Engine/Transmission (1998.5 - 2002) exhaust brake for automatic

[BGoodale]

I'm getting all kinds of conflicting info on being able to install a Jake or Pac Brake on my 01 Dodge Cummins with automatic. The dealer here will not install one but the Cummins Shop near us says that they can but may need to install a lock up device for the torque converter. Can anyone help?

 

[DavidC]

You definately need the TC lockup for the exhaust brake. I am not to sure installing a mystery switch to keep the TC locked up would be a good idea either just in case the thought crosses your mind.



Dave

 

[SnoKing]

I'm getting all kinds of conflicting info on being able to install a Jake or Pac Brake on my 01 Dodge Cummins with automatic. The dealer here will not install one but the Cummins Shop near us says that they can but may need to install a lock up device for the torque converter. Can anyone help?

Read this.



https://www.turbodieselregister.com/forums/showthread.php?t=114893&highlight=2001+5



This is what I did. SNOKING

 

[AFarmer]

In order to have an exhaust brake on an auto, you have to have a lockup device for the tq converter or your exhaust brake won't be worth anything.

 

[Will Manchester]

As others have stated, you will definitely have to have some means of keeping the TC locked (BTW, a controller, lockup switch, mystery switch, etc all do the same thing - keep the TC locked - some are automated, some are manual). Problem here is with a stock TC and a stock VB, you are almost guaranteed to burn your TC clutch. Furthermore, with a stock VB, you will only be able to maintain lockup in 3rd and 4th gear if you have a 47RE. To "correctly" run an exhaust brake with an auto (in other words reliable!), you should invest in a good aftermarket TC, VB, and some sort of lockup controller along with your exhaust brake. $$$ adds up quick when you do it right! Good news is that with many of your aftermarket VB's you will have the ability to maintain lockup in all gears which is a major bonus for towing at slow speed - both up and down the hills.