r154 coming out of 5th?

[lintlars]

Ok I just put in a newer r154 about 2 months ago and it ran great but I just pulled into Calgary from FT.St.John about a 7-9 hr trip (depends how you drive) and about 3 hrs into the trip it started to come out of 5th gear only when I decelerate only then its ok when its under load all the other gears are OK Im using castrol syntec (80-90) .

 

[figgie]

bad syncro

 

[88turbosup]

I had similar problem with mine after rebuild and i took it back to the shop that did the work and they said that it was a borken snap ring

 

[Fuzz420]

Mine did that in my honda.I put it back in gear and there was no more 5th.......
I had to buy a new one, best of luck....