tc lock up switch
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Junior User
Joined: Mar 2007
Posts: 76
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tc lock up switch
was reading on here that some one took the purple wire with yellow trace
and hooked it up to a togle switch to lock the tourqe converter
has any one else done this
do you leave it locked up all the time
is it better for the tranny
thanks
and hooked it up to a togle switch to lock the tourqe converter
has any one else done this
do you leave it locked up all the time
is it better for the tranny
thanks
Post Fiend
Joined: Jun 2006
Posts: 9,714
Likes: 2
From: White Mnt's,New Hampshire
many of us do and many have the switch as you read about..locking the tc is like taking your foot off the clutch in a hand shaker..i have the SP diesel that will lock and un lock my tc at what ever speed i choose...
Post Fiend
Joined: Sep 2006
Posts: 7,426
Likes: 6
From: Sioux Falls, SD
Here's Guzzle's way.....
Welcome to guzzle's TC Lockup Mod Web Page
Use it wisely. You can't leave it on all the time. Need to remember to unlock it when coming to a stop or you will feel the truck "shake & bake" and stall. Ussually need to unlock it no lower than 20 mph. Great mod for towing when you need to slow the rig down. But tuners like Tony & DP make there custom programs to do the same thing.
Welcome to guzzle's TC Lockup Mod Web Page
Use it wisely. You can't leave it on all the time. Need to remember to unlock it when coming to a stop or you will feel the truck "shake & bake" and stall. Ussually need to unlock it no lower than 20 mph. Great mod for towing when you need to slow the rig down. But tuners like Tony & DP make there custom programs to do the same thing.
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Post Fiend
Joined: Sep 2006
Posts: 7,426
Likes: 6
From: Sioux Falls, SD
Here's another link & way to do it: but you will see the OD on/off light blinking when the PCM tries to unlock th TC and it doesn't.
Torque Convertor Lock-up mod
Torque Convertor Lock-up mod
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Lead Driver
Joined: Jan 2006
Posts: 6,267
Likes: 5
DONT LEAVE IT LOCKED AT LOW RPMS AND HIT HTE FUEL, youll roast the TC, apparently. the tranny builds more pressure as the rpms go up, so under 1000 is IMHO only for light throttle, and once i hit 1600 i mash it, but between 1000 an 1600 i kinda give it little by lirtttle.
Go Bills !
Joined: Jan 2008
Posts: 2,778
Likes: 65
From: Buffalo, NY
I love mine when pulling, Helps big time keeping the heat down.. Running empty i don't use it. Did it all myself for under $50
Green led monitors, Red is for manual override.
1st switch is for TC lockup
2nd is for EBPV brake.
The rest are for future plans. like lights etc.
SpringerPop's Upfitter Switches
Green led monitors, Red is for manual override.
1st switch is for TC lockup
2nd is for EBPV brake.
The rest are for future plans. like lights etc.
SpringerPop's Upfitter Switches
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,703
Likes: 2,624
From: SE Florida
If you lock it below 1300 RPM you have a risk of not enough pressure to hold the clutch. If it slips it isn't going to last a long time.
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