https://en.wikipedia.org/wiki/Chrysler_Pentastar_engine#Pentastar_upgrade

 

Thanks but that doesn’t tell me the differences, if any, between those engines for the jk as opposed to the jl’s.

 

The biggest one I've heard of, maybe the only one, is the stop/start thing with the engine... where it stops the engine when you stop, and automatically restarts when you put your foot on the gas.

I wouldn't like it, but you can turn that feature off with a button on the dash. The problem is that you can't permanently turn it off on a menu somewhere. You have to push the disable button every time you start it up... assuming you don't like it, that is.

I don't own a JL. That's just regurgitated from what I've read.

As far as I know, that's the only significant change. Same basic engine.

 

You can download the app OBD Jscan and enter into the jeep computer and turn on off alooottt of the options. You can even disable the start stop on top of tons of other added options. I have a OBDlink MX+ and it does great.

 

3.6L Pentastar V6 engine (2016-on)

 

Crap. According to those articles the aussies had a 3.6 in their 2010 jk’s!

My 2010 jk had that 3.8! Crap again.

Well, temper tantrum over that still doesn’t indicate any differences between the engines in the jk and jl. Of course there may not be any. I’ve just run across a couple of references to such.

I’ll just keep looking.

Very good article btw.

 

The engine oil capacity is 1 qt less in the JL 3.6. The coolant capacity is also somewhat less. As for the rest, I'm not sure..

 

So were the changes made to have a better product for the consumer or to help the bottom line of FCA? Given the track record of FCA.

 

Same here, had several issues with GM EGRs, Suzuki (made in Japan) was acting weird from day one throwing EGR related codes.
What I specifically don't like about JL EGR is the fact egr is cooling ex gases from 1202°F to 266°F, which means additional heat load for the cooling system.
They are now adding e-torque thing which also have a cooled battery - this will add even more coolant hoses and load on the cooling system.
IDK maybe JL have a larger radiator and a different engine temperature management but judging by their winning fans at stop lights I doubt.

 

Didn't realize it was that big of a delta. So how is the condensation being dealt with, which would have to occur with that big of a delta T? I would think possibly the NOX and condensate might produce some Nitric acid???? If so, that could be very bad.

 

1989 E30 M20 325 same instructions.
I do "Italian tune up" on all my vehicles since then.

 

I learned at a young age that an Italian tune up was putting only gasoline in a two stroke engine. I remember my friend's father asking how much oil we mixed into the gasoline. Blank stare. He said Italian tune up.

But this definition makes much more sense to me.

 

What is EGR?

 

Exhaust Gas Recirculation

 

Hopefully the Pentastar EGR cooler does not require regular cleanings like th Cummins does.

 

or failure... ug had to work on the father inlaws 2010 dodge ram 3500 cummins. his was so bad that the EGR valve cooling system was leaking coolant into the exhaust system. He was wondering why it was overheating. (3500cdn$ to replace) Rad was empty. Ended up putting straight water in the rad and called it a day. Worked fine while i was there in BC for the month LOL.

 

FCA doesn’t want to sell the 3.6 JL anymore, for 2020 the 2.0 is now the standard engine (w/ auto trans). It’s all about CAFE

 

The 3.6 is not going away, nothing wrong with GTDI engines. This is a far easier way of meeting CAFE vs putting that POS MDS system (I traded my 17 Ram Hemi for the JKU) on everything. FCA looks to be following the path that Ford took with the eco boosts.

They are working on a Turbo Gas I-6 for the Rams.

Id have no issue with a 2.0 JL next time.

 

My 14 Ram 2500 6.7 cummins is a solid engine. The truck, all 8000 pounds will run off and leave my JK. The EGR has no maintenance and the DEF has had no problems. Just finished a 2800 mile towing my 8000 pound travel trailer, no issues and added DEF twice, no big deal. Except for off road ability, my Ram kicks my JKUR's butt in every way. It's faster, quieter, smoother, with a much better interior. When not towing it has a range of almost 600 miles, maybe more. The radiator does not leak and the oil cooler will not crack.

 

The EGR will require a cleaning IF you useyour truck as a grocery getter. But it sounds like you give yours a regular workout.

If I was in the market for a truck again, Cummins would be my engine of choice.

 

All automotive computers are adaptive and will be sluggish if you drive it that way. Removing battery cables and discharging the system or stomping on the gas on the highway once in a while will solve that issue.


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If they ever put a diesel in the Wrangler, it will have DEF along with a long list of other smog devices. It's my understanding that if a diesel goes into limp mode it takes a trip to the dealer to get it out. Fun times.

 

Diesel in small aplications doesn't make sense this days, with all DPF, EGR issues, regen, higher oil temp. IDK why, when ppl talk about diesel they still imagine the good old strait six with mechanical pump no turbo and 2cyl gas engine as a starter.

 

This was my first driving experience ... ДТ54

 

Mine was an MF FE 35 - miss that tractor.

 

Do JLs still have the same JK Pentastar issues, namely oil filter housing failing before the vehicle is broken in?

 

It can happen, especially if someone goes hog wild tightening down the oil filter cap.

 

But generally speaking, the things learned along the way, and related improvements and changes thereof, all made their way into the newest 3.6s.

 

It's probably been said already but I didn't read the entire thread..

IMO the biggest improvement over the JK 3.6 in the JL 3.6 was actually the 8 speed tranny.