Engine/Transmission (1998.5 - 2002) high idle programming

[EChild]

Can anyone tell me if it is possible to program a high idle on my 98. 5? I live in Alaska and the regular idle is not enough to keep it warm at 40 below. Ive heard that it can simply be programmed eith the existing ECM but ive also heard that it was never available for the 98. 5. Do I need to have cruise control for this? My truck is a manual 5 speed. Any info would be appreciated.

 

[HBarlow]

There is no programming in the ECM of Gen II Cummins-powered Dodges to fast idle the engine. Install a Jacobs Exhaust Brake. When I was transporting RVs I used to idle my '01 HO/six speed for hours with the exhaust brake closed to keep the combustion chamber temp up and provide heat to sleep in the truck. I had to do that a few times in sub freezing weather when I got stuck in an area that wouldn't allow my companion, a female German Shepherd, in local motels.

 

[darkhorse]

The Smarty has a high idle & the Banks Brake closes at idle in the cold.

 

[blacksheepdiesel]

Some guys have installed a switched solenoid to achieve fast idle.

Godspeed,
Trent

 

[bromano676]

what about the three cylinder, high idle reflash? wasn't that for 2nd gens

 

[Allnew2Me]

Not too long ago there was a fairly extensive post on another forum about using the APPS to perform a high-idle function by tapping into the wiring with a potentiometer. The user then could dial in the idle speed with the pot. It works by varying the voltage to the idle circuit to increase/decrease voltage to adjust the idle speed.

I can't seem to find it but I'll try to post a link if I do.





Edit to add link to high idle post. http://www.dieseltruckresource.com/dev/apps-high-idler-t123156.html?t=123156

 

[georgej]

It was available on my 2001 and can be activated at the dealer or using the "smarty" power box.

 

[georgej]

It was available on 24 valve engines and can be activated at the dealer or using the "smarty" power box. After meeting certain parameters it will ramp up the idle speed and go in to 3 cylinder operation.

 

[HBarlow]

The high idle function was not in the ECM programming or available by having the dealer activate it until MY 2005.

The capacity of earlier ECMs was not large enough to provide features like that.

 

[bromano676]

TSB 18-019-01



Cold idle engine warming.

This bulletin involves selectively erasing and reprogramming the Engine Control Module with new software. This bulletin applies to all Ram trucks built after December 17, 1997 equipped with the 24-valve 5. 9L Cummins diesel engine.



Extended idle operation, especially in cold weather, can allow varnishes/oils to condense on the exhaust valve stems, leading to stuck valves, and damaged valve train components. The repair procedure involves calibration software that will activate when certain parameters are met, reducing the chance of valve sticking as well as improving cab heat warm-up time. Idle speed will slowly ramp up from 800 rpm to 1200 rpm when all of the following conditions are met:

* Intake Manifold Temperature less than 60°C (32°F)

* Coolant Temp is less than 60°C (140°F)

* The transmission is in Neutral or Park

* The Service Brake pedal is not depressed

* Throttle = 0%

* Vehicle Speed = 0 mph



If intake manifold temperature (IMT) is less than -9°C (15°F), three of the cylinders will be shut off upon reaching 1200 rpm, creating a slight change in engine sound which is normal. Thus the engine has to work to overcome the three “dead” cylinders. This allows the engine to create increased heat in the cooling system, allowing more rapid warm up.



Either feature will abort when any one of the following occurs:

* The automatic transmission is placed in gear (forward or reverse)

* The service brake pedal is depressed

* Throttle position is greater than 0%

* Vehicle speed greater than 0 mph

* Coolant temperature is greater than 79°C (175°F)

 

[WTBurke]

EChild... welcome to the TDR.

This information from Moparman may very well do everything you need to obtain high idle after warm up. The componants are very simple and you only need to remember to disengage the "forced functions" prior to letting your foot off the clutch. Long idle in minus 40F will cause your 24V some trouble and having the idle at 1100 RPM really helps. I'm in Butte Montana every so often and I like having high idle on demand.



Good Luck

William

 

[JCyrbok]

TSB 18-019-01



Cold idle engine warming.

This bulletin involves selectively erasing and reprogramming the Engine Control Module with new software. This bulletin applies to all Ram trucks built after December 17, 1997 equipped with the 24-valve 5. 9L Cummins diesel engine.



Extended idle operation, especially in cold weather, can allow varnishes/oils to condense on the exhaust valve stems, leading to stuck valves, and damaged valve train components. The repair procedure involves calibration software that will activate when certain parameters are met, reducing the chance of valve sticking as well as improving cab heat warm-up time. Idle speed will slowly ramp up from 800 rpm to 1200 rpm when all of the following conditions are met:

* Intake Manifold Temperature less than 60°C (32°F)

* Coolant Temp is less than 60°C (140°F)

* The transmission is in Neutral or Park

* The Service Brake pedal is not depressed

* Throttle = 0%

* Vehicle Speed = 0 mph



If intake manifold temperature (IMT) is less than -9°C (15°F), three of the cylinders will be shut off upon reaching 1200 rpm, creating a slight change in engine sound which is normal. Thus the engine has to work to overcome the three “dead” cylinders. This allows the engine to create increased heat in the cooling system, allowing more rapid warm up.



Either feature will abort when any one of the following occurs:

* The automatic transmission is placed in gear (forward or reverse)

* The service brake pedal is depressed

* Throttle position is greater than 0%

* Vehicle speed greater than 0 mph

* Coolant temperature is greater than 79°C (175°F)

I have this TSB enabled on my 01. 5. Works great but scares the crap out of you when you hear it switch to the 3 cylinder cut out, LOL. it was enabled by the dealer. It is however not selectable or user activated ie: you want to high idle after you have warmed up say while fueling up. It only works when the above parameters are met. Also I'm pretty sure thaty it only works on Auto trans trucks, but not positive.



J-

 

[SSolderitch]

3 cylinder cutout works in manual transmission also. Dealer reflashed my ecm with a newer program? and I got this by suprise.

 

[SHobbs]

I am curious if we change the temperatures that activate the high idle or three cylinder idle using the Smarty. Here in Texas is does not get that cold and it would be nice to plug in the Smarty and change the high idle to say around 45 degrees and the three cylinder idle at or under 30 degrees.

 

[WTBurke]

I don't have the chart in front of me for the basic DC resistance of the IAT sensor but, this little circuit fools the ECM into thinking it's colder than it really is. Now... up to a point where the engine block temperature reaches a level where that data supersedes the IAT data you can engage high idle at any point you select. The flash of the ECM is only necessary to enable these functions to occur. Once that's done at a dealer or with your Smarty the little switches create the conditions in order for the high-idle and or 3 cylinder drop-out to actually take place.



William

 

[bromano676]

I have been looking to do this, but I do not trust my local dealers. Smarty is the only other way right?



Can I load just this from the smarty or do i need to put ion everything from the smarty?

 

[SnoKing]

I have been looking to do this, but I do not trust my local dealers. Smarty is the only other way right?



Can I load just this from the smarty or do i need to put ion everything from the smarty?

You load any Smarty program and when you restore it to stock, you get the latest code with it enabled.



SNOKING