heater warm up ?

Range Maggot Bob wrote:
ktmrfs- sounds good. Butttttt- maybe I'm still not understanding- can you set it so the exhaust brake comes on or not? Cause if not, it doesn't do me any good; I'm not going to let my truck set there 15-20 minutes idling. And- the diesel supplement. Thanks for that info! I knew it existed and had always planned on getting and reading it, but completely forgot. Again, thank you very much. Very informative.

yes, the auto warm up cycle bumps the idle speed AND sets the turbo (exhaust brake) for max backpressure. Mine will warm up in 5 minutes or so.

instructions are either in the diesel suppliment or the infosystem configuration menu description.

ktmrfs- sounds good. Butttttt- maybe I'm still not understanding- can you set it so the exhaust brake comes on or not? Cause if not, it doesn't do me any good; I'm not going to let my truck set there 15-20 minutes idling. And- the diesel supplement. Thanks for that info! I knew it existed and had always planned on getting and reading it, but completely forgot. Again, thank you very much. Very informative.

Range Maggot Bob wrote:
ktmrfs- Okay, I'm going to get my manual out and try it. Never remember reading about that in my manual, but if you say it's so, I will find out. As far as the high idle set with cruise control, I have to disagree. In high idle with exhaust brake on, my truck, as I said before, is warm and toasty in 5 minutes. Thanks for the info!

the info on setting the automatic "warm up" is in the diesel supplement. On my 04.5 w/o the DIC the procedure involved turning ignition on, hitting either gas or brakes x times in y seconds then turning the ignition off. Once set it would come on whenever I started the truck under cold enough conditions with parking brake set etc. etc.

On my 15 Denali with the DIC it is set in the setup screen and you either turn it on or off. again, once set it will come on automatically.

Range Maggot Bob wrote:
ktmrfs- Okay, I'm going to get my manual out and try it. Never remember reading about that in my manual, but if you say it's so, I will find out. As far as the high idle set with cruise control, I have to disagree. In high idle with exhaust brake on, my truck, as I said before, is warm and toasty in 5 minutes. Thanks for the info!

yes, the exhaust brake helps the warmup. but if you don' turn on the exhaust brake, then it takes a long time to warm up.

ScottG wrote:

bguy wrote:
Option #2, but you don't need too many extra RPM.

X2.
This one is more to the guidelines Cummins gives.

(Sorry, off topic) The thing I don't understand is how new gas engines warm up so fast.
The 6.4L in our other Dodge starts blowing nice warm air within 30 seconds of starting no matter how cold it is outside. Almost makes me think there's a electric coil in there.

You may be correct. I have an early Prius that does in fact have an electric ceramic heater that blows heat within 30 seconds until the water warms up.

ktmrfs- Okay, I'm going to get my manual out and try it. Never remember reading about that in my manual, but if you say it's so, I will find out. As far as the high idle set with cruise control, I have to disagree. In high idle with exhaust brake on, my truck, as I said before, is warm and toasty in 5 minutes. Thanks for the info!

Range Maggot Bob wrote:

ktmrfs wrote:

Turtle n Peeps wrote:
Gas or diesel? Yes, it does make a difference.

actually on a remote start and warmup, my diesel warms up pretty darn fast as long as the factory cold start high idle is enabled. Unlike diesels of old, on mine it bumps the idle to about1200 rpm and puts the turbo vanes in max backpressure position. 5-10 minutes and it's up to temp.

start cold and drive takes longer to warm up.

Both my cars will warm up pretty quick idling but faster driving. they both adjust shift point upwards quite a bit on cold start to get the engine to warm up quicker.

Yours must be different than mine. How do you set the high idle when starting with a remote? I have to physically engage it after I start my engine, then I turn on the exhaust brake, and in 5 minutes my cab is warm and toasty. That's why I was never interested in a remote start, cause I didn't know how to do the high idle thing, and the exhaust brake thing. Please- educate me! Thanks!

As far as the original question goes, I myself have always been a warm-up-in-the-driveway guy- when talking gas.

there are two high idles. the one you set with the cruise. it really does not do much for warmup time. it's basically high idle for power take off (PTO). turning on the exhaust brake probably helps.

the other is the high idle for warmup. the manual says how to enable it. how depends on if you have the DIC or not. once enabled it will engage anytime you start when conditions are met.
Once engaged idle goes up, and the exhaust brake is set for max backpressure.
conditions for engaging are
1) temps for water jacket and outside below limits, around freezing
2) parking brake set, transmission in park,
3) no foot on the brake or accelerator.

will engage with either remote start or start from a key.
Does this as far back as the 04.5 LLY, used it quite often on that truck even w/o remote start
Set it up in the DIC on my 15 denali. again works quite well.
default is OFF so you need to look at the manual on how to enable it to automatically come on.

wanderingbob wrote:
Assume that the only issue was to get heat into the truck cab as soon as possible ! Would you start truck and get up to up to highway RPMs and speed quick or would you maybe travel slower in a lower gear

With your Cummins there is an easy way.

#1 Plug in your block heater. Even in the sub zero weather I've had lately, the block heater significantly reduces the time it takes to get to operating temperature. I put mine on a 15amp outdoor timer and have it set to come on at 4AM. That gives me about 3 1/2 hours of heating time. The other benefit is starting is a snap and I usually don't need to use the heater grid either.

#2 Use the built-in warm up feature. I claim to be no expert as I just learned this last night while browsing youtube and came across a video titled Fastest Way to Warm Up Your Cummins. While idling, the process involves turning on your exhasut brake, turn on cruise control, then press Set. This will raise idle speed to 1,000 RPM. I tried it this morning and it worked like a charm.

KJ

It was -31 this morning, -41 with wind chill in my town today. That is really cold. My vehicle even with the engine getting to operating temp will not fully warm up in the interior, unless I drive around for about 30-45 minutes, probably will take longer. No vehicle will...in these temps.

So what do I do ? I dress warmly. Heavy parka, heavy layers underneath, real winter boots, Mountie style trapper hat if needed, lined on the inside, heavy hide 'garbage' mitts, etc.

I'm wondering why the 'cold' at just above or just below freezing temps, is an issue ? :D

ktmrfs wrote:

Turtle n Peeps wrote:
Gas or diesel? Yes, it does make a difference.

actually on a remote start and warmup, my diesel warms up pretty darn fast as long as the factory cold start high idle is enabled. Unlike diesels of old, on mine it bumps the idle to about1200 rpm and puts the turbo vanes in max backpressure position. 5-10 minutes and it's up to temp.

start cold and drive takes longer to warm up.

Both my cars will warm up pretty quick idling but faster driving. they both adjust shift point upwards quite a bit on cold start to get the engine to warm up quicker.

Yours must be different than mine. How do you set the high idle when starting with a remote? I have to physically engage it after I start my engine, then I turn on the exhaust brake, and in 5 minutes my cab is warm and toasty. That's why I was never interested in a remote start, cause I didn't know how to do the high idle thing, and the exhaust brake thing. Please- educate me! Thanks!

As far as the original question goes, I myself have always been a warm-up-in-the-driveway guy- when talking gas.