Way to change when TC lockup engages?
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Joined: Apr 2010
Posts: 87,453
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From: Clayton MI
You can go a couple ways with a switch, disable TCC altogether, have it engage until you flip the switch to a different position, or, PCM controlled. 
Three position switch, and yet get whatever you want. 
Three position switch, and yet get whatever you want.
Aye now we're talking. We need to get a write up done
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Professional
Joined: Oct 2013
Posts: 237
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From: Northwest Texas
Alright fellas I went ahead and took a video of a 5-40 run. So at about 17 seconds in the truck is in 3rd gear and shortly after the rpms drop by a couple hundred then pretty quick after that they drop again by about 500 or so
What is the first 200rpm drop?
http://youtu.be/hnAtj4eJTIQ
What is the first 200rpm drop?
http://youtu.be/hnAtj4eJTIQ
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Professional
Joined: Oct 2013
Posts: 237
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From: Northwest Texas
Well not for my trans
Last edited by Nate_rs; Jan 20, 2016 at 12:22 AM.
Thread Starter
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Professional
Joined: Oct 2013
Posts: 237
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From: Northwest Texas
Well that's not even my issue as UnregisteredUser pointed out
The truck just goes into overdrive too quick, so I'm looking for a way to make it hold 3rd longer
The truck just goes into overdrive too quick, so I'm looking for a way to make it hold 3rd longer
Administrator
Joined: Apr 2010
Posts: 87,453
Likes: 4,218
From: Clayton MI
200 RPM drop is TCC engage. 500 or so drop is 4th gear. (o/d)
There is a switch to disable overdrive, if you don't think you are going to be using it. (that will certainly keep the truck in 3rd.) Another member installed a relay in the circuit, so that the truck automatically defaults to O/D off....... I think there is a write-up for that in the FAQ section.
There is a switch to disable overdrive, if you don't think you are going to be using it. (that will certainly keep the truck in 3rd.) Another member installed a relay in the circuit, so that the truck automatically defaults to O/D off....... I think there is a write-up for that in the FAQ section.
