put a computer system on the truck and we took it for a drive and it showed the engine was working good, no codes showed up. I decided to replace the transmission with a rebuild and a new torque converter. The problem still persists just not as bad. I have taken the truck into the ford dealership and they tested all the pressures and shifting, it has all checked out ok. The truck has 150,000klms on it. This is just a guess - it seems like the transmission is loosing a signal or the signal is interrupted for a millisecond. What else might cause this? The transmission has the shutter in both winter and summer. I am not sure if it is the transmission or something in the drive line. I have it booked in for more tests next friday. I am looking for any information or feedback in which direction to go to get this problem fixed.
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post #2 of 5 (permalink) Old 01-16-2011, 10:29 PM
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coil pack ?

2007 F350 6.0L Ext cab short box 4x4
2000 F150 5.4L Reg cab short box 2wd
?? always looking for a new ford project !
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post #3 of 5 (permalink) Old 01-16-2011, 11:07 PM
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^^^^^^ i agree, sounds like a cop/plug issue.

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post #4 of 5 (permalink) Old 01-16-2011, 11:57 PM
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hard acceleration? or any acceleration?

i had a similar issue on a older vehicle.. turned out to be fuel pump
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post #5 of 5 (permalink) Old 04-18-2011, 01:27 PM
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I have a 7700 doing what yours did and it was the COP.
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