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Power Strokes
7.3 Aftermarket
4r100 issues after rebuild
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[QUOTE="Northwoods2002, post: 1087638, member: 14449"] Spit balls here, but if my understand was correct, the new 4R100s had a PWM solenoid pack that 'pulsed' the converter lock up. Ford stated too many customers complained about harsh shifts and therefore 'designed' slippage into the locking and unlocking of the converter. A lot of times when they get rebuilt people unintentionally install the mods that virtually eliminate this 'programming' in the valve body and pump to get the 'harsh' firm shifts. You're truck may be trying to fight this programming and thats the 'flare' you feel... [/QUOTE]
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