07 1st gear synchro - Jeep Wrangler Forum

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Old 10-22-2012, 03:46 PM
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07 1st gear synchro

I have a 2007 jeep wrangler x with about 70k miles. Most of the time when trying to use 1st gear it pops out of gear, which leaves me using 2nd all the time. It doesn't matter if it's hot or cold outside. I've used 4 wheel drive once on the beach and had no problems in first at all. I don't know if thats relevant but I'd thought I'd give as much info as possible.

I dropped it off at the dealer for an inspection and they noticed too and asked does it pop out of 1st on you a lot. They said it was most likely the first gear synchro.

I'm waiting for them to get back to me on estimated cost of parts + labor. From anyone who experienced this problem do you have any advice. Avoid the dealer, seek a reputable mechanic elsewhere, anything would be appreciated.
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Old 10-22-2012, 03:54 PM   #2
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this is common, often referred to as Jump out of gear (JOG). do a search, most of the stuff i know of was related to a shift boot on the '11s and '12s but it's prevalent on the earlier JKs too. This shift boot can cause the trans to slip out of gear, there's even a TSB, so you'd think the dealer would know about it.
2012 Deep Cherry Red JKU Sport S - Tickastar, 6 speed, 3.73, Dual Tops
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