Sticky Syncro's - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 01-06-2011, 04:37 PM   #1
Jeeper

WF Supporting Member
 
airfoil's Avatar
 
Join Date: Nov 2010
Location: Central New York
Posts: 110
Sticky Syncro's

I've got a 2005 TJ I picked up a few weeks ago. Only 60k miles on it. It seems to have a little crunch shifting from 1st to 2nd sometimes. Crunch, not a grind. Does this seem normal or maybe I've got bigger problems?

airfoil is offline   Quote Quick Reply
Old 01-06-2011, 04:43 PM   #2
Jeeper
 
Join Date: Jan 2011
Posts: 24
depends on what you mean by crunch?

I think there are quite a few of us out here that have issues going from 1st to 2nd when cold. Seems there could be several factors, lift, trans oil, linkage etc.

I would probably put some sort of synthetic trans oil in there and see how she does after that.

I personally had this issue with a 2000 TJ and decided to pull and completely rebuild the trans replacing syncros as well and filled with redline synthetic fluid. Still doesn't like shifting from 1st to 2nd. I think its just a Jeep thing.

draimondi is offline   Quote Quick Reply
Old 01-06-2011, 04:51 PM   #3
Jeeper

WF Supporting Member
 
airfoil's Avatar
 
Join Date: Nov 2010
Location: Central New York
Posts: 110
Sticky Syncros

I just have a little crunch maybe every third time I shift. I let the revs fall and just ease it into 2nd. 2 out of 3 times it's smooth. I just had the trans drained and refilled with new oil thats supposed to free up sticky syncros. I've put about 120 miles on since then. Can't say that it feels much different. At this point, I hope it is just a jeep thing.
airfoil is offline   Quote Quick Reply
Old 01-06-2011, 05:19 PM   #4
Newb
 
Join Date: Dec 2010
Location: Walla Walla, Wa.
Posts: 14
I also have the same on my 04 TJ 50,000 miles. Not really a crunch but hard from 1st to 2nd. Once warm it pretty much goes away.
Walla Walla WADE is offline   Quote Quick Reply
Old 01-06-2011, 05:24 PM   #5
Jeeper
 
Beer30's Avatar
 
Join Date: Apr 2010
Location: SW Ohio
Posts: 252
There was just a thread about this the other day, too. Mine does the same thing cold, no matter what the fluid.

After you shift from first and into neutral on your way to second, bring the stick right a bit, then back left, then down into second and it'll go nice and smoooooth.
Beer30 is offline   Quote Quick Reply
Old 01-06-2011, 05:41 PM   #6
Jeeper

WF Supporting Member
 
TexasT's Avatar
 
Join Date: Oct 2009
Location: Texas Hill Country
Posts: 754
My ax15 shifted good but the nv3550 has the problem you describe and it's brand new.
__________________
1999 Sahara
D30 w/powertrax no-slip,D35 w/ultimate 35 upgrade OX locker,4.56 gears,Air on Board, Mile Marker Winch
Warn Lockout Hubs

FIVE GRANDCHILDREN!!!!
TexasT is offline   Quote Quick Reply
Old 01-06-2011, 06:03 PM   #7
Jeeper

WF Supporting Member
 
airfoil's Avatar
 
Join Date: Nov 2010
Location: Central New York
Posts: 110
Sticky Syncros

One last thing about mine. It doesn't improve when it warms up.
airfoil is offline   Quote Quick Reply
Old 01-06-2011, 06:25 PM   #8
Jeeper
 
That99SaharaGuy's Avatar
 
Join Date: Dec 2010
Location: Northern AL
Posts: 614
mine always grinds whenever u throw it in reverse with the clutch pressed all the way to the floor. I shift it into 5th or somethin and it usually goes smoother... don't know why I posted this haha
__________________
...And then sometimes you just gotta break out the grinder and let the sparks fly.
That99SaharaGuy is offline   Quote Quick Reply
Old 01-06-2011, 07:28 PM   #9
Jeeper
 
