how do I use high idle
With the truck running in park & foot OFF the brake, hit the cruise. With the cruise turned on hit the set button. It should idle up to about 1,000 RPM's. You can hit ACCEL. to increase it up to 1,500 RPM's @ 100 RPM intervals & DECEL to drop it back to 1,000. Hit brake or hit CANCEL to turn it off.
It'll also work in neutral with your foot off the brake. You can have the parking brake set, but if it isn't and the truck starts to roll, it will cancel the high idle.
If you have an exhaust brake that comes on at idle to help warm-up, it will work in the lowest setting of high idle too [if the exhaust brake is turned on]. As soon as you use accel to bump up the idle speed, the exhaust brake will turn off. Go back down during high idle with the decel, and the exhaust brake will come back on.
If you have an exhaust brake that comes on at idle to help warm-up, it will work in the lowest setting of high idle too [if the exhaust brake is turned on]. As soon as you use accel to bump up the idle speed, the exhaust brake will turn off. Go back down during high idle with the decel, and the exhaust brake will come back on.
I would love to have this feature on my 03 (built 11/02) but to my understanding it's not there. If I understand correctly you can have the high idle feature with the Smarty, does the Smarty programmer write in this feature or is it really already there and it just enables it to work. I wished Dodge would have a TSB on this to activate the early 3rd gens trucks.
Tony
Tony
I would like to have it too. Been unable to drive my stick since last of August. I just went out (on crutches) and high idled mine for 30 minutes, looked around in cab and found empty Propel bottle, and put it on go pedal and other end under panel above floorboard. Worked great, bout 1600 rpm or whatever. High idle would be cool, but I have 6 speed and I know it can be done but ??? think it is a pain??? I understand some dealers don't even know how to do it on a stick. [ I am still recovering from sliding off roof and getting to look at my bones without x-ray. Another skin graft Tues and hopefully last of surgeries after 4 of them, glad I have insurance or I would have to go bankrupt I guess.] Sorry for the long windedness, guess I have cabin fever.
Diablo
I was looking around on the Diablo Sport website and found a thread that gave info about enabling it on a 6 speed. Something about a plug on the drivers side of the tranny and grounding out a connector or something, maybe someone can make sense of it, it is here: http://www.diablosport.com/index.php...ewtopic&t=3564
PS. you still have to enable it in the computer.
PS. you still have to enable it in the computer.
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I would like to have it too. Been unable to drive my stick since last of August. I just went out (on crutches) and high idled mine for 30 minutes, looked around in cab and found empty Propel bottle, and put it on go pedal and other end under panel above floorboard. Worked great, bout 1600 rpm or whatever. High idle would be cool, but I have 6 speed and I know it can be done but ??? think it is a pain??? I understand some dealers don't even know how to do it on a stick. [ I am still recovering from sliding off roof and getting to look at my bones without x-ray. Another skin graft Tues and hopefully last of surgeries after 4 of them, glad I have insurance or I would have to go bankrupt I guess.] Sorry for the long windedness, guess I have cabin fever.
It's easier then you think!
Here ya go! Took me about 20 min. The pic is of my install.
So not to confuse the Dealer when he tries to enable the High Idle in the ECM, it's best if you've electro-mechanically "enabled" it first with either Step-1 or Steps-2 thru 3;
1) Buy the $200 clutch-switch kit and install as instructed. - Pass Go - straight to Step 4…
2) Install a "dummy" clutch-switch by shorting the ECM connector-B Pin #22 to ground as follows: (Note this probably circumvents someone’s concept of safe power-train operation as depressing the clutch with this method will not disengage the high-idle "cruise" setting)
2a) Buy a new ECM connector pin (I bought the Cummins Pigtail part number #3164263 for ~$10.00+tax at a local Kenworth dealer) or use an old junk yard harness to salvage a single pin with a ~6"-7" lead.
2b) If you bought the pigtail #3164263, the lead will be too short, so pick up some 18AWG to extend the lead length. The pigtail already comes with a crimp connector and a heat shrink insulator ready for the extension-lead.
- Crimp the ~5" 18AWG extension-lead into the pigtail and hit the heat-shrink sleeve with a heat-gun (or a lighter!!) Please check your own extension-lead lengths before crimping - this ~5" is from my lousy memory !!
- Add a 1/4" ring terminal to the end of the extension lead (this'll connect to a ground post) - I bought the ones with a semi-clear blue "plastic" sleeve, the sleeve is actually a weather-proof heat shrink. Hit the heat-shrink sleeve with some heat.
3) Remove plug B on the ECM (the 50 pin connector on the drivers side of the engine closest to the rear of engine with a 4mm Allen screw in the center). Note: this is probably best done with the both batteries disconnected first (I did mine with the batteries connected - sloppy).
