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  #97  
Old 08-20-2014, 11:25 AM
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Re: exhaust system regeneration process

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Originally Posted by MBDiesel View Post
Oil temp should not change appreciably. The heat is mostly generated by burning fuel inside the DPF rather than in the engine. You'll find that EGT is actually several hundred degrees less than DPF temp during a regen.
Same observation here. All the heat is downstream. If anything, the diesel injected during the exhaust stroke doesn't ignite and should cool the cylenders.

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  #98  
Old 08-21-2014, 12:08 AM
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Re: exhaust system regeneration process

Quote:
Originally Posted by MBDiesel View Post
Oil temp should not change appreciably. The heat is mostly generated by burning fuel inside the DPF rather than in the engine. You'll find that EGT is actually several hundred degrees less than DPF temp during a regen.
Okay, that makes sense....

edit: the only other thing I was thinking was that with the EGR valve being closed, combustion temps would be higher....
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  #99  
Old 08-23-2014, 11:54 PM
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Re: exhaust system regeneration process

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Originally Posted by Grady2014 View Post
I have 7200 miles on my Summit and never saw this message until two weeks ago after I put fuel in from a station that I normally don't use. Now I've seen it twice.
I got it for the first time also. Mine occurred after lots of idling over a couple days without being driven. It unexpectedly went away after a few minutes of stop and go city driving.
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  #100  
Old 08-24-2014, 12:02 AM
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Re: exhaust system regeneration process

Now the rest of the story... Driving 700 miles (over 500 towing) after getting the regen in progress message I got error P202E (grrrrrrrr). The error stayed on towing 500 miles back home. I need to get the flash in the famous TSB: 18-018-14 REV. C
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  #101  
Old 12-08-2014, 01:03 PM
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Re: exhaust system regeneration process

At 7500 miles I got the regen message. I completed the regen and at 8000 miles, on the same trip it got the maintain highway speed. I maintained 80 MPH for 2 hours and the message never went away. I stopped for fuel and it went right into limp mode. Had to drive for 3 hours to get back into civilization, out in the middle of Nevada desert, where I could get towed. They did a manual regen and so far it is OK. It had the upgraded flash. They could find no reason for the filling of the DPF.
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  #102  
Old 12-12-2014, 10:54 PM
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Re: exhaust system regeneration process

I've got the regen message twice. Once at 24 miles. Brand new off the lot. And once around 7400 miles. Both cleared and completed. At 17500 miles with no problems.


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  #103  
Old 12-14-2014, 06:08 AM
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Re: exhaust system regeneration process

My GC has had the exhaust filter message come on twice,saying to drive at highway speeds, but with limp mode you can drive for hundreds of kilometres and does no good.
I live in Australia but have never had any warnings about this problem, The first time it came on was a few weeks after towing my van to Queensland, should have blown out any accumulated particles, any advice ?



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  #104  
Old 12-22-2014, 10:21 PM
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Re: exhaust system regeneration process

Mines done this three times; last at 8900. Stuck in limp mode; lights on dash and filter blocked message. Dealer replaced exhaust temp sensor last time and it not working again or the Computer and it are not talking.
Jeep in dealers for two weeks now with a promise to repair by mid jan...bec part coming from USA.
Whether this will fix it is next issue
So im staying home this holidays....
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  #105  
Old 01-05-2015, 06:57 PM
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Re: exhaust system regeneration process

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Originally Posted by brisand View Post
My GC has had the exhaust filter message come on twice,saying to drive at highway speeds, but with limp mode you can drive for hundreds of kilometres and does no good.
I live in Australia but have never had any warnings about this problem, The first time it came on was a few weeks after towing my van to Queensland, should have blown out any accumulated particles, any advice ?



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The Australian system is different to the USA system but apparently based on the US one not like the earlier systems in the MY13 models which were built in
Europe. Fiat Chrysler Australia has released a software update - released in Australia on the 19 the December that they assure will fix this problem - however they are not issuing it as a recall but they will apply it if the vehicle is towed into a dealer or at your next service. So those without this upgrade can sit on their time bomb and hope it doesn't go off before the next service at a dealer.
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  #106  
Old 01-05-2015, 07:42 PM
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Re: exhaust system regeneration process

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Originally Posted by dixonf View Post
The Australian system is different to the USA system but apparently based on the US one not like the earlier systems in the MY13 models which were built in
Europe. Fiat Chrysler Australia has released a software update - released in Australia on the 19 the December that they assure will fix this problem - however they are not issuing it as a recall but they will apply it if the vehicle is towed into a dealer or at your next service. So those without this upgrade can sit on their time bomb and hope it doesn't go off before the next service at a dealer.
Surely they should notify owners as it can occur somewhere where there is no dealer nearby to have it corrected.
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  #107  
Old 01-05-2015, 07:52 PM
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Re: exhaust system regeneration process

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Originally Posted by aak274 View Post
I've got the regen message twice. Once at 24 miles. Brand new off the lot. And once around 7400 miles. Both cleared and completed. At 17500 miles with no problems.
I've had the regent once at ~5k, was doing heavy traffic and stop and go.. at 20k, running smooth,,
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  #108  
Old 01-05-2015, 10:37 PM
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Re: exhaust system regeneration process

So are the bigger trucks Chevy, Dodge, Ford diesels, dealing with this DEF system regen problems also?? I follow a RV forum and haven't seen any mention of it. It is just ridiculous that I'm driving an expensive 4x4 high technology vehicle and have to worry about going into limp mode at any time. I drove a 2005 Duramax for years with never a worry. If it wasn't for this I would have a lot more confidence in this Jeep.
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