Join Date: Dec 2010
Posts: 23
I just bought my '05 with 33k on her from Carmax about a month back, I brought her back yesterday because it would pop out of first when cold, they drained an refilled with synthetic now she is a bit resistant to go into gear right at startup (been 15-20 degrees here) but shifts fine when warmed up and no longer pops out of first.
Marino13 is offline   Quote Quick Reply
Old 01-06-2011, 07:38 PM   #10
Jeeper
 
pokey's Avatar
 
Join Date: Feb 2010
Location: backroads of the Mojave
Posts: 1,106
^ '05 they started using the NSG370 6 speed, and they do have a problem with popping out of gear. Check the JK section, the transmission is used in them and there's quite a bit of discussion about it. There may be a recall, check with a dealer.
__________________
__________________________________________
. . . . picking the lines with my twenty-nines . . . .
__________________________________________

'99 sport 4.0 5 speed, top-of-the-line floormats
pokey is offline   Quote Quick Reply
Old 01-06-2011, 08:00 PM   #11
Jeeper
 
Atthehop's Avatar
 
Join Date: Jul 2008
Location: NW, NJ
Posts: 3,895
I have been driving for over 40 years and have driven everything up to big rigs. After many years in a wrangler you need to shift slowly to prevent grinding. These are not sport cars that like fast shifting. They are more like trucks, beefer than sports cars, and need tender loving care. Have almost 100K on my TJ and whenever I shift a little too quickly it grinds a little. It's just the way they are built. Think double clutch when shifting but you do not need to double clutch.
__________________
Retired my 94 YJ 4cyl 5spd @ 200K
Now in a 04 TJ 4cyl 5spd CV @120K+
Both as a commuter vehicle in NW, NJ
April 2012.downsized and now a 99er.
Atthehop is offline   Quote Quick Reply
Old 01-12-2011, 12:32 PM   #12
Jeeper
 
SilverTJMike's Avatar
 
Join Date: Jan 2011
Location: Boulder,CO
Posts: 409
I have 2, one at 67,000 miles and one at 93000 we just picked up, both are crunchy going into third.

I changed the fluid in the 67k mile one to synchromax last week and it hasn't really improved. They both didn't have this problem before, not sure why it start to show up now.
SilverTJMike is offline   Quote Quick Reply
Old 01-12-2011, 12:57 PM   #13
Jeeper
 
Beachcomber's Avatar
 
Join Date: Jan 2010
Location: NJ during the week Delaware on most weekends
Posts: 344
I have a 01 Sport and recently I can feel the gears meshing when I shift from 1st to 2nd not all ways but once in a while. No grinding but I can feel it in the shifter.
Beachcomber is offline   Quote Quick Reply
Old 01-12-2011, 01:39 PM   #14
Member
 
Join Date: Sep 2010
Location: Riverton, Wyoming
Posts: 139
My '05 had that same crunch until I tried M1 10w30 synthetic engine oil in both transmission and TC based in a recommendation from Rockland Standard Gear. Their techs are top-drawer and an authority that I greatly respect for excellent advice on these matters.

Problem solved.

Prior to that I tried a half-dozen expensive aftermarket MT lubricants that never really got rid of the problem. Love the way it shifts now; in fact, it's so smooth and quiet that it is borderline-fun again, even when it's below zero in the morning around here.

JD Adams is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
We need a sticky, this being a "Tech Fourm" Sticks TJ Tech Forum 2 08-22-2010 05:18 PM
Bed liner review sticky? Jp90Talon General Jeep Discussion 4 09-17-2009 01:31 PM
Gritty, Sticky Clutch... WTH? Help.? 05GT-O.C.D. TJ Tech Forum 7 08-29-2009 04:38 PM
Full SOA sticky? blueroo YJ Tech Forum 17 08-07-2007 06:03 PM



Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 11:02 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC