Engine/Transmission (1998.5 - 2002) More cold high idle questions

[Makensmoke]

Took my truck in week ago and had computer flashed to have no high idle. Called dealer and they said when the cold weather comes back to call them and schedule to leave it over night bla bla bla. Its been below freezing every morning and the truck has never revved up... till thismorning. 20 deg. F. and it revved up like sposed to. No 3cyl though. Now tonight, 16 deg. and no rev up or anything, again. Does my truck have a mind of its own or what? Anybody ever had this problem?

 

[TowPro]

The fact it did work once means they have the software "switch" turned on.



Mine comes on up to about 35 deg F. I have not had it cold enough for the 3cyl part to work, but if the high idle works, so will the 3 cyl part.



Now I "THINK" the trigger that turns on the High Idle is Intake Manafold Temp. So if your Intake Manafold Air Temp Sensor is telling the computer its 35 deg, when really its 25 deg outside the computer will not turn on the idle (garbage in, garbage out).



I think there cheep enough, I would try a new IMT Sensor. The dealer is going to give you the run around on this one, and to leave it there for a couple days while they play with it cost more then just buying the sensor and trying it.



Maybe somebody else can valadate the Intake Manafold Temp Sensor is the one that turns this high idle on?



The TSB says "intake temp below XXX deg" if I recall. That would point to the intake air temp sensor instead of the other temp sensors on the truck, but i'm not 100% sure as I don't have any manuals.

 

[ramman-mn]

cold idle

i had my truck software installed and thay had to call dc tecks to turn on and turn off in the ecm and my 3 cylider shut down works 15 deg it starts but if it is 22degs it will just high idle Oo.

 

[TowPro]

I was thinking about this, I don't think the Intake Air Temp sensor can be used to trigger this event. If the grid heaters are on, there is no way the air crossing that sensor is below 32 deg.

 

[jtisdale]

Originally posted by Makensmoke

Took my truck in week ago and had computer flashed to have no high idle. Called dealer and they said when the cold weather comes back to call them and schedule to leave it over night bla bla bla. Its been below freezing every morning and the truck has never revved up... till thismorning. 20 deg. F. and it revved up like sposed to. No 3cyl though. Now tonight, 16 deg. and no rev up or anything, again. Does my truck have a mind of its own or what? Anybody ever had this problem?

I have noticed with mine, after it runs a while and warms up, the truck needs to be off for at least 6-7 hours. If I start it sooner than that, the high idle function will not engage. However, I have seen it sit overnight in 20*f or less temp, and it hasent worked then either.

This morning was the first time the 3 cylinders shut down. WOW big difference in sound. It was about -2*f

EGTs with just high idle are 225 but with the 3 cylinder its about 525.

If you plug it in, it probably wont work either. I havent plugged mine in yet, so I dont know, just from what others have posted.

 

[CUMAPART]

Had the hi-idle program turned on in mine the other day when I went to the stealer. Ran it home let it sit for about 7-8 hrs before going to bed but went out fired it up to see if it would work but nothing worked! So I thought that the Cummins holds heat pretty good so I would leave it unplugged and test her out in the morning. This morning went out fired it up oil pressure came up and sure enough it idled for a little bit as the grid heater cycled and then she picked up to about 1200rpms. I was happy. DC mech said it has to be really cold out for the 3cyl shut down to happen and no hi-idle if you plug in.

 

[WestTN]

questions

It isn't the Intake Air Temperature sensor that triggers the high idle. It is the Ambient Temperature sensor. This one is installed in the bottom of the left side battey box in contact with the bottom of the battery. It's plug is mounted to the inside front corner of the battery box.

 

[Makensmoke]

Yesterday it 3cyl for the first time, the miss wasen't that noticeable it was the out of oil sound that concerned me. If this cold weather keeps up the neighbors are really gonna hate me, ooh boy will i miss em when they move!



Part of my problem must be parking it in my garage, beings it stays around 20-30 degrees in there it must keep things warm enough not to trigger everyone to turn on. Backing it out first thing i thought would cool sensors and engage noise but they aren't that sensitive.

