What I hate about my jlu

[Stormin’ Moorman]

Sometimes being wrong feels bad, I get it. You don’t make it better by continuing to push false info to people.

Assuming I’m wrong...that’s temporary. But you’ll always be an asshole and that’s permanent.

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[xeon]

Hello,

So I own a jlu sport with 2” mopar lift with 33” tiers and pro comp wheels 17x9

What I really hate is when im driving 140 the is stays on the 7th... so i bought the car to use the 8 gears not only 7

any ideas how can i fix this.. I want to keep my lift cuz i love it... would it be fixed if I added a bit more power to the car? Such as an intake + Muffler?

Depending on my drive, I can get easily stuck in 7th gear with a slight incline, the right speed, etc. Its the computers choice based on load. However, I hated this problem too....so two things fixed it for me. I am running a JLUR with 2" lift and 35 so wanted to get the best fuel milage possible and needed 8th,.

1. Switched gas to Premium - sounds stupid but it works. Better fuel milage too.
2. Switch to manual mode and upshift into 8th. Works like a charm....if you start to feel too much load...down shift and continue.

Easy no hassle solution

 

[SteadyC]

Stop spreading lies. Feel free to look into it if you like, but no, reprogramming does not affect shift points.

I disagree with you, although I suspect you already know better than anyone else, and aren’t open for others opinions. I’ve read lots of people in these forums, when they upgraded tire size, they reprogrammed the new tire size, and this fixed shift points. When you reprogram, you are not just fixing the speedometer, you are telling the computer what tire sizes are on, which is used holistically in the computer, for more than just accurate speedometer. Such as:
https://www.jlwranglerforums.com/forum/threads/automatic-seeing-7th-and-8th-now.36907/#post-827759

 

[Sjpunx]

Hello,

So I own a jlu sport with 2” mopar lift with 33” tiers and pro comp wheels 17x9

What I really hate is when im driving 140 the is stays on the 7th... so i bought the car to use the 8 gears not only 7

any ideas how can i fix this.. I want to keep my lift cuz i love it... would it be fixed if I added a bit more power to the car? Such as an intake + Muffler?

I'm running a 2-inch lift and 33's on my JL and had to re-gear to 4.11. I even flashed for tire size and made no difference. Now it hits 8th no problems and my exhaust drone is gone as well.

 

[HajPaj]

Well what I hate about my Jeep is the fact that I have to touch the front door first before the back door opens. With my last bmw, as long as my key was on me, I could touch that back door and it would open. It’s super annoying when you have groceries or things you just want to put in the back before getting into the drivers seat.

 

[Sgt Beavis]

The only thing I hate is that I didn't buy a Rubicon. I had no idea I'd love off roading in the mountains.

I'm going to buy a Gladiator. I will NOT be making the same mistake.

 

[KrazyKirk]

Hello,

So I own a jlu sport with 2” mopar lift with 33” tiers and pro comp wheels 17x9

What I really hate is when im driving 140 the is stays on the 7th... so i bought the car to use the 8 gears not only 7

any ideas how can i fix this.. I want to keep my lift cuz i love it... would it be fixed if I added a bit more power to the car? Such as an intake + Muffler?

I have a 2018 JLU Sahara Unlimited (My first Wrangler) with a 2" BDS lift and 17"x35"x12.5"" General Grabber 3 tires. I could not find a dealer in the State of Delaware to reset the computer to the 35's. It had a hard time finding 8th gear till when I was on vacation in the outer banks, the KDH dealer did the calibration. On long trips like to the Outer Banks, Myrtle Beach etc. it averages about 21.8 MPG. It used to be before the lift and 35's about 23.5 MPG. With the computer reset to the tires I catch 8th gear traveling the interstate, which I do every day 20 miles each way to work (40 Total). Now with that said, any grades grades on the interstate it will drop to 7th gear till it catches up. Driving around town I average 17.9 to 19.1 MPG but 8th gear is rarely found. Overall I have no issues, I just love my Jeep. I hope this helps.

 

[Jeeper2]

Contact the shop that did the mods and ask them. If they gave you a detailed receipt/invoice you can check that too. Visually you can't check. But if your Jeep isn't going into 8th with the larger tires, they didn't re-gear the diffs.

also there is an app that you can download on your phone and it will tell you how fast your going and you can compare that with your speedometer to see how close it is. The app is Speedomoeter

 

[mwilk012]

I disagree with you, although I suspect you already know better than anyone else, and aren’t open for others opinions. I’ve read lots of people in these forums, when they upgraded tire size, they reprogrammed the new tire size, and this fixed shift points. When you reprogram, you are not just fixing the speedometer, you are telling the computer what tire sizes are on, which is used holistically in the computer, for more than just accurate speedometer. Such as:
https://www.jlwranglerforums.com/forum/threads/automatic-seeing-7th-and-8th-now.36907/#post-827759

It doesn’t matter what anyone thinks is happening when they reprogram their speedometer. It has no control functions. All they’re seeing is confirmation bias.

 

[Udi]

I have not seen any supporting evidence for whether reprogramming does or does not affect shifting points. Anybody has any solid proof or is it all just opinions? If you have a knowledge of the Jeep algorithm, share it. If you have any other Jeep documentation that says it, show it. Otherwise, nobody here really knows one way or another.

BTW - I agree with the guy that said - just buy a Rubicon.

 

[smithrd65]

Sounds like the dislike of the vehicle is caused by SELF INFLICTION. It's not the vehicles fault. The OWNERS FAULT. So posting what you hate is actually funny.

My Rubicon doesn't have that issue.

 

[Jeep’n Jay]

If you want to see 8th, you’ll need to re-gear.

This. I re-geared to 4.56 and use all 8 gears with ease.

 

[Jlmoe]

I like how some members are replying to the thread title by saying what they hate about their own Jeeps

Damn :D

 

[higbyz]

Step 1. Reprogram so your Jeep knows it’s running 33” tires. That will change your shift points and may fix or mediate your problem. You can buy a JL TAZER online and they’re great for a lot of tweaks including changing your tire size and can be bought for about $350.

Step 2. If the reprogram doesn’t work you may need to look into different gears, which can be quite a bit more expensive.

A lift can negatively affect the aerodynamics of the Jeep by getting more air under the vehicle which creates more drag and thereby causing higher RPMs and lower fuel economy. But in my experience gearing is a much larger issue and there’s nothing you can do about the aerodynamics unless you lower the Jeep again.

Jeep aerodynamics, now that is an oxymoron

 

[higbyz]

Here is how I do....

Feel free to experiment and find what works for you though.

Always nice to do it with a smile !

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