Went to new dealer cel on pooaf and other my fuel gauge is alway off by 4 gallons of fuel still in tank on empty asked them to fix they called said your tires need to be calibrated with the mopar adjustment so the turbo and all parts work together 150.00 dollars manager said that’s how we fix POOAF ask her if that don’t work are you going to fix the problem reply No. told her to do it, another dealer told me on my fuel problem it needed a new sending unit they are not adjustable this dealer said the back of the truck is 2 1/2 inches lower than the front and that’s why it registered that way BS every thing is covers under warranty they do not want to work on my JTRD I picked it up drove it to the mountains and in the same place the cel came on again had the code read POOAF nothing but lies I Don’t understand WHY
Measure at the pinch weld on the body. Just behind the front tire, and in front of the rear tire.
This definitely isn’t tied to the P00AF code. Try yet another dealer. Good you have a consistent place to test for this code. This dealer sounds dumb, do you know for sure your turbo was actually replaced?
Yes at a different dealer
Thank you I did that found a level spot checked it first with a level the front measures 22 1/2 inches the back measurement is 23 3/4 I put the level on the running boards lower in the back than the front that must be where they measured again they would not tell me where they measured or the exact numbers
There is a Guy who has a tube He said have them disable the mil flag Actuator performance faults they are strictly emission based and not necessary for vehicle operations His Disabled 30,000 mi and turbo is fine see if you can ask GDE what they sayI have been dealing with the P00AF and limp mode for some time and have been self-diagnosing the issue. The error code only occurs when towing under sustained boost conditions (uphill or passing). It seems I never have the presence of mind to bring my Mopar WiTech 2.0 dongle with me on these trips, why I don't leave it in the Jeep is beyond me. I will put it in there today.
Background: 2021 Gladiator EcoDiesel with ~30k miles. I've had the errors for about ~15k miles. I have the GDE tune, but the errors originate with or without the tune. The errors occur more frequently at ambient higher temps (+85F).
- I've removed the hood insulation, engine cover, engine insulation, and rubber seals; I have the Mojave hood with the vent open and the '24 grill.
- I contacted GDE, and they pointed me toward the turbo actuator overheating.
- I have the insane diesel bypass filter but no supplemental cooler yet.
I haven't finished logging through the ECM, but I set up a few wireless grill probes this past week when ambient temps were 70F - 95F. I placed one probe on the turbo actuator and another under the hood. I found the engine bay temps hovering about 20F—25F above ambient while on the highway and 30 - 50F above ambient while driving around town ~35mph. The turbo actuator is about 50 - 75F above engine bay temps. I found no direct correlation of limp mode to the actuator temperature, oil temp, or engine bay temp. Of course, limp mode happens at higher temperatures, but there are no perceivable trends in those measurements. I also measured the temperature of the compressor housing without a clear trend of temp to limp mode activity.
Because I was using a grill probe, I did not log temperatures or measure the turbine housing (the probe only went to 480F).
I have an appointment with the dealer next week to check out the issue for the second time. I suspect they'll replace the turbo, which seems to have fixed the problem for some people. I also ordered the Insane Diesel oil cooler and an AEM water-methanol injection system.
I plan to collect more scientific data next week before installing the new hardware. During my drive through PA and WI I observed oil temperatures reach ~265F and had the power derate issues. The oil temp primarily ranged between 245 - 260F on the factory tune.
I am not interested in deleting the Jeep. I have been there and done that on several diesels, and I am trying to remain compliant with this one.
Also, I added a 480CFM fan above the actuator/compressor housing and found no positive impact except for heat-soaked situations after the truck sat idle for an extended time.
P.S. I have condensed months of testing and research here to keep it simple; please feel free to ask questions. Based on the feedback from GDE, I was going down the path of air or water cooling the actuator and have been applying practical tests to develop and test the hypothesis. With my day job and extensive home remodeling, I have limited mental and time capacity to dive into this as thoroughly as I'd like so if this looks like throwing crap at the wall, it sorta is.
So far, I do not have a data-driven hypothesis for the cause. Despite having two ECUs (one factory and one tuned), the dealer has claimed FCA can detect the ECU changeouts and therefore I do not have warranty. They verbally quoted $6k to $7k for the turbo replacement which is crazy. Of course, I have accuair suspension, bypass oil filter, cooler, etc so body separation from the frame to perform the replacement would be even greater.
Not long after I made this post, I saw a P00AF post on the Ram EcoDiesel forum. So, I started a thread devoted to the P00AF in hopes that we can better understand it. So far, this is the data I have collected. All turbo failures have been 2021 and 2022 models, and all failures have been mostly low mileage failures. Everyone on the list below has had their turbos replaced under the 5 year/100,000-mile factory Powertrain Warranty.
