Jake use
#1
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Jake use
Is there any reason I shouldn't use the jake all the time? I don't tow all the time, and have to use the truck as a daily driver .
The manual for the Jake and owners manual does not mention anything for or against using it.
TIA
Tony
The manual for the Jake and owners manual does not mention anything for or against using it.
TIA
Tony
#2
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From all the information I have gathered, it is ok to use all the time, However the ECM keeps it from working below I think 25mph... Someone else will chime in with the absolute correct MPH
#3
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The Jake brake from the dealer will automatically shut off when three things happen, 1) engine rpm reaces idle speed 2) vehicle is stopped 3) engine temp is above 175*F.
So you can turn it on in the morning to warm up the truck which in turn will activate high idle, then when the temp reaches 175 it will shut itself off.
Drive all around town with it on and it will shut itself off at every stop. You won't ever have to turn it off if you don't want to.
On edit, don't forget to turn it off when driving in snow or ice conditions, because it could lock up the rear tires momentarily and cause you to lose control.
................Jim
So you can turn it on in the morning to warm up the truck which in turn will activate high idle, then when the temp reaches 175 it will shut itself off.
Drive all around town with it on and it will shut itself off at every stop. You won't ever have to turn it off if you don't want to.
On edit, don't forget to turn it off when driving in snow or ice conditions, because it could lock up the rear tires momentarily and cause you to lose control.
................Jim
#5
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Thread Starter
Thanks for the replies.
What I have found so far....
1) Yes, it will disengage: at ~22MPH, turn the switch off, or stop too fast for it to engage.
2) The Jake won't engage, if you are easy on the throttle and don't exceed 30MPH. Once you get past 30MPH at any throttle, it will engage
3) Yes, it will engage on a cold engine when it is at idle.
I just got the hi idle enable yesterday & have not checked operation with the jake.
Tony
What I have found so far....
1) Yes, it will disengage: at ~22MPH, turn the switch off, or stop too fast for it to engage.
2) The Jake won't engage, if you are easy on the throttle and don't exceed 30MPH. Once you get past 30MPH at any throttle, it will engage
3) Yes, it will engage on a cold engine when it is at idle.
I just got the hi idle enable yesterday & have not checked operation with the jake.
Tony
#7
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Originally Posted by dave78
Exhaust brake.. no jake on the little 5.9
Rusty
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#10
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Originally Posted by rammtuff
My early 3rd gen the exhaust brake always is on. Mine also stays on below 20 mph (a software glitch that was fixed later in the year) Mine won't shutoff when cold idleing either.
I think maybe the 20mph thing is related to the automatics. Both my trucks are 6spds and the Jake doesn't shutoff below any given speed. Although my 99 won't shutoff at a stop either.
.................Jim
#11
Ahhh mebbe.....
Does the exhaust brake on the autos work the same as the engine brakes on the heavy trucks with the Eaton autoshifts? Automatically disengages, changes gear, the reengages? Repeats this process until you are stopped?
Does the exhaust brake on the autos work the same as the engine brakes on the heavy trucks with the Eaton autoshifts? Automatically disengages, changes gear, the reengages? Repeats this process until you are stopped?
#12
Originally Posted by rammtuff
Ahhh mebbe.....
Does the exhaust brake on the autos work the same as the engine brakes on the heavy trucks with the Eaton autoshifts? Automatically disengages, changes gear, the reengages? Repeats this process until you are stopped?
Does the exhaust brake on the autos work the same as the engine brakes on the heavy trucks with the Eaton autoshifts? Automatically disengages, changes gear, the reengages? Repeats this process until you are stopped?
#13
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Thread Starter
It will downshift from 4th to third autoatically...You CAN manually downshift into 2nd about 25-30 and the jake will still be engaged, but by 20mph, it disengages.
So....my original question....Is there any reason to turn off the brake for empty daily driving?
Thanks!
TOny
So....my original question....Is there any reason to turn off the brake for empty daily driving?
Thanks!
TOny