3a) Push (use a paper clip) the sealing plug out of position #22 (starting at to left, count across, there are 50 pins total, #22 is second in from left, third row down) Note: #22 is the PTO/Clutch switch sense terminal (page 8W 80-98 in the shop manual).
3b) Insert the pigtail-lead into the back of the #22 until you feel a positive detent (click), lightly tug the wire to ensure that it's been properly inserted and cannot be removed. Note: Make sure that you've properly identified #22 - if you've put it into the wrong position, you'll probably need to head over to the dealer to use a special pin removal tool...
3c) Reconnect the ECM connector, don't bother trying to push it on, just seat it square on the ECM connector, and carefully thread the 4mm Allen screw until it bottoms out.
3d) Slide the ring-terminal over the lower-left post of the ECM retaining stud (mine stud had an extra ~1" of available thread)
3e) Add a 1/4-28 fine-grade nut to secure the ring-terminal to the ECM retaining stud, torque to... - oh hell - just tighten it !!!
3f) Reconnect the batteries if disconnected.
4) Take the truck to the dealer to enable the High Idle option. On older models, I think it's an actual TSB (18-004-04) to flash/load the ECM - my '06 just needed it to be enabled.
- If your tech can't figure out what/where a high-idle is (mine didn't know) tell him to follow these menu options (I think these are from the DRBIII and not the Star tool which they used on my '06)
- With the ignition in the “RUN” position, using the DRBIIIT select:
-> DRBIII Standalone
-> xxxx - xxxx Diagnostics
-> All (Except Below)
-> Engine
-> Misc. Function
-> Idle Up Feature Enable (the option is in the same place as the daylight running lights)
- Ensure that the after the flash option has been loaded to the ECM (TSB 18-004-04) that it also activated - this is a additional step !! Again - note that on my newer '06 they just had to enable it - not flash it as a TSB !!
5) If your tech knows his ABC's - he will know how to verify if the high-idle has been properly loaded/enabled - if not, here's how the high idle on my 6spd worked:
- Start truck.
- Stay off the clutch (if clutch switch was installed) and service brake pedals (recommend setting the parking brake on your 6 speed !!).
- Turn on "cruise".
- Hit "set".
- The engine should come up to 1,100 rpm.
- Then hit or hold accel;
- Each time you hit accel momentarily it should go up 100 rpm (Max is 1,500 rpm).
- Each time you hit decel momentarily it should go down 100 rpm (Min is 1,100 rpm).
- Hit the service brake pedal, the RPM's should drop back down to the normal ~750.
- Hit the "set" button, it should run back up to 1100 rpm.
- Hit "cruise" to turn off cruise and the RPM's should drop back down to the normal ~750.
6) If you have any follow on TSB's that flash the ECM, remind the service manager (or better yet the tech) to ensure that high-idle is to be re-enabled following the TSB flash. Mine was disabled after applying the 18-003-06 hard-start TSB last week.
7) Smugly recall the fella who posted his stout-lumber stick "High Idle Management Interface" picture next time you're at a long light out in the flatlands and hit your "Cruise, Set" buttons... Don't roll into the intersection !!

So not to confuse the Dealer when he tries to enable the High Idle in the ECM, it's best if you've electro-mechanically "enabled" it first with either Step-1 or Steps-2 thru 3;
1) Buy the $200 clutch-switch kit and install as instructed. - Pass Go - straight to Step 4…
2) Install a "dummy" clutch-switch by shorting the ECM connector-B Pin #22 to ground as follows: (Note this probably circumvents someone’s concept of safe power-train operation as depressing the clutch with this method will not disengage the high-idle "cruise" setting)
2a) Buy a new ECM connector pin (I bought the Cummins Pigtail part number #3164263 for ~$10.00+tax at a local Kenworth dealer) or use an old junk yard harness to salvage a single pin with a ~6"-7" lead.
2b) If you bought the pigtail #3164263, the lead will be too short, so pick up some 18AWG to extend the lead length. The pigtail already comes with a crimp connector and a heat shrink insulator ready for the extension-lead.
- Crimp the ~5" 18AWG extension-lead into the pigtail and hit the heat-shrink sleeve with a heat-gun (or a lighter!!) Please check your own extension-lead lengths before crimping - this ~5" is from my lousy memory !!
- Add a 1/4" ring terminal to the end of the extension lead (this'll connect to a ground post) - I bought the ones with a semi-clear blue "plastic" sleeve, the sleeve is actually a weather-proof heat shrink. Hit the heat-shrink sleeve with some heat.
3) Remove plug B on the ECM (the 50 pin connector on the drivers side of the engine closest to the rear of engine with a 4mm Allen screw in the center). Note: this is probably best done with the both batteries disconnected first (I did mine with the batteries connected - sloppy).
3a) Push (use a paper clip) the sealing plug out of position #22 (starting at to left, count across, there are 50 pins total, #22 is second in from left, third row down) Note: #22 is the PTO/Clutch switch sense terminal (page 8W 80-98 in the shop manual).
