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#4635277 - 01/15/18 12:05 AM 2016 JK transmission issue?
Konstantine Offline


Registered: 01/12/18
Posts: 44
Loc: Rockies
My 2016 Jeep Sahara has a hard time shifting from second to third gear. I always have to briefly let off the gas for it to shift into third gear. I live up around 10,000 ft so that may be an issue. although It doesn't seem to bother my Escalade. The transmission is at the proper level and it only has 20k on it. She also has a 4" lift and 35's on her.

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#4635279 - 01/15/18 12:10 AM Re: 2016 JK transmission issue? [Re: Konstantine]
2strokeNorthstar Offline


Registered: 07/19/17
Posts: 274
Loc: PR CA, USA
Sounds like a programming issue to me. Has the speedo been re-calibrated for 35"s? They are usually a little less than 34" when mounted. With 35"s on my truck and no programmer the trans would hang in 4th and delay the shift back into overdrive after a grade for a bit. With the computer getting what it thinks is the correct speed inputs it's fine.


Edited by 2strokeNorthstar (01/15/18 12:11 AM)

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#4635281 - 01/15/18 12:15 AM Re: 2016 JK transmission issue? [Re: Konstantine]
Konstantine Offline


Registered: 01/12/18
Posts: 44
Loc: Rockies
The speedometer has been re-calibrated. I notice it more on the inclines.

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#4635284 - 01/15/18 12:24 AM Re: 2016 JK transmission issue? [Re: Konstantine]
HoosierJeeper Offline


Registered: 11/23/16
Posts: 1276
Loc: WI
You need to regear it.
_________________________
15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)

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#4635285 - 01/15/18 12:31 AM Re: 2016 JK transmission issue? [Re: HoosierJeeper]
Konstantine Offline


Registered: 01/12/18
Posts: 44
Loc: Rockies
I would have to say that you're balls on accurate there.

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#4635288 - 01/15/18 12:39 AM Re: 2016 JK transmission issue? [Re: Konstantine]
HoosierJeeper Offline


Registered: 11/23/16
Posts: 1276
Loc: WI
What's stock on those? 3:21? That's gotta be a dog up there spinning those tires. I noticed a decline with my Liberty going up 2" in tires, have 3:73s, 4:10s would be optimum. I'd think for that you'd want 4:56 or 5:38. Is your fuel economy pretty bad too?

Likely not the answer you wanted to hear, but that trans will be dead before 100k without a regear. It'll feel like a new Jeep!
_________________________
15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)

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#4635302 - 01/15/18 01:09 AM Re: 2016 JK transmission issue? [Re: Konstantine]
DdDd Offline


Registered: 06/08/17
Posts: 189
Loc: NY
The 5spd likes to hang onto gears if you drive it sporty I've noticed. Nothing wrong with that, its better than the fuel saving "get into high and don't downshift ever" setup most trannys have

With the larger wheels, you need to reprogram or regear. It's trying to compensate and keep the engine in the power band.

Also mine was a little low from the factory. Try several readings on the dipstick. It's not consistent I've noticed. Low fluid shifts late and sluggish.

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#4635363 - 01/15/18 05:10 AM Re: 2016 JK transmission issue? [Re: Konstantine]
DoubleWasp Offline


Registered: 05/21/12
Posts: 5236
Loc: Fort Lauderdale, FL
Big tires and tall gears are tranny killers.
_________________________
07 Lincoln Navigator M1 0w-40/FU
68 Charger R/T / Supercharged 440 VR1/DBL7349
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#4635385 - 01/15/18 06:17 AM Re: 2016 JK transmission issue? [Re: HoosierJeeper]
demarpaint Offline


Registered: 07/03/05
Posts: 29780
Loc: NY
Originally Posted By: HoosierJeeper
What's stock on those? 3:21? That's gotta be a dog up there spinning those tires. I noticed a decline with my Liberty going up 2" in tires, have 3:73s, 4:10s would be optimum. I'd think for that you'd want 4:56 or 5:38. Is your fuel economy pretty bad too?

Likely not the answer you wanted to hear, but that trans will be dead before 100k without a regear. It'll feel like a new Jeep!


Exactly.
_________________________
God Bless Our Troops


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#4635399 - 01/15/18 06:41 AM Re: 2016 JK transmission issue? [Re: demarpaint]
Konstantine Offline


Registered: 01/12/18
Posts: 44
Loc: Rockies
Thanks for the advice, I will be re-gearing. Thats no big problem as I wanted to change out both axles anyhow.

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#4635426 - 01/15/18 07:35 AM Re: 2016 JK transmission issue? [Re: Konstantine]
Miller88 Offline


Registered: 04/09/08
Posts: 12704
Loc: Onondaga County
Go as low as you can. With your elevation, I would certainly want it. There's no reason that that engine can't sing along at 3000 or 3500 all day if you take it on a road trip.
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18 Forester 2.5I 6M
00 Jeep Cherokee
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#4635549 - 01/15/18 09:27 AM Re: 2016 JK transmission issue? [Re: Konstantine]
Konstantine Offline


Registered: 01/12/18
Posts: 44
Loc: Rockies
It has the stock 3.21 gears.

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#4635562 - 01/15/18 09:35 AM Re: 2016 JK transmission issue? [Re: Konstantine]
zuluplus30 Offline


Registered: 11/23/13
Posts: 358
Loc: Fly-over country
I have 3.73s on 35s and even that is borderline iffy. No way I'd be running 35s/3.21s. You need to regear period. 4.56/35s is a perfect combo for the 3.6 auto. Even 4.10s is a good setup but the 3.6 really comes alive north of 2500. I routinely drive down the highway in manual 4th instead of 5th when it's windy so it won't constantly hunt.

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