Yea, I'm eager to get the replacement synchros in so they can get chewed right up in a couple days. That way we aren't just fixing the issue but we are fixing the cause too? Right now I feel the TSB only addresses the issue and damage but not the cause.
Any link to the actual post? Wonder which dealer performed the TSB, since it seems most are reluctant and with right so. I would like to take mine to that dealership.I’m not sure this was ever posted here but an owner in a FB group posted that they had the TSB performed and the sound went away.
They included these pictures of the 5 and 6th gear having “friction weld” burn marks on them. Oil was also visibly discolored with metal. I screen grabbed those pictures of the gears. Not my content so I can’t offer much more of an explanation. This owner reported the dealer replaced these gears as well.
Did you had the time yet?
C'mon dude... we are waiting...So I had a little spare time at the end of the day and decided to try changing my fluid. 1st off I wanted to save what I got out and measure how much. I recovered almost exactly 2.5 qt. Drained it into a clean antifreeze jug (w/top cut off), then after settling i poured it back in the quart jugs. No metal flake, no visible metal of any kind in my jug. Fluid was a little dark from heat, but otherwise perfect.
I have read posts that say if the vehicle is pointed uphill, the noise stops...causing some of us to think possibly there is a lack of lube to the rear of the case causing the noise. I'm not sure i buy that theory, but I noticed the fill hole is nearly all the way to the rear of the trans, so I figured if I filled it w/the rear end jacked up, I might be able to get a little more in it, and yes, I was able to pump 3 quarts before any trickled out. I then did my best to force feed a 4th quart, and quickly install the plug before it all leaked back out. I'm not saying this is a solution, and if it pukes fluid out of the vent, thats on me. But its something I want to try. Will post my results in a few days!
Did the noise go away? Any shifting difference? It's been daaaays. 
It's been 2 days, and so far so good...however, I'm not convinced just yet. I haven't really driven much, just home+work. I'll get it out for a longer ride this weekend. Definitely was the right temp to make the noise this AM, and it did not. Shifting seems just fine.Any link to the actual post? Wonder which dealer performed the TSB, since it seems most are reluctant and with right so. I would like to take mine to that dealership.
Did you had the time yet?
C'mon dude... we are waiting...
That's all a fine theory, but one other factor has me interested and that is the reports that the noise will go away if the vehicle is on an incline. Also the fact that the noise can be instantly silenced by putting pressure on the 6th gear blocking ring. To me this says endplay issue. Endplay would also tighten up after warmup, if it's not too severe, but some people are reporting the noise remains when warm, which could be a case of more excessive endplay. I suspect that replacing the 5/6 blocking rings tightens the endplay temporarily, but since blocking rings are a wear item, they shouldn't be used to set endplay permanently, which is why I am puzzled by the TSB, and waiting eagerly to find out if it really works. Also pure speculation on my part!
That makes a lot of sense too. Definitely an unfortunate situation overall but I'm sure nothing that is too hard to solve for Getrag and Ford. Just will take longer to implement than everyone would like.
Great video capturing the noise & different scenarios it appears in!
Actual post is in 2 Door Bronco 6G Owners group. No major updates. But this owner had a transmission replaced prior, and apparently several transmission “flushes”. Looks like the replacement gears may have been lost by FedEx? Not sure this owner even got the bronco back yet but I asked. Will update if I hear anything.Any link to the actual post? Wonder which dealer performed the TSB, since it seems most are reluctant and with right so. I would like to take mine to that dealership.
Thanks. Will be waiting on your follow-up. I guess, as usual we will all have to contribute and get this pieced in together ourselves. I honestly think we have more info on this than Ford. And if we get one of the people on here that have some experience with this type of machinery they will be able to figure out the problem and a solution.
Follow-up comes faster than expected! Apparently the owner started a new post with an update. Looks like work was completed on the 4th. No new photos but overall impression is good:
like not even the same Bronco it’s awesome.”
do you have link to that post? I'm curious of how much its been driven in 2 days?Follow-up comes faster than expected! Apparently the owner started a new post with an update. Looks like work was completed on the 4th. No new photos but overall impression is good:
“It’s great. Matter of fact it’s better than day one. It has always made a tiny noise even when they replaced the trans and the other manuals I have driven made it too….I just thought it was a little noisy by nature. It’s dead quiet now
Would love to stay updated on this one, hopefully it's resolved for good and never comes back! I'm just wary from the folks above with new transmissions who get the noise back pretty quickly, as well as folks who've done the TSB and had the noise come back.Follow-up comes faster than expected! Apparently the owner started a new post with an update. Looks like work was completed on the 4th. No new photos but overall impression is good:
“It’s great. Matter of fact it’s better than day one. It has always made a tiny noise even when they replaced the trans and the other manuals I have driven made it too….I just thought it was a little noisy by nature. It’s dead quiet now
