Torque Converter lock up - Ford Powerstroke Diesel Forum
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Old 07-29-2012, 02:03 PM
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Post Torque Converter lock up

I want to get information on torque converter lock up switches. Iv done a little researching and like the options of the ATS copilot of being able to set the speed it locks at. What are my other options for TC lockup. The reason i want to add this to my truck is because I pull with it and sometimes the trans gets a little hot.
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Old 07-29-2012, 02:09 PM
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Your tc lock can be adjusted in programming. There are threads on adding a switch to control it. Your best bet would be to do a 6.0 cooler to keep temps down.

Guzzle tc switch

Last edited by HillClimber350; 07-31-2012 at 08:21 AM.
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Old 07-29-2012, 02:44 PM
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I do have an aftermarket cooler similar to the 6.0 cooler. the main reason im looking into this is because sometimes im not able to get up to speed because of small country roads and im either in 2nd or 3rd gear and the TC unlocked drives my temps way out of where i want them
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Old 07-29-2012, 03:09 PM
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I have the same problem.. I looked at that like and it's a "how too make" dose he sale the controller?


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Old 07-29-2012, 03:24 PM
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Bad thing with what you are describing is that I am not sure how long a stock tranny would be able to handle a 2nd gear tc lock. I am in the same boat dirt road speed limit here is 45 so getting into tc lockup speed can be an issue.
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Old 07-29-2012, 03:36 PM
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My trans is built the only things i dont have in it is billit input and output shafts.
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Old 07-31-2012, 05:41 AM
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I found this write up on how to make a switch box seems like a good way to go but I was wondering if this would be needed or wanted if you have a preformance chip? Also if the switch is off does that mean that it won't lock up at all?

http://www.guzzle7pt3.com/tclock.php
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Old 07-31-2012, 07:57 AM
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If you get a 3 way switch it will be on, neutral (stock setting) and off.

A tc lockup is great because it gives you more power and better mpg.. you just have to know how/when to use it or else you WILL blow input shafts under wot runs.
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Old 07-31-2012, 09:39 AM
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So my truck will shift from 2 to 3rd, and run in 3rd for just a little and then the TC locks. Would this be better to lock right away in third? Does it have to be unlocked when going from 3rd to 4th/OD? Can you run it in 4th/od locked?
early 99. Auto 2wd.
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Old 07-31-2012, 03:33 PM
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Quote:
Originally Posted by 400kStroker View Post
So my truck will shift from 2 to 3rd, and run in 3rd for just a little and then the TC locks. Would this be better to lock right away in third? Does it have to be unlocked when going from 3rd to 4th/OD? Can you run it in 4th/od locked?
early 99. Auto 2wd.
The converter is locked in fourth gear. The PCM unlocks the converter between shifts to avoid harsh shifts. Once in gear the converter locks up.
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