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Message: [QUOTE="mandkole, post: 1264997, member: 4630"] The PCM is telling it to lock and unlock because of the speed differential its sensing. I ran the AE and you could watch the slip increase until it unlocked. Once it was unlocked, it quickly realized it shouldn't be unlocked and locked again. In my case the converter had been drifting on due to a pressure leak or other issue affecting the TCC apply. It was slowly killing itself until the lining on one disk of the TC clutch was gone. some reading that may help.. [url]http://www.sonnax.com/articles/198-4R100-Repeated-Converter-Failure[/url] Just replacing the converter may not fix it and you should look at the pump and the transmission. Not sure how many miles on it, but you may want to take it back to Brian. [/QUOTE]

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2009 F250

08 excursion

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99 F250 7.3L

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dwmaloney's F450

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