Drivetrain Clutch, Torque Converter, Transmission, Driveline, Axles, Rear Ends

TC switch install?? Did a search NO how to guide??

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Old May 20, 2007 | 09:13 AM
  #1  
onebad636's Avatar
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From: Falling Waters, WV
TC switch install?? Did a search NO how to guide??

I am only going to use it on the interstate because with my 4.10's the damn thing won't stay locked. I have to drive 3 hours to get it tuned and I don't want it staying unlocked for that long. Too much heat in the trans. Someone has to know how to do this on an OBD2 car right??

Thanks

crys_darin@hotmail.com
Old May 20, 2007 | 09:40 AM
  #2  
Dave89IROC's Avatar
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From: Melvindale, MI, US
huh?

it is speed/TPS/ECT dependant, drive fast enough and it will lock

it is probably locking low right now, since it thinks you are going faster then you really are
Old May 20, 2007 | 10:22 AM
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From: Falling Waters, WV
It will lock for a while and then unlock for a while without changing speed. It still won't lock up after it unlocks if you speed up. I just want to install the switch until I can make sure that it locks up all the time down the interstate. After that I will remove it. Any install guides would help.
Old May 20, 2007 | 10:54 AM
  #4  
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We've seen this problem many many times with TCI converters. TCI just doesn't make a very good lock-up converter.
Running an A4 without lock-up WILL destroy the 3-4 clutches.

You should start by having a datastream ran on the car to see if the lock-up is commanded "ON". If it's not, you've got to find the cause. If it's commanding it and you're still not getting it, you may have a bad solenoid, or as I mentioned, it's your converter.

I wouldn't advise installing a manual switch, because it's kind of "half assed". If you still choose to fix it incorrectly, the "T" terminal in the case connector is the TCC ground. This is the row closest to the inside of the transmission. There's only 2 pins in that row. You want the one closest to the bell. The computer sends the 12V to the TCC solenoid, so if you supply your own ground to terminal "T" you should have lock-up. If you leave it grounded, you'll have lock-up immediately after the 1-2 shift.

Frank
CPT

Last edited by 12SCNDZ; May 21, 2007 at 04:31 PM.
Old May 20, 2007 | 01:52 PM
  #5  
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From: Falling Waters, WV
Well it will only be halfassed until I can get it tuned. I just want it to work for the drive up there. My buddies did the same thing with a vig converter until it was tuned. I worked great until I put my cam in. Then it wouldn't lock all the time. I think it is something to do with the TPS voltage.
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