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  #4921  
Old 10-21-2013, 09:12 AM
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Re: 2014 diesel production

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Originally Posted by J Pillo View Post
While we are waiting, let me ask off topic question. This will be my first diesel. I was reading the owners manual and letting it idle for extended period seems to be a no-no. I guess there would be similar issues when you are caught in stop and go traffic or is that not something to worry about?
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This would kinda defeat the remote start feature - something that I am really looking forward to when it is -20F in Minnesota.
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  #4922  
Old 10-21-2013, 09:15 AM
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Re: 2014 diesel production

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Originally Posted by Chivvalry View Post
Stop and go is not a problem at all. The issue with long low idle on a diesel is that the engine can cool down too much and fuel can get past the rings into the oil. If you intend to idle for hours frequently then you might be able to get a "high idle kit" that will bump up the idle enough to keep the engine warm and prevent that fuel leakage past the rings.

Edited to add: it is MUCH less of an issue idling for long periods with a diesel than with a gasser... a gasser idling for a long time leads to buildup and crud. Diesels love to idle.

I am NOT a diesel mechanic... this is hearsay knowledge.
Im hoping it will have the high idle like the Cummins 6.7 have on the Heavy Duty Rams. While in park if you turn on the cruise control and hit the set button...the engine will idle up to around 1100-1200 RPMs. It is an awesome feature that could be turned on by the dealer with the scan tool....hope this helps....this might be a question for one of the Jeep Reps.
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  #4923  
Old 10-21-2013, 09:21 AM
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Re: 2014 diesel production

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Originally Posted by Shannon View Post
This would kinda defeat the remote start feature - something that I am really looking forward to when it is -20F in Minnesota.
Shannon, long term idle is will past the remote spec... the 3.0 Diesel should not be left idling for an hour at a time because you are going to create an issue with the Emissions systems. There is no problem with a 10-15 minute warm up (or longer if colder) but the engine and emissions systems are not designed to continuously idle. Those operating the heavy trucks with the DEF Regen requirements understand this problem.
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  #4924  
Old 10-21-2013, 09:30 AM
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2014 diesel production

I think this is going to really be a bummer for me. If I'm traveling long distance and pull over at night into a rest area and it's cold I can't let the diesel idle if I want to sleep for a few hours??? I've always done it in my 5.7 and it's never been a problem but then to it's not a diesel.
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  #4925  
Old 10-21-2013, 09:36 AM
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Re: 2014 diesel production

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Originally Posted by 5.7 My Hemi View Post
I think this is going to really be a bummer for me. If I'm traveling long distance and pull over at night into a rest area and it's cold I can't let the diesel idle if I want to sleep for a few hours??? I've always done it in my 5.7 and it's never been a problem but then to it's not a diesel.
I really wouldn't worry too much about it.

Edited to add: Idling a diesel for an hour equates to about 25-30 miles wear and tear on the engine. Idling for long periods where the engine cools down means that fuel can, and will, get past your rings. If you idle for long periods frequently then you should change your maintenance schedule to adapt. If you only idle for a few hours once or twice a month then I really wouldn't worry about it.
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  #4926  
Old 10-21-2013, 09:37 AM
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Re: 2014 diesel production

So, those who do not like these extreme emission requirements, how did you vote, or have you voted? No need to answer, just a reminder that actions and inactions have consequences. We could have clean air without such extreme emissions controls.
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  #4927  
Old 10-21-2013, 09:46 AM
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Re: 2014 diesel production

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Originally Posted by 5.7 My Hemi View Post
I think this is going to really be a bummer for me. If I'm traveling long distance and pull over at night into a rest area and it's cold I can't let the diesel idle if I want to sleep for a few hours??? I've always done it in my 5.7 and it's never been a problem but then to it's not a diesel.
Also not likely a big problem in colder temperatures.
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  #4928  
Old 10-21-2013, 09:46 AM
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Re: 2014 diesel production

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Originally Posted by FStephenMasek View Post
So, those who do not like these extreme emission requirements, how did you vote, or have you voted? No need to answer, just a reminder that actions and inactions have consequences. We could have clean air without such extreme emissions controls.
China smog emergency shuts city of 11 million people


China smog emergency shuts city of 11 million people - PhotoBlog

I'm okay with emissions control...
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  #4929  
Old 10-21-2013, 10:01 AM
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Re: 2014 diesel production

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Originally Posted by Willx View Post
Also not likely a big problem in colder temperatures.

So if I do this just maybe two or three times a year I may be ok??? Is there any type of device I could ad that would maintain a high idle like in the old days? There was a knob you pulled out when you first started your car to keep the idle up until it warmed up; I think it was the choke.
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  #4930  
Old 10-21-2013, 10:16 AM
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Re: 2014 diesel production

Quote:
Originally Posted by 5.7 My Hemi View Post
I think this is going to really be a bummer for me. If I'm traveling long distance and pull over at night into a rest area and it's cold I can't let the diesel idle if I want to sleep for a few hours??? I've always done it in my 5.7 and it's never been a problem but then to it's not a diesel.
If the issue is the emissions control buildup and not fuel leakage into the oil, I seem to remember reading in the owners manual that when there is a buildup in the DEF system that the UConnect will actually warn you. I don't remember the exact warning. It is something like "buildup in DEF system please drive at highway speeds until cleared". I also believe that it gives you a 50% buildup warning before the 100% warning.
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  #4931  
Old 10-21-2013, 10:23 AM
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Re: 2014 diesel production

Edmunds just reported that the Cherokees started shipping this morning. Hopefully, the diesel Grand Cherokees will follow.
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  #4932  
Old 10-21-2013, 10:26 AM
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Quote:
Originally Posted by kaziii View Post
If the issue is the emissions control buildup and not fuel leakage into the oil, I seem to remember reading in the owners manual that when there is a buildup in the DEF system that the UConnect will actually warn you. I don't remember the exact warning. It is something like "buildup in DEF system please drive at highway speeds until cleared". I also believe that it gives you a 50% buildup warning before the 100% warning.
Interesting that the manual also says you are supposed to idle the engine for a few minutes before shutting down. Too much idling, not enough idling. Kind of like one week coffee or wine or chocolate are good for you and the next week someone says they'll kill you. Moderation and common sense always seems to be the key.
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