scott12180 Posted July 9, 2011 Share Posted July 9, 2011 A 1929 Lincoln Sedan is available and I've been told that it has a tendency to pop out of third gear occasionally. What would cause that? I'm worried that it might be the sign of a big problem in the transmission. . .Thanks Link to comment Share on other sites More sharing options...
scott12180 Posted July 10, 2011 Author Share Posted July 10, 2011 And I've been advised to add that the transmission pops out of gear when the engine is holding you back, like when going down a hill or slowing you down before stepping on the brakes. Link to comment Share on other sites More sharing options...
D Yaros Posted July 11, 2011 Share Posted July 11, 2011 In my experience, the "popping out of gear," most often while under a load, is caused by a defective synchronizer. Link to comment Share on other sites More sharing options...
keiser31 Posted July 11, 2011 Share Posted July 11, 2011 In my experience, the "popping out of gear," most often while under a load, is caused by a defective synchronizer.I have experienced that a few times. Usually synchro related as stated, but I was baffled once by a missing thrust washer in a transmission. We failed to install it because we didn't know it took one. We went through about 3 or 4 synchros before discovering the reason. If the car was restored and doing that, it may be the culprit. If it is an original car, probably a synchro. Link to comment Share on other sites More sharing options...
jrbartlett Posted July 11, 2011 Share Posted July 11, 2011 But isn't a '29 Lincoln a crash box with no synchronizers? Link to comment Share on other sites More sharing options...
Coley Posted March 8, 2012 Share Posted March 8, 2012 If it has synchros or not, the teeth on the gears for the shift sleeve (or synchro) are worn. Not just the synchro. Tear down time and new parts $$$$ Link to comment Share on other sites More sharing options...
Pete K. Posted May 16, 2012 Share Posted May 16, 2012 Correct me if I'm wrong here, but isn't your problem in the shift tower? In the top cover, aren't they're detent plugs that are spring loaded and detent into the shifter rails? When they wear, the car will pop out of gear. Link to comment Share on other sites More sharing options...
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