Torque converter clutch lockup switch
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Postmaster
Joined: Oct 2006
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From: Davis & Newcastle, CA
Torque converter clutch lockup switch
I know this has been covered before, and I bookmarked the thread, but I've got another question. I'd like to install a torque converter clutch lockup switch that will allow me to lock the converter at any speed/RPM but I'm a bit confused as to how the electrical circuit works. The torque converter is UNLOCKED when it has +12v to it and LOCKED when the voltage is removed? Or vice versa? Thanks.
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From: Easton,Ks
Originally Posted by Skandocious
I know this has been covered before, and I bookmarked the thread, but I've got another question. I'd like to install a torque converter clutch lockup switch that will allow me to lock the converter at any speed/RPM but I'm a bit confused as to how the electrical circuit works. The torque converter is UNLOCKED when it has +12v to it and LOCKED when the voltage is removed? Or vice versa? Thanks.
The clutch is on when grouned, off when not grounded.
/
Fleet Owner
Joined: Mar 2003
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From: Blue Hill Township
Originally Posted by Skandocious
I know this has been covered before, and I bookmarked the thread, but I've got another question. I'd like to install a torque converter clutch lockup switch that will allow me to lock the converter at any speed/RPM but I'm a bit confused as to how the electrical circuit works. The torque converter is UNLOCKED when it has +12v to it and LOCKED when the voltage is removed? Or vice versa? Thanks.
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Postmaster
Joined: Oct 2006
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From: Davis & Newcastle, CA
So then installing a switch inline on that wire would only allow me to UNLOCK the converter when it has been locked already be the ECU, by breaking the ground. No? If I wanted to lock the converter on command then I'd need a three way switch with the center prong running to ground, no? But then I wouldn't be able to restore the originial circuit...
Fleet Owner
Joined: Mar 2003
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From: Blue Hill Township
To UNLOCK the converter you would break the connection between the ECU and the transmission. This site has a good diagram with LEDs for ya.
http://www.forgotton.net/mods/tclock/index.htm
http://www.forgotton.net/mods/tclock/index.htm
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Fleet Owner
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From: Easton,Ks
Originally Posted by Skandocious
So then installing a switch inline on that wire would only allow me to UNLOCK the converter when it has been locked already be the ECU, by breaking the ground. No? If I wanted to lock the converter on command then I'd need a three way switch with the center prong running to ground, no? But then I wouldn't be able to restore the originial circuit...
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Fleet Owner
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From: Easton,Ks
Originally Posted by Skandocious
Ahhh yes it makes sense now!! You guys are awesome. Chris I gave you rep points but Bill I can't give you more until I "spread it around". Thanks you guys.
Last edited by subford; Nov 19, 2007 at 06:40 PM.
Thread Starter
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Postmaster
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From: Davis & Newcastle, CA
I know Bill it kinda sucks... I know I'm not nearly as knowledgable as you but when I actually DO know something, I don't get the rep for it... 
Playa_fl, click on Chris's link above and it explains the benefits of the TC lockup switch at the bottom of the page.
Playa_fl, click on Chris's link above and it explains the benefits of the TC lockup switch at the bottom of the page.
Fleet Owner
Joined: Aug 2005
Posts: 23,667
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From: Easton,Ks
Originally Posted by Playa_fl
What are the benefits of manually locking/unlocking the torque converter? I have no clue about how this works. When its locked what does it do? Sorry to thread jack
If you have the Mod it can be used for towing above about 25 MPH and engine braking. This can also keep the oil cooler in the transmission.
Last edited by subford; Nov 19, 2007 at 06:59 PM.
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