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-   -   Tranny Problems 47RH (http://www.ramforumz.com/showthread.php?t=127844)

Metal Mike 12-09-2012 11:17 AM

Tranny Problems 47RH
 
I have a recently rebuilt 47RH in my '95 dodge 3500 HD. I want to put toggle switches on the OD and on the lock up converter. I want to do this because it is full proof and I am currently having issues with these areas. The tranny guys that I've talked to say take it to dodge. I can't afford that. I can however afford toggle switches and wire etc. Can anyone tell me how to do this?

Gmiller 07-11-2016 09:28 AM

Torque convertor switch
 
I know that someone posted a detailed tutorial how to install a toggle switch for the TC several years ago. Unfortunately, I don't see it on short notice. I will keep looking. Good luck! By the way, do you know about all the "voodoo" tricks to improve the torque convertor performance such as tin foil over wires near the TPS and very clean battery terminals, etc.?

Gmiller 07-11-2016 05:42 PM

I found one switch
 
http://www.tstproducts.com/Torque%20...p%20Switch.pdf

This isn't what I was looking for, but it may be what you are looking for...

Gmiller 07-11-2016 05:57 PM

More TC info
 
By the way, I found what I was looking for - the voodoo things to try when the lockup TC slips in and out. Here is a partial list:

Make sure the ground connections from the battery to the body are clean
Make sure the little ground wires from the battery cable to the body are clean and in good contact
Make especially sure the ground wire under the PCM that connects to the firewall is clean and in good contact (it's on the passenger fenderwell)
Wrap the alternator wire with aluminum tape or foil where it is near the TPS ( Drivers side of engine, near front)

Gmiller 07-11-2016 05:58 PM

Found the TC switch instructions
 
I finally found the one I was looking for for you:

Torque Converter Lockup Switch

for 1996 - 2003 Ram Diesels

(except California vehicles)

The addition and use of a torque converter lockup switch can improve 0 to 60 mph times by 3-5 seconds, improve your ability to stay in higher gear when pulling heavy loads, and improves braking in 3rd and 4th gears when using an exhaust brake. The following diagram is supplied at no cost or obligation. Note that use of this method of lockup may be hard on vehicle drivetrain and may void vehicle drivetrain warranty. Use makes vehicle drive like a manual transmission in 4th gear such that vehicle may/will stall at low speeds/stops if lockup is not disconnected.

Note: Some 1996 automatics require computer to be reflashed by dealer for the lockup switch to work.

Step-by-step Instructions:

1. Install jumper wire in place of the trans relay in the Power Distribution Center (black box behind driver side battery) as shown in diagram below. This jumper wire will supply 12 volt positive to the transmission torque converter clutch solenoid. This jumper will be electrically hot thus it should be installed so as not to short against ground.

Note: The position of this relay changes from one year to the next. Consult relay location chart on inside of relay box cover.

2. Install ground wire from the B11 orange wire with black stripe to a switch or relay such that the ground source can be turned on and off. The B11 wire is located in the middle computer connector located on the firewall behind the air cleaner.





Driver must ground the B11 wire, have gear selector in Drive, and be moving fast enough to be in second gear before the torque converter clutch will engage. Transmission will shift from 2nd to 3rd, and 3rd to 4th(unless Overdrive is off) with the torque converter clutch locked. Once in 4th, the transmission will not downshift unless the ground source is interrupted, i.e. the switch is turned off.



Torque Converter Lockup Switch

for 1994 - 1995 Ram Diesels

The addition and use of a torque converter lockup switch can improve 0 to 60 mph times by 3-5 seconds, improve your ability to stay in higher gear when pulling heavy loads, and improves braking in 3rd and 4th gears when using an exhaust brake. The following diagram is supplied at no cost or obligation. Note that use of this method of lockup may be hard on vehicle drivetrain and may void vehicle drivetrain warranty. Use makes vehicle drive like a manual transmission in 4th gear such that vehicle may/will stall at low speeds/stops if lockup is not disconnected.

Step-by-step Instructions:

Install ground wire from the pin 54 orange wire with black stripe to a switch or relay such that the ground source can be turned on and off. The pin 54 orange wire with black stripe is located in computer connector located on the firewall behind the air cleaner.

Driver must ground the pin 54 wire, have gear selector in Drive, and be moving fast enough to be in second gear before the torque converter clutch will engage. Transmission will shift from 2nd to 3rd, and 3rd to 4th(unless Overdrive is off) with the torque converter clutch locked. Once in 4th, the transmission will not downshift unless the ground source is interrupted, i.e. the switch is turned off.

Gmiller 07-26-2016 09:07 AM

I made the switch
 
After another frustrating trip with my RV, I decided to install the lockup switch while at camp so that I wouldn't have the same trouble on the way home. Here are a few observations:
1. The modification isn't difficult, and would be easy to reverse.
2. It definitely solved the lockup problem
3. I was surprised to see that it still locks up automatically with the switch off
4. There are 2 orange/black wires in the center group, so needed a continuity tester to identify the correct wire.
5. The instructions say not to cut the orange/black wire, but I am wondering if I did whether it would stop the automatic lock-up. Does anyone know?

Onward and upward...:smileup:


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