torque converter duty cycle - Ford Powerstroke Diesel Forum
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Old 01-21-2013, 07:48 PM
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torque converter duty cycle

My trans has been acting up some so i was on a small road trip aboit 160 miles and i set my edge cts to read the torque converter duty cycle and it stayed at 0% no matter what i did. 0-60 runs, cruizing 80, slowing down, i even tried everything in tow haul and it still never changed. Idk what its supposed to read but i figured at cruizing speeds it should be locked 100% right? My truck was also running about 2100-2200rpms at about 75 with 3.73 gears and 325/60/18 tires. If someone knows more about the how the torque converter works and what it should be reading it would be greatly appreciated. The trucks going to the tranny shop this week anyways because my "built tranny" is also getting a bad 3-5 shift flare it didnt have for the first 15k after it was installed and its still under warrantee.
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Old 01-22-2013, 01:32 PM
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Does anyone know what the torque converter should read? I might be wrong but im assuming it should read 100% when it locks in OD. And i have read it locks in with certain gears threw the whole shift patern to essentially make more "gears". Any help would be appreciated or if someone could see what their truck reads for comparison
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Old 01-28-2013, 05:00 PM
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i have been getting my tune revised and its been doing some weird things and i had selected the tcc duty cylce to see what it was doing an i also noticed it always read 0% no matter what i did. so your not the only one but i'm curious if this is a normal find for these trucks for whatever reason maybe some strategy conflicts or something.
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Old 01-29-2013, 02:37 PM
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mine reads 0% also running vivians looney tune it doesnt seem to pull very hard like i think it should also dont see boost numbers higher than 24psi. milage is also down so i really think something is up with my tune or the converter isnt working right. Id like to hear if anyones duty cycle moves off of 0%
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Old 01-30-2013, 04:08 AM
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I don't think the edge's showing 0% is a result of any of the tunes that you guys are running because I've had the same result whenever I've set my edge to the TCC cycle and I'm running stock. Either we're all missing something or there's something about that feature that's not working properly. Somebody on here will have some insight into this I'm sure.
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Old 01-30-2013, 03:29 PM
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I don't THINK Vivians tunes have lockup unless specifically asked for. My fully built trans also has a flare from 3-5 while running the Looney tune.
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