Hard 1-2 shift w/auto
04-05-2012, 03:53 PM
#1
JK Enthusiast
Thread Starter
Join Date: Feb 2009
Location: Pensacola, FL
Posts: 135
Likes: 0
Received 0 Likes
on
0 Posts
Hard 1-2 shift w/auto
I have a '10 auto w/3.73 limited slip with 11,350 miles. Under light to medium acceleration up a hill or even flat road the transmission seems like it shifts a little hard. On hard acceleration it shifts smoother. It does it hot or cold. Whats weird is sometimes is shifts smooth on a flat road or not as hard up a hill. Fluid is red and full. I took it to the dealer today and they reflashed the trans control module. Trans still shifts the same. Anyone have similar shifts? Im thinking it's just the crappy auto.
04-05-2012, 04:01 PM
#2
JK Enthusiast
Join Date: Dec 2010
Location: Beaver County, PA
Posts: 215
Likes: 0
Received 0 Likes
on
0 Posts
It's hard to tell. I have a '10 auto and it was hit or miss on the shifting. I have since started using a Superchips Flashpaq and tinkered here and there with some improvements. But at the end of the day it's still a crappy auto but I've just gotten used to it.
04-05-2012, 07:39 PM
#3
Noticed that too on '10 Unlimited Rubicon with 49k miles, but it seems like it only does it when it's cold. Recently upgraded to 35s and it's a little more noticeable, doesn't matter if it's light or hard acceleration.
04-26-2012, 08:23 PM
#5
JK Newbie
Join Date: Jul 2010
Location: Corvallis, OR
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
Re:hard to shift w/auto
Hard shifts are normally a good thing in automatic transmissions so long as it isnt irregular in the hesitation. Id much rather it shift hard than "smooth" as that can mean theres slippage. Just my 2 cents