1st gear pop out every day.. ?!
JK Newbie
Joined: Jun 2009
Posts: 74
Likes: 0
From: North Idaho
The dealer said there is no recall for my 2009 JK. I cannot find one on the Jeep site. But the dealer said they would check it out. The tranny mechanic was in the service office and he said there was a problem with the 07 and 08s but they got it fixed in the 09s. We'll see what happens since I left it there. At least they gave me a free rental car.
Last edited by redwood66; Mar 8, 2010 at 04:19 PM.
JK Newbie
Joined: Jun 2009
Posts: 74
Likes: 0
From: North Idaho
TSB 21-001-10 affects all Wrangler JK with manual transmissions 2007-2010... This is NOT a recall, just a TSB defining :
"The transmission pops out of first gear while accelerating. The condition, may occur intermittently and may be difficult to diagnose...."
Be sure you have first fully engaged.. The 1/2 synchronizer has a triple cone synchro and might give you a hard shift into first during cold conditions. These cones have to line up..If a real pop out exists, you can re-simulate this by "helping" the pop out by exerting a slight pull force on the shift lever (simulating road bounces) whilst accelerating..
Because of torque load the first synchro needs to have good back taper on the coupling sleeve spline and on the gear dog teeth to assure a positive lock whilst engaged.. I am convinced this is where the NSG370 OEM screwed up.. They are indeed replacing the 1/2 synchronizer with a field synchronizer p/n 68089512AA..
FYI
"The transmission pops out of first gear while accelerating. The condition, may occur intermittently and may be difficult to diagnose...."
Be sure you have first fully engaged.. The 1/2 synchronizer has a triple cone synchro and might give you a hard shift into first during cold conditions. These cones have to line up..If a real pop out exists, you can re-simulate this by "helping" the pop out by exerting a slight pull force on the shift lever (simulating road bounces) whilst accelerating..
Because of torque load the first synchro needs to have good back taper on the coupling sleeve spline and on the gear dog teeth to assure a positive lock whilst engaged.. I am convinced this is where the NSG370 OEM screwed up.. They are indeed replacing the 1/2 synchronizer with a field synchronizer p/n 68089512AA..
FYI
JK Enthusiast
Joined: Jul 2008
Posts: 162
Likes: 0
From: Yorktown VA
I had an 09 Wrangler that I left in Guam. Never had this issue. Bought a 10 when I returned to the mainland and it's popped out of gear 10-12 times in 750 mile. Scared the crap out of me the first time it happened.
Yeah I know.. same here.
JK Newbie
Joined: Jun 2009
Posts: 74
Likes: 0
From: North Idaho
Took a week for them to get parts but dealer did the TSB. I read the notes from the mechanic and he noted that I had a cell phone holder installed on the dash. Well that's only been there 2 weeks and shift problem has been happening for months. They did not believe me but fixed it anyway. They drove it a whole 17 miles when I took it in and said we couldn't make it go out of gear. Wow a whole 17 mile test drive?
They did the repair anyway. At least the paperwork says they did. They'd probably get in trouble for lying if they did not do the repair but said they did. Have had it back a week and no slamming out of gear yet so hopefully its fixed. Anyone having this problem needs to be firm with their dealer to get them to do it.
They did the repair anyway. At least the paperwork says they did. They'd probably get in trouble for lying if they did not do the repair but said they did. Have had it back a week and no slamming out of gear yet so hopefully its fixed. Anyone having this problem needs to be firm with their dealer to get them to do it.
Thread Starter
JK Freak
Joined: Dec 2009
Posts: 701
Likes: 0
From: Quebec, Montreal
Took a week for them to get parts but dealer did the TSB. I read the notes from the mechanic and he noted that I had a cell phone holder installed on the dash. Well that's only been there 2 weeks and shift problem has been happening for months. They did not believe me but fixed it anyway. They drove it a whole 17 miles when I took it in and said we couldn't make it go out of gear. Wow a whole 17 mile test drive?
They did the repair anyway. At least the paperwork says they did. They'd probably get in trouble for lying if they did not do the repair but said they did. Have had it back a week and no slamming out of gear yet so hopefully its fixed. Anyone having this problem needs to be firm with their dealer to get them to do it.
They did the repair anyway. At least the paperwork says they did. They'd probably get in trouble for lying if they did not do the repair but said they did. Have had it back a week and no slamming out of gear yet so hopefully its fixed. Anyone having this problem needs to be firm with their dealer to get them to do it.
Good luck to everyone with this TSB.. my tranny was swapped before the TSB fyi.
JK Enthusiast
Joined: Sep 2008
Posts: 231
Likes: 0
From: Phoenix, AZ
I had the TSB performed last week. Awesome to be able to get on it in first without worrying about it jumping out of gear.
In addition to what I saw on the TSB above, they replaced my first and second gear set according to my paperwork. I did not talk to the tech, but I assume this means mine was chipped or had excessive wear from the popping out.
Dealer said that if this was not under warranty, that repair would have been over $2,000. Get it done before being out of warranty
In addition to what I saw on the TSB above, they replaced my first and second gear set according to my paperwork. I did not talk to the tech, but I assume this means mine was chipped or had excessive wear from the popping out.
Dealer said that if this was not under warranty, that repair would have been over $2,000. Get it done before being out of warranty