Houston, we have a tranny problem

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Apr 20, 2004 | 05:19 PM

BigBlackDodge

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Houston, we have a tranny problem

47re with a DTT TC, BD Valvebody, BM shift kit, Amsoil fluid
Last worked on at 241,000 miles.

Problem: no lock up except with Torq-loc manual switch

Crusing a 70 mph at 1850 rpm is normal
today truck was runnning around 2150 rpm
I flipped on the Torq-loc switch and rpm dropped back into normal operating range.
Truck will not lock up in 3rd gear like normal unless switch is turned on.
Everthing else is normal - shifting, no slippage etc...

What do you think?

Apr 20, 2004 | 05:32 PM

BigBlue

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Call up DTT and ask them. Sounds kinda like a solenoid crapped out on ya. Considering the miles and strain you put on it, I'm surprised you haven't had any other problems with it.

Apr 20, 2004 | 05:38 PM

BigBlackDodge

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I was wondering about the solenoid, but without the solenoid would the torq-loc even make it able to go into lock up.

Wonder if Ive lost line pressure?

Apr 20, 2004 | 06:01 PM

DPG

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From: Western Michigan

BBD, I'm just trying to think logically here, as I'm not any kind of transmission mechanic. If you had lost line pressure, or a solenoid, I wouldn't think that you could achieve any kind of lock-up. Because you can "manually" lock up the TC with the switch, I would think that the problem is either electrical, or electronic.

DeWain

Apr 20, 2004 | 07:13 PM

j-fox

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Since you can lock it with a manual switch, the problem is not in the trans.
I could be a connection/APPS/computer/ or brake switch.
I would start at your manual switch and check connections.

Apr 20, 2004 | 07:44 PM

BigBlackDodge

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I dissconnected the TL switch and wiggled the brake switch and it worked like normal. I reconnected the TL switch and it still worked like normal. If it does it again I will have to go through the process of elimination . Everthing was fine until I stopped for coffee this mornin, but all seems to be good.

I dont have a load for in th emorning so she is going in for a check up anyway.

thanks alot guys

joe