T/C lockup conclusion (mine at least) - Ford Powerstroke Diesel Forum
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post #1 of 1 Old 05-04-2009, 07:05 PM Thread Starter
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T/C lockup conclusion (mine at least)

so I wired in the DPDT, two LED T/C lock up switch today. I wanted to have more reliability/control when pulling my camper this summer. Here is what I noted: TC stays unlocked until 37mph then it locks. I started on a flat 55mph hiway, TC stayed locked in the whole time after 37mph. Started up the mountain, steep grade hill my converter stayed engaged while automaticaly down, and upshifting. I am basing this on the green led incircuit with the ECM, wich should light up when comp. is telling TC to lockup. I played several times with turning on the lockup manually and noticed no diff in behavior. I came to a stop on a pullout to make sure my switch worked and the TC was locking in,.............it is, it started acting as though I was lugging a stick, as soon as I turned the switch off it smoothed out, so that works. Coming down the mountain the TC stayed locked in all of the time, even when I was applying brake, until I slowed below 39mph then it unlocked. So is this a "special truck" or is anyone else coming to the same conclusion, cause this is way different than what I have been reading, and now I don't see a reason to have it, it automaticaly does what the switch manually does, so why a switch anyone got some comparison??

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2000 ccsb auto, 4x4 269,xxx and still climbing on the original transmission. TS 6 position chip, aih delete, 4" BANKS exhaust, recon cab lights, cowl hood, useless zoodad mod, CTS Insight to monitor, boost fooler, Garret GTP38 turbo, Airaid cold air box, TDK prerunner protecting the front, the wonderful Stancor GPR, and all wrapped up in a beautiful black package.
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