Engine/Transmission (1998.5 - 2002) E-brake delay?

[Ertman]

I had the Dodge factory E-brake installed on my '01 3500 dually 6-speed with the 24-V ISB Cummins.



It works well, but there's almost a 3-second delay between the time I turn it on and when it activates.



I really want to get rid of the delay so the E-brake will come on as soon as I operate the switch. Anyone know how to do this?



Some of the factory E-brakes had a separate box that introduced the delay. Bypassing the box got rid of the delay on the older E-brakes, but mine doesn't have the second box.



It sure would be nice to have the E-brake come on NOW when I hit the switch.



Thanks all around.



Dick

 

[DavidC]

It is a built in delay in the ECM I believe. I think the only way to eliminate the delay would be to disconnect from the ECM and wire around it. I am not sure if it is 12V+ or - though. Someone here probably knows or a voltmeter will be required to check.



Dave

 

[PC12Driver]

The 2001 Jacobs e-brake gets its 12v power source from the ECM, which sends juice when the throttle has been at idle for 2-3 seconds (as you noticed). Using the ECM eliminates the need for a throttle pedal switch to sense zero throttle. If you want instant gratification and some level of safety, you'll need to fab up some sort of switch (an additional point of adjustment/failiure).



The delay is there for the folks that leave the brake switched on while they drive, so when they go to shift the e-brake doesn't repeatedly cycle.



Drive it for a while and you won't even notice the delay. If you need quick braking you should probably be using the service brakes anyway.