3b) Insert the pigtail-lead into the back of the #22 until you feel a positive detent (click), lightly tug the wire to ensure that it's been properly inserted and cannot be removed. Note: Make sure that you've properly identified #22 - if you've put it into the wrong position, you'll probably need to head over to the dealer to use a special pin removal tool...
3c) Reconnect the ECM connector, don't bother trying to push it on, just seat it square on the ECM connector, and carefully thread the 4mm Allen screw until it bottoms out.
3d) Slide the ring-terminal over the lower-left post of the ECM retaining stud (mine stud had an extra ~1" of available thread)
3e) Add a 1/4-28 fine-grade nut to secure the ring-terminal to the ECM retaining stud, torque to... - oh hell - just tighten it !!!
3f) Reconnect the batteries if disconnected.
4) Take the truck to the dealer to enable the High Idle option. On older models, I think it's an actual TSB (18-004-04) to flash/load the ECM - my '06 just needed it to be enabled.
- If your tech can't figure out what/where a high-idle is (mine didn't know) tell him to follow these menu options (I think these are from the DRBIII and not the Star tool which they used on my '06)
- With the ignition in the “RUN” position, using the DRBIIIT select:
-> DRBIII Standalone
-> xxxx - xxxx Diagnostics
-> All (Except Below)
-> Engine
-> Misc. Function
-> Idle Up Feature Enable (the option is in the same place as the daylight running lights)
- Ensure that the after the flash option has been loaded to the ECM (TSB 18-004-04) that it also activated - this is a additional step !! Again - note that on my newer '06 they just had to enable it - not flash it as a TSB !!
5) If your tech knows his ABC's - he will know how to verify if the high-idle has been properly loaded/enabled - if not, here's how the high idle on my 6spd worked:
- Start truck.
- Stay off the clutch (if clutch switch was installed) and service brake pedals (recommend setting the parking brake on your 6 speed !!).
- Turn on "cruise".
- Hit "set".
- The engine should come up to 1,100 rpm.
- Then hit or hold accel;
- Each time you hit accel momentarily it should go up 100 rpm (Max is 1,500 rpm).
- Each time you hit decel momentarily it should go down 100 rpm (Min is 1,100 rpm).
- Hit the service brake pedal, the RPM's should drop back down to the normal ~750.
- Hit the "set" button, it should run back up to 1100 rpm.
- Hit "cruise" to turn off cruise and the RPM's should drop back down to the normal ~750.
6) If you have any follow on TSB's that flash the ECM, remind the service manager (or better yet the tech) to ensure that high-idle is to be re-enabled following the TSB flash. Mine was disabled after applying the 18-003-06 hard-start TSB last week.
7) Smugly recall the fella who posted his stout-lumber stick "High Idle Management Interface" picture next time you're at a long light out in the flatlands and hit your "Cruise, Set" buttons... Don't roll into the intersection !!

I would like to have it too. Been unable to drive my stick since last of August. I just went out (on crutches) and high idled mine for 30 minutes, looked around in cab and found empty Propel bottle, and put it on go pedal and other end under panel above floorboard. Worked great, bout 1600 rpm or whatever. High idle would be cool, but I have 6 speed and I know it can be done but ??? think it is a pain??? I understand some dealers don't even know how to do it on a stick. [ I am still recovering from sliding off roof and getting to look at my bones without x-ray. Another skin graft Tues and hopefully last of surgeries after 4 of them, glad I have insurance or I would have to go bankrupt I guess.] Sorry for the long windedness, guess I have cabin fever.
if you can get someone to help you-
#1 buy pigtail #3164263 from cummins dealer($11.43)
#2 use a 4mm allenwrench to loosen the rear of the 2 ecm plugs on drivers side of engine block
#3 use the end of a large paperclip push the red plug out of the #22 pin(3rd row down 2nd from left -facing the plug when installed)
#4 insert pigtail into plug till it clicks
#5 add about 3'' wire to pigtail (crimp/heat shrink already on pigtail)
#6 remove 10mm nut to the rear of the plug and crimp a connector onto the wire you added to fit the stud
#7 reinstall 10mm nut and 4mm allen(the 4mm wil pull the plug back together)
#8 drive to dealer to activate high idle
SEE SOMEBODY BEAT ME TO IT
so once you do this mod and connect pin 22 to ground what happens if you are driving down the freeway with the cruise on and push in the clutch? does the engine rev up or does the cruise still shut off like normal?
The cruise will shut off as normal. As long as the truck is sitting still, e-brake engaged the high idle will work. Once the truck starts moving or you hit the brakes, it disengages the high idle. I've noticed if I have the high idle engaged and the truck starts rolling and gets to 2-3mph I think it is, the high idle shuts off. It must get a signal from a wheel sensor so it will automatically disengage itself.



