List All Engine/Tranny Issues with the 3.0 Diesel

[Adv_aw8s]

I love it. Almost 20k on it now. The 8hp75 still will not hold a gear on CC in the hills and I have to lease it in M7 or M8. Outside of that, I am very happy. 23-24 mpg with the Mopar lift and 37" KO2's. That is my review on their website.

Good to hear. Did you regear? I'm lifted on 37's also and regeared to 4.56's and I'm much happier with how it drives. Holds 8th again really well on CC through Colorado. It just seems to shift and drive better!

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[Jtaugner]

I love it. Almost 20k on it now. The 8hp75 still will not hold a gear on CC in the hills and I have to lease it in M7 or M8. Outside of that, I am very happy. 23-24 mpg with the Mopar lift and 37" KO2's. That is my review on their website.

Did you order any other parts with the Mopar lift? Been looking at the Mopar Lift but wasn't sure if I needed other parts as well.

How's the Diesel do with the 37's? Feel like you need a regear?

 

[AdvEddie]

I think for the most part the engine is a pretty reliable platform and the issues you encounter may vary depending on your use case.

The biggest issue for me and many others is the engine heat issue. These motors build heat very fast especially when you are on the turbo a lot. So maintaining speed on the freeway with any load is an issue. I personally don’t feel that diesel meets it’s stated use cases when people (like me) are having temp issues without even towing. Other than that it has been pretty reliable for me and the mileage has been decent.

Powerwise definitely better than the gasser and a tune solves all the drivability problems (latency, dead pedal etc.)

 

[Terpsmandan]

Did you order any other parts with the Mopar lift? Been looking at the Mopar Lift but wasn't sure if I needed other parts as well.

How's the Diesel do with the 37's? Feel like you need a regear?

We had an adjustable track bar installed with her's but the tech said it wasn't really necessary so i passed on mine and all is well. I also got the GDE tune and it removes the torque limiting in the first 5 gears and by my fuzzy math, I estimate that I am putting 410-420 ft lbs at the wheel. If I launch it at 3k rpm in 4wd, I can be at 60 in less then 6 sec. IMO you regear if you don't have enough torque. Last time at the off road park, just chugged around and barely hit the throttle.

 

[NewbJLUOwner]

Just passed 9,000 miles on my 2022 JLURD
Absolutely love this engine & everything about my Jeep
Serviced the following so far
Oil change -7500
Fuel Filter-replaced 7500
Air Intake filter-replaced 7500 with K & N
Just put 35' on NO lift
Still getting around 25 mpg
Zero Issues
I'm trying not to worry about things I can't control
So far so awesome

 

[Terpsmandan]

So maintaining speed on the freeway with any load is an issue. I personally don’t feel that diesel meets it’s stated use cases when people (like me) are having temp issues without even towing.

How much are you towing?

 

[sciotola88]

You wont regret the diesel. I love mine. 37 inch Ko2s and i still get 25 mpg if I'm easy on her. I do wish it had 4.10 gears for just a little bit more torque but i dont want it bad enough to regear.

 

[AdvEddie]

How much are you towing?

as I stated, having temp issues WITHOUT towing. That being said Ido occasionally tow a small offroad trailer that’s about 12-1300lbs loaded.

 

[grimmjeeper]

as I stated, having temp issues WITHOUT towing. That being said Ido occasionally tow a small offroad trailer that’s about 12-1300lbs loaded.

What do you have in front of your grill?

 

[Deleted member 59498]

as I stated, having temp issues WITHOUT towing. That being said Ido occasionally tow a small offroad trailer that’s about 12-1300lbs loaded.

What temps are you reaching and is it limping on you?

 

[No IFS]

Discontinued Peugeot engine. No problem should be easy to get parts forever. I wouldn’t worry about it. Pay the extra money upfront , Plus the extra fuel costs and then they’ll deduct twice as much when you go to trade it in.

 

[Deleted member 59498]

Don't mind IFS he has been hoping for an all electric IFS Wrangler to replace his under powered one.

 

[HazmatJL]

my 3.0 Diesel was at the dealer for 3 months for a failed diesel fuel system, and failed DEF system, the actual repair took under a week, but waiting for the parts was the part that took almost 3 months.

 

[Antonio]

i have to say for the longest time I have always wanted to get a diesel jeep, my first was a VW oil burner and loved it! Some people love the 392 cause of the V8, me I just enjoy the performance and torque, sound of the 3.0 and as far as issues I would say all engines have a probability of developing issues down the road, I had a 3.6 from 2016 and that was in the shop a few times, nothing major but it can happen to any engine. I think the 3.0 just gets a bad rep in general simply cause it’s a diesel and everyone wants to act like it’s the Antichrist i have nothing but positive things to say, and everyone I know who owns one is just as happy! I’m sure there might be some hiccups here and there but diesel in general if maintained well will be fine for a long time!

 

[Astro Jeep]

The biggest issue after 20,600ish miles is that it is just too damn awesome! Have you ever tried to look at the Ark of the Covenant? It is like that when you open the hood. Blinding light pours out to the point that you can barely see. Meanwhile, the angelic sound of aaaaahhhhhhhhhhhhh is emanating louder than that gangsta wannabe's base speaker at the traffic light!

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