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Old 04-21-2014, 11:33 AM
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Does the DPF regen system make Diesel unusable as a full time work vehicle?

Reading about the regen system and am more than a little concerned. I'm this close to purchasing a JGC Ecodiesel, but here's what worries me. My vehicle is basically my office. I drive 30K a year, sometimes on freeways, sometimes but poking around town...no rhyme nor reason to when I do what...all depends on the job I'm working on at the time. I also drive clients around from location to location. In gasser, this is all no problem...but I'm a bit freaked out about the notion that my car could suddenly go into limp mode, or tell me I have to drive on a freeway for an hour. WTF? What happens if I'm in the middle of a job, where time is critical and/or clients are in the car and we have to get to where we're going?

Basically, from what I can tell from reading here, the Ecodiesel cannot be used as a "have to get anywhere at anytime/must be reliable" work vehicle...aside from all the other various bugs and whatnot which seem to be getting worked out...simple because of the DPF system.

Am I wrong about this?
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Old 04-21-2014, 12:44 PM
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Re: Does the DPF regen system make Diesel unusable as a full time work vehicle?

I don't own a JGC Ecodiesel, but am doing research as I am interested in one. But IMO, this vehicle is best suited for those diesel enthusiasts who are willing to give that extra attention to detail, especially when it comes to regens. But I'm sure there will be folks who are not enthusiasts and will never have an issue with their DPF filling up. It may just depend on your most frequent commuting style. If you do nothing but city driving you will be more likely to have a problem not getting on the highway to initiate a regen. If you mostly do highway driving you probably wont run into this issue. IMO diesels excel at being most efficient when you drive them far at a constant speed. If you're stuck in traffic a lot, a hybrid is probably the better bet. In my 2013 Passat TDI, one doesn't have to be at highway speeds for a regen to happen. I've read a few posts about folks and their JGC Ecodiesels going into limp mode due to the DPF getting full. Maybe if this happens to enough folks, then maybe Chrysler may change the criteria for the JGC Ecodiesels to go into regen and not have to be at highway speeds.
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Old 04-21-2014, 01:02 PM
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Re: Does the DPF regen system make Diesel unusable as a full time work vehicle?

If you drive 30K a year I doubt you will ever see a condition that strands you because the particulate filter if full. This technology is also on most the diesel trucks like Chevy-Ford-Dodge and I have heard no issues about problems there.
If you poke around in town or idle a lot it might happen but you would have to do that for a long time and in colder weather...
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Old 04-21-2014, 02:49 PM
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Re: Does the DPF regen system make Diesel unusable as a full time work vehicle?

I drive 30k for business and choose the JGC Diesel as my business vehicle. I believe it would be nearly impossible to have a DPF issue with that many miles driven a year. I have yet to see a message on my dash warning me to drive so it can regen over the last 13k miles. I took delivery in November last year.
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Old 04-21-2014, 05:29 PM
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Re: Does the DPF regen system make Diesel unusable as a full time work vehicle?

I think you are over thinking it.
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Old 04-21-2014, 06:12 PM
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Re: Does the DPF regen system make Diesel unusable as a full time work vehicle?

I just had the "DPF full" triggered limp mode. It appears that the ONLY reason it went into limp mode was because of the stupid oil life counter. Had that been properly reset (and had I been able to do it, which is another concern for another day), I wouldn't have had an issue.

That said, you couldn't pry my Jeep from my grip. Yes, I am an enthusiast, but I won't put up with crap. This was a weird cascade of events that shouldn't have happened, and will likely impact less than 0.01% of the EcoDiesels out there.

Your biggest concern should remain the other nimnuts on the road...
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Old 04-21-2014, 06:49 PM
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Re: Does the DPF regen system make Diesel unusable as a full time work vehicle?

I'm at 9k miles since November of the kind of mixed driving you are talking about - including hours of idle time. No DPF issues here.


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Old 04-21-2014, 08:56 PM
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Re: Does the DPF regen system make Diesel unusable as a full time work vehicle?

I have ecodiesel in my new jeep not worried about DPF as also have a Ram 3500 and never had a problem with it
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Old 04-22-2014, 12:44 PM
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Re: Does the DPF regen system make Diesel unusable as a full time work vehicle?

Quote:
Originally Posted by adw_tdi View Post
I just had the "DPF full" triggered limp mode. It appears that the ONLY reason it went into limp mode was because of the stupid oil life counter. Had that been properly reset (and had I been able to do it, which is another concern for another day), I wouldn't have had an issue.

That said, you couldn't pry my Jeep from my grip. Yes, I am an enthusiast, but I won't put up with crap. This was a weird cascade of events that shouldn't have happened, and will likely impact less than 0.01% of the EcoDiesels out there.

Your biggest concern should remain the other nimnuts on the road...
Wait - what? Regen was bypassed just because of the oil life reminder? That might explain what happened to me too. Is that by design? Seems like it would cause a bunch of dealer visits.
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Old 04-22-2014, 01:13 PM
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Re: Does the DPF regen system make Diesel unusable as a full time work vehicle?

Quote:
Originally Posted by gme2815 View Post
Reading about the regen system and am more than a little concerned. I'm this close to purchasing a JGC Ecodiesel, but here's what worries me. My vehicle is basically my office. I drive 30K a year, sometimes on freeways, sometimes but poking around town...no rhyme nor reason to when I do what...all depends on the job I'm working on at the time. I also drive clients around from location to location. In gasser, this is all no problem...but I'm a bit freaked out about the notion that my car could suddenly go into limp mode, or tell me I have to drive on a freeway for an hour. WTF? What happens if I'm in the middle of a job, where time is critical and/or clients are in the car and we have to get to where we're going?

Basically, from what I can tell from reading here, the Ecodiesel cannot be used as a "have to get anywhere at anytime/must be reliable" work vehicle...aside from all the other various bugs and whatnot which seem to be getting worked out...simple because of the DPF system.

Am I wrong about this?


Good question and this is what made me go with a gas engine over the diesel. Well, also the fact that the savings in mileage would be eaten up by the increase in $/gal cost of diesel over gas. But I was concerned of the "extra" maintenance the diesel would require. Guess I should have done more research on that issue...
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Old 04-22-2014, 06:30 PM
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Re: Does the DPF regen system make Diesel unusable as a full time work vehicle?

Quote:
Originally Posted by walt_mink View Post
Wait - what? Regen was bypassed just because of the oil life reminder? That might explain what happened to me too. Is that by design? Seems like it would cause a bunch of dealer visits.
Regen creates higher temperatures in the exhaust. The turbo has engine oil lubrication. Perhaps depleted oil won't handle a regen so it is not permitted to prevent turbo failures. Just an idea.

I would love to know the actual reasoning behind this if it is a fact that oil life shuts down regens which causes limp mode.
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Old 04-23-2014, 06:05 PM
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Re: Does the DPF regen system make Diesel unusable as a full time work vehicle?

Since delivery in Nov 13 and 8,900 miles, I have yet to recognize a regen event. I drive Houston TX metro area traffic which is a mixed bag -- some days it's a raceway, sometimes it's part parking lot. I am averaging ~26 mpg.


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