Ecodiesel Derating issue tracking thread - also please post if NO issues!

[rharr]

I do for sure, I haven't needed to pull it out since I never had any issues until now.

I attributed most of it to be being hot AF outside as well as going fast for a long period of time

No, i just did a trip 2 weeks ago, 109 out and average 75mph or more with trailer no derate.

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[Jeepasaurus_Rex]

That sounds related to the the wiring issue that has been pointed out a few times.

I derate when oil hits 268, but it’s silent, no dash lights etc…

Mine hasn't been anywhere close to that, that I've seen. What about your coolant temp?

 

[CreepyJeepy]

Mine hasn't been anywhere close to that, that I've seen. What about your coolant temp?

Towing at altitude is very hard with engines that produce a lot of heat.

Here is an image of me towing 3700lbs on a warm 85 degree day at 8000’

Pushing some grades obviously

https://share.icloud.com/photos/095sTMLiWD4ddhoei0wII4Wbw

266 oil, 244 coolant

If you tow trailers at altitude, there is significantly less air mass to flow through and extract heat from the radiators, and with significant strain / high demand on the engine temps rise.

This is why I fully vouch the gladiator isn’t a great full time towing vehicle. While it can you really need to take it easy / slow at altitude due to the smaller radiator system.

 

[wildtaco]

Wanted to document my first issue with derating/exhaust system issue, over an accumulated 91k miles (between 2 jeeps) behind the ecodiesel!

It was 110°outside, I was going 82mph (cruise control on), coolant temp climbed to 238, oil temp to 246, Trans temp 201... 60 miles East of Roswell NM.

At this point I had been driving a continuous 7 hours straight with the exception of one fuel stop.

While holding at 82mph I had a sudden loss of power, and dash lights come on.

ESS, CEL, and the Lightning Bolt as well as message "Exhaust System Service Required, See Dealer". The Jeep wouldn't allow me to increase speed at all, but I was able to maintain speeds on flat ground. Going uphill would slow me down and never go back up until I went downhill or got back on level ground.

I limped it the last 60 miles to Roswell in 5th gear (manual mode) to jeep the rpms up in hopes of forcing a regen.

When I arrived in Roswell I let it cool down for a bit, checked for water in the fuel (none found), and then used my Tazer to pull codes as well as reset them all.

After hanging out there for about an hour, I turned it back on and carried on my way as planned. No more issues the rest of the trip, though, the Jeep would get pretty hot. This was about 600 miles into my trip, trip total finished around 2,800 miles over 10 days.

Temperatures averaged
Coolant: 210-232
Oil: 225-244
Trans: 197-201

I have had no issues with derating or power loss since.

I just came back from an almost 8000 mile cross country road trip. I was towing my RPOD weighing just under 3,700lbs loaded. I experienced derating/limp mode exactly the same as described by @Jeepasaurus_Rex, except it was multiple times throughout our trip. It kept happening more often as time went on. I noticed that letting the Jeep cool for 10-15 minutes would allow us to drive a couple hours without issue.

I was monitoring oil temps constantly which were anywhere from 220-255 at the most but mostly hovering in the 235-248 area. I have DTCs for turbo underboost, DPF clogged/blocked, egr blocked, soot levels over threshold, and particulate matter sensor. Will be bringing it in to my local dealership soon.

I have fully lost confidence in the truck. I was extremely happy with the Jeep, specifically the diesel, but this has been a really disappointing experience.

 

[Ericshere03]

Anyone notice their coolant temperatures running cooler with a tune? I am wondering how much a stage 2 tune will help coolant temperatures now that the 2 EGR systems are NOT sucking out heat from the exhaust.

 

[ParatusExpeditions]

Anyone notice their coolant temperatures running cooler with a tune? I am wondering how much a stage 2 tune will help coolant temperatures now that the 2 EGR systems are NOT sucking out heat from the exhaust.

Focusing on temps what you should observe in a situation where EGR is off/malfunctioning is:
- Low load: Engine temperatures rise (more O2, less inert gas), but coolant temperatures might decrease slightly due to the EGR cooler being inactive.
- High load: No major effect, since EGR is typically off anyway to allow for adequate O2 intake.

Stage 2 is hard to answer it depends on what the tuner would do to the engine entirely I guess?

 

[Ericshere03]

Focusing on temps what you should observe in a situation where EGR is off/malfunctioning is:
- Low load: Engine temperatures rise (more O2, less inert gas), but coolant temperatures might decrease slightly due to the EGR cooler being inactive.
- High load: No major effect, since EGR is typically off anyway to allow for adequate O2 intake.

Stage 2 is hard to answer it depends on what the tuner would do to the engine entirely I guess?

It’s been unclear the EGR schedule on these diesels, what you’re saying sounds like gas EGR schedule. Basically EGR is only used under low load.

if that’s the case, then I can see turning off the EGR not making that big a difference.

 

[ParatusExpeditions]

Speaking about the temp only, yes, I suspect not much.

I don't have access to an EGR map to confirm whats the schedule but there's a tuning thread where people cloned their ECU. They would have access to their maps to confirm how things really work from factory config at least. Once a tuner got their hands on it, its only guesses since they all are so secretive about what they change.

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