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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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Thread Tools | Display Modes |
#1
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I am getting "tranny shudder" at 45-50 miles per hour when using 89 performance mode, it doesn’t do it when at stock or when the custom 89 tow tune is used.
I have 2005 5.4 The invoice # is 4469 invoice date is 5/4/2011 Hex RXCM5E4 Any help would be great . Charlie |
#2
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If you have the monochrome gryphon try raising the torque converter lock/unlock points.
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#3
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- Jack
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2024 F150 Platinum SCrew 3.5L PowerBoost FX4, Peragon Tonneau Cover, LineX Bed, 35% Window Tint on All Sides and Rear, Full Nose Paint Protection Film, Husky Mud Guards, Lasfit Floor Liners, VIOFO Dash Cam |
#4
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I have the monochrome gryphon , any suggestions on the values that I need to enter? Should I copy the values that the tow mode is using?
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#5
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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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#6
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I raised both the locking point and the unlocking point by two and that fixed the issue.
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#7
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I realize this is an old thread, and noticed you fixed your issue.
I have noticed mine shudders at the same speeds, but when the torque converter unlocks, upon light acceleration. I am currently running a stock Edge EVO on Lvl 3, and Lvl 2 when I tow. They both do it, but I also played with the shift firmness settings, it is still happening. Is this something that the Custom tunes I am waiting on might fix, or is this commeon in an 07 Screw 3.73 Rear end 2WD? |
#8
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#9
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I placed my order for custom tunes last night, so it will be awhile before those come in. Might have to change it a point at a time and see what it does. Thanks for the clarification. |
#10
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I am glad I found this Thread, My shudder stopped as well with a 2 point increment on each Lock and Unlock, Thanks guys.
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