 

[KatDiesel]

Well seeing as how its -8° here and I don't have a place to plug in at work (nights) I'm gonna try this out. Just hope I don't get a bad reflash... ... ... . I like my Power & MPG! LOL

 

[Turbo Tim 1]

Just as a note to you all, here are some of my observations. If it is really cold, -13 like this morning, and your truck is plugged in the high idle doesn't function when you start it because the heat from the engine must soak the ambient temperature sensor, but if you drive down the road 3 miles to the local coffee shop and go in to get a cup of coffee, when you come out 2 minutes later your truck will be at a high idle because the ambient temperature sensor has now been cooled off to less than 32 degrees and your engine temp is still below 140. That's what my truck has done the last two days. I have only had the 3 cylinder kick in once and it was -22 and the truck wasn't plugged in. It is an ugly sound!

 

[thepitts]

3 cyl kick in

I had the 3 cyl kick in just as my wife opened the the truck door Needless to say she bout pooed in her pants. Came in and said she broke the truck. Then I told her how it works, now she wants it on her car.

 

[Weidner]

ITS TIME TO TRY AGAIN

It is time for me to try again to get this high idle to work. Any suggestions for a Minnesota dealer or contact person for me to call that might have a clue on what to do. This -10 if pretty frosty while I sit and wait for the truck to warm-up, which it won't due until a 5 mile trip down the road. I think someone said they had it done in at Hopkins Dodge, anyone know for sure?



Help me I am cold.

 

[KatDiesel]

D-Day is next Wed. Got my appt for next Wed 8am after work..... I'll have a copy of the TSB in hand Maybe I'll have'em give me a new track bar too... ...

 

[Amianthus]

Weidner, talk to Chrysler Winona (800-211-5950) and ask for Russ in service. Tell him I (Aron) sent you, and I guarantee, he'll hook you up right. I know it's a drive, but you won't regret it. I promise. If you don't want to go that far, I think that MnCumminsLvr had his done at Belzer's Dodge. But I think they also denied his warranty claim on his failed manual transmission. Good luck.

 

[EShaw]

Guys,

In oder for this to work all you need is the tech to hook up the DRB III tool to the truck... ..... NO REFLASH NEEDED.

I work in truck sales for Warnock Dodge in East Hanover NJ... ... I took the DRB III tool to my truck and... ... . (with a little help from my friends)... ... ... enabled the 3 cylinder high idle feature... ..... AND... ... . It works... ... . of course when it shut down 3 cylinders it woke my entire neighborhood... ... ... But, so did my Harley with drag pipes!!!!!!!!!!

menu... ..... Engine... ... ... Misc... ... ..... 3 cylinder high idle... ... enable it and you're done... ... ... . It's THAT SIMPLE... .....

Enjoy,

Eric

 

[Turbo Tim 1]

Actually, early 2001's and back do not have this feature already loaded, in my truck it had to be installed and then enabled.



ESHAW - it must be nice to have that access to the dealership, most of us ask for the 3 cylinder idle and get funny looks from service writers who then say, "that's a new one on me, or never heard of it can you bring me the TSB so I can see it, or let me research it and I'll get back to you (and you never hear from them again)" These all happened to me after the program was intstalled but never turned on.

 

[mgoncalves]

Mine's at the dealer right now, hopefully they get the high idle to work the first time. I'll find out tomorrow for sure.

 

[radyvolk]

Does this high idle work with a manual transmission? I read the TSB & under conditions when this feature is automatically disabled was automatic transmission is placed in gear. There is no mention of manual transmissions in the TSB.

 

[Turbo Tim 1]

Yes it works with the manual transmission

 

[Makensmoke]

The TSB is 18-019-01



DODGERAM. INFO/TSB/2001/18-019-01. HTM



Is where I refrenced it from.



I took mine to Cummins chrysler in Pine City. I called them and the service tech actually knew what I was talking about right away. So with his confidence I took it there. It didn't work right away, took pretty cold temps for it to take off, I must have some dirt or something insulating my outside air temp. sensor. Anywho, like 72 bucks and they took about 15 min. and turned it on. (no warranty left otherwise Dodge will pay) Good luck!