Im guessing thats what mine would do, i had no idea id always hit the brake cause it sounded like crap and i thought something was wrong

Whats the point of a 3 chlinder high idle?

@@6literfuelaholic655 possibly less cooling oil capacity needed for 3 cylinder instead of all 6 but I really don’t know since normal that idle would occur when very cold I’d assume it would be to have to cool as little as possibly while still warming oil. I generally don’t have much to do with Cummins engines too much so I can’t be sure tho.

@@thetexorcist2235 makes sense, yeah ive been a 7.3 owner since i was a kid, bought my first 12 and 24 valves had them for a year and scrapped the 12 vakve and sold the 24, keot the 12 vakve engine for when my new 6.0 shits the bed though

@@6literfuelaholic655 the purpose of the 3 cylinder high idle is to warm up the engine a bit faster and creates higher egt’s by injecting the same amount of diesel with less cylinders

Oh it sounds terrible...lol...but it does help significantly.

@johnhersom6002 my 12valve goes into cyl mode too. But its just because it's too cold to fire on all six 🤣

I believe this feature is enabled on all cummins ECM's....it's just a matter of whether the feature is enabled or not. Mine did not do this until I plugged a Smarty Tuner into it. Once I did that, it started to do it. I enable anything from the smart, all I did was plug the Smarty in and tun it to whatever level I was tuning to and it did it for me. Once I sold the Smarty and put the truck back to stock config, it kept the settings and I still have high idle.

I think you answered it... power steering?

Yes, that was the power steering pump. It always had a little whine but especially bad in the winter.

@John Hersom thanks! My '94 Ram 1500 did it in cold temperatures, and my '02 Ram 2500 does as well.

Funny thing is, you’d think it was low on fluid or the pump is going out…. Mine made this noise from the day I bought it for the 10 years I owned it!

Give me some -30 weather and I'd be happy to

Mhm grid heater

You honestly think I don’t know that? Now had I called it a “Cummings” then one could assume I didn’t know what I was talking about. Lord have mercy though I can’t believe I referred to them as glow plugs and not grid heater. I usually despise when people do that. My apologies for wording it wrong but I do know that my truck does not have glow plugs.

Some people are interested in seeing the entire process while others like yourself only want the dessert.

@@johnhersom6002 I'm interested in the whole meal so thank you

@@johnhersom6002facts

Gave it away for $12,750

@@johnhersom6002 if only i could have been at the right place at the right time.

It was, sold it a month ago

Sold it yesterday actually.

What about them?

Cummins don’t have those

This is cold, -40 just aint right! We only hit that with windchill here in Iowa.

It is Cutting three cylinder to. put a load on the engine to warm it up faster. No Egr to warm it like the newer engines

Yep 3 cylinder high idle is a thing on the 2nd gen 24v engines

It really does warm the truck up much faster. It'll stay in 3cylinder high idle up until you put your foot on the brake. It doesn't stop once engine reaches optimal temps.

Well it is. Don’t believe if you don’t want, you’re wrong

Yes they do. High compression requires more powerrrrr

That’s moronic

@@wyo_garage20 drains so much power they start fine without them

@@Bigbodysquid250x No they don’t. I’ll assume you don’t live anywhere cold, I do, and can tell you 100% when the temps get close to 0 or below, you absolutely need a grid heater. No ifs ands or buts about it. Why would one willingly disable their truck, sit there and crank more than needed, when they can simply fire it up with a grid heater? Cool kids crowd?

I have to agree with @wyo_garage. Iowa winters can be brutal and I can’t imagine trying to stay this thing without a grid heater.

@@johnhersom6002 im in california mate

No I meant oil pan heater. I added an oil pan heater and use that rather than the block heater because if I use the block heater than it won’t go into high idle or three cylinder motor no matter how cold it is outside

Well I got a 1995 dodge dually that’s really dirty

😂

Thank you , appreciate it. Hope your day gets better

I see that you are a very knowledgeable experienced diesel mechanic NOT lol

@@johnharty5757 You just might be surprised there son. I still say that unit needs some work to bring it up to snuff. But you do you, 2 yr old video, 4 months to answer. Lol

@@kenuber4014 More pride than brains I see Still haven't proven that you know a damn thing about anything I just love how all of you idiots on KZfaq that don't know anything resort to thus childish display when they have no clue about the age of the person that they are talking too I don't care how old the video is it is not like it is a news cycle I stand by the fact that you do not know shit about diesel engines keep making a fool of yourself lol

@@kenuber4014 in the future maybe you should keep your mouth shut rather than trying to impress everyone because you're not impressing every when you're just making an ass out of yourself

I guess I mislabeled the title of the video. I wasn't trying to 'show off' how well it started in the cold weather or have a peeing contest for the coldest Cummins start...I was just wanting people to hear what the high idle and 3 cylinder mode sounded like because I think it's pretty neat.