Ok mine with a chip and being a 96 locks up no mater what gear at about 32-35 and will shift into OD at about 45. There is nothing wrong and it is perfectly normal. If you guys are used to driving Dodges they go 1-2-3-4-TC. Fords go 1-2-3-4 with TC happening at 30 something. If you calibrate for bigger tires it's still going to lockup at 30 something. It's this whole safety thing or they would lower it even more. Also my TC doesn't disengage until it drops below 30 or I touch the brakes. I wish it would only do it if it dropped below 30, but it's fine.
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