TC lockup switch - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 07-30-2008
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TC lockup switch

So I'm lookin for the wire that controls the TC. Looking to install a TC lockup switch for Anti theft purposes.

I need to find where the wire is and the color coding on it to ground out the solenoid and lock the torque converter at any speed any gear... The diesel guys use it to smoke people out, and mostly for towing so it doesn't kick down, but my friend also uses his for security reasons too.. since he doesn't have an alarm..

I'm assuming that it's on the harness coming off the trans by the linkage (was on my buddy's PSD)... But anyone know what the wires go to?

Truck is a 4.0L auto 01..
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Old 07-30-2008
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I told you what it was lol, its the same as the PSD. Its the VT/YE coming off the tranny. You can grab it off the PCM as well.
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Old 07-30-2008
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I know that now... You and your manual!
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Old 07-30-2008
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Gotta love it haha, I'll take some pics of everything tonight for a how-to
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  #5  
Old 07-30-2008
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Boo I like the word clutch without Torque converter.
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Old 07-30-2008
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That would be awesome. I would love to be able to do this. So it would lock in whatever gear your in? I could definetly use that for cruising on the hwy with a trailer...O/D here I come!
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Old 07-30-2008
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Originally Posted by jrpro130 View Post
That would be awesome. I would love to be able to do this. So it would lock in whatever gear your in? I could definetly use that for cruising on the hwy with a trailer...O/D here I come!
Sure can, lock it into top gear better economy, thats one of the other reasons we decided to use the TC solenoid, you can lock it into gear. This will also prevent the tranny from going into gear when the trucks parked.
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Old 07-30-2008
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Howd you figure this trick out Trent?
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Old 07-30-2008
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Tre told me about it, he found it from some of his friends with diesels. I got a wiring manual for my truck the other day and just looked up where the torque converter soleniod was and what wire controlled it. Its super simple, just tap into the wire with a switch so when the switch is on it grounds that wire.
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Old 07-30-2008
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coool
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Old 07-30-2008
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Yep, I was orginally gonna put a switch on the starter wire but then Tre reminded me that they can still put it into neutral and move it lol.
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Old 07-30-2008
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Yea, all the diesel guys do this for smoke :)

Edit: you doing a how to? That would be great...
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Old 07-30-2008
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Yeah I'll be doing one tonight. I'll go ahead and start workin on it now.
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Old 07-30-2008
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Originally Posted by jrpro130 View Post
Yea, all the diesel guys do this for smoke :)
Haha yeah I think this is how Tre found it, he told me he was lookin for info on it.
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Old 07-30-2008
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I've wired a few of them on my buddy's trucks... Just did another one last night on my friends PSD... Works like a charm.. At idle in gear, you can flip the switch and it dumps it into OD and kills the truck.. Like dumping the clutch on a manual.. they say on the diesel forums, if this happens, the switch is done right.

We mainly did it on his truck last night for smoking reasons, but it's also good to have on any vehicle, anti theft, fuel economy, what have you.... Maybe this will help us all increase hwy mileage... Well those of us that got blessed with autos hahah

What happens is it locks out the TC and prevents it for the most part from slipping into the lower gear.. Alot of the diesel guys use it for towing, keeps them in od and their egt's as well as boost on the tubro... As we all know, diesels get their power in the 1500-2500 power band range... so for them, if they can keep it in OD pulling a load, they can keep that toque where they need it when pulling..
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Old 07-30-2008
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Here's the how-to I'll edit it for more info and pics tonight:

https://www.ranger-forums.com/forum2...75#post1021275
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Old 07-30-2008
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For anti-theft reasons a hidden toggle switch for the fuel pump is also a good idea.
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Old 07-30-2008
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For anti-theft reasons a hidden toggle switch for the fuel pump is also a good idea.
Thats what this is, just better. This will not let the truck move at all. The fuel pump switch still lets them put the truck into neutral and roll it. Both would be the ultimate defense lol
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Old 07-30-2008
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Quote:
Originally Posted by TrePaul86 View Post
I've wired a few of them on my buddy's trucks... Just did another one last night on my friends PSD... Works like a charm.. At idle in gear, you can flip the switch and it dumps it into OD and kills the truck.. Like dumping the clutch on a manual.. they say on the diesel forums, if this happens, the switch is done right.

We mainly did it on his truck last night for smoking reasons, but it's also good to have on any vehicle, anti theft, fuel economy, what have you.... Maybe this will help us all increase hwy mileage... Well those of us that got blessed with autos hahah

What happens is it locks out the TC and prevents it for the most part from slipping into the lower gear.. Alot of the diesel guys use it for towing, keeps them in od and their egt's as well as boost on the tubro... As we all know, diesels get their power in the 1500-2500 power band range... so for them, if they can keep it in OD pulling a load, they can keep that toque where they need it when pulling..
Thats why I want a MANUAL diesel. (preferably cummins, they are more common with their 6spd than PSD with their manual)


What about a battery cut off switch? too eeasy for them to find out?
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Old 07-30-2008
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I know what you mean by they cant roll it. I just cant see the average ranger being high on the theft list. If someone wants your truck, they'll tow the thing off and not even mess with it. Given that, i'd just do a fuel cutout and call it a day. Good luck!

I'd rather just flip a switch and ground out the control side for the fuel pump relay and go.
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Old 07-30-2008
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I want to be able to lock out the converter on the highway to keep the rpm's low and get some better mileage while making my 120mi hike down to corvallis lol
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Old 07-30-2008
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Your truck doesn't do that from the factory? Ford put it there and puts it to use just fine in my truck. Cruising down the highway i can flick the brake pedal and watch the converter lock release on the tach....You'll probably not gain anything mpg wise as long as its working like it should from the factory..And if you try and climb or accellerate with it locked and it shouldn't..you'll end up lugging it more and getting worse mileage in my opinon.
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Old 07-30-2008
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Yea, mine does that too. Also if you let off the gas, then hit it again, it will either downshift or unlock.
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Old 07-30-2008
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Yeah, I don't want it to unlock... That's the thing... I'll unlock it going up a hill, but on the flat ground I'll lock it to keep the rpm's low
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Old 07-30-2008
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Interesting, well should work out well for that. Mine seems to do that as is.
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