madman1 Posted 21 hours ago Share Posted 21 hours ago How can I wire to bypass the jakebrake so it doesn't shut off at 850 rpms on a 2000 rd model? Am used to old school jake , where they didn't do that. Quote Link to comment https://www.bigmacktrucks.com/topic/75455-jakebrake/ Share on other sites More sharing options...
mechohaulic Posted 20 hours ago Share Posted 20 hours ago old school jakes (I installed many) weren't wired into a computer as today's iron. I'd bet you can't; unless some one chimes in with more knowledge of the computer system : definitely not me. Quote Link to comment https://www.bigmacktrucks.com/topic/75455-jakebrake/#findComment-574574 Share on other sites More sharing options...
mechohaulic Posted 20 hours ago Share Posted 20 hours ago my question is ;; why would you want the jake on lower then 850 eng RPM's ?? stall time ?? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75455-jakebrake/#findComment-574575 Share on other sites More sharing options...
Joey Mack Posted 19 hours ago Share Posted 19 hours ago Well since it has an electric throttle pedal, and therefore no injection pump. You could put a fuse switch in the dash and on the shifter and a switch on the clutch pedal. You will just shut it off when not needed. You wont be able to just drive or shift with it on, because of how the clutch switch will work 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75455-jakebrake/#findComment-574577 Share on other sites More sharing options...
Joseph Cummings Posted 18 hours ago Share Posted 18 hours ago 1 hour ago, mechohaulic said: my question is ;; why would you want the jake on lower then 850 eng RPM's ?? stall time ?? Yeah, Jakes have a negative horsepower rating. Being how much horsepower they eat up. I've seen the curves long ago, and I know down at like 850 they are really just making noise. The curve is pretty flat. Here is a sample of one 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75455-jakebrake/#findComment-574580 Share on other sites More sharing options...
mechohaulic Posted 17 hours ago Share Posted 17 hours ago 2 hours ago, Joey Mack said: Well since it has an electric throttle pedal, and therefore no injection pump. You could put a fuse switch in the dash and on the shifter and a switch on the clutch pedal. You will just shut it off when not needed. You wont be able to just drive or shift with it on, because of how the clutch switch will work sure glad people like yourself are out there bringing old people like myself up to date. I forgot about the no injection pump/ mechanical pedal linkage. still don't see a need for lower then 850 jake. around here all you hear are the big pete/kw triaxles using the jake for shifting/making noise then actual slow down. like the 4 wheel tin cans with the ying ying mufflers. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75455-jakebrake/#findComment-574584 Share on other sites More sharing options...
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