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2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.


 
 
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Old Mon, July 16th, 2012, 07:52 AM
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Longshot270 Longshot270 is offline
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In the custom tuning options you'll find torque converter lock points. These are speed and throttle based events that when the vehicle reaches the point the torque converter locks or unlocks. Your vehicle is currently sitting in a grey area where it can't make up its mind. Go to that setting in the custom options menu and raise both the locking point and the unlocking point by one and give it a drive. Keep raising it until the shudder goes away.


The tow tune will most likely show 0 for the locking/unlocking points because these settings are a change from the baseline.
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