"tranny shudder" at 45-50 miles per hour - Power Hungry Performance Forum

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"tranny shudder" at 45-50 miles per hour

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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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Sat, July 14th, 2012, 07:54 AM

charlie9092000 charlie9092000 is offline

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"tranny shudder" at 45-50 miles per hour

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

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