got a 1993 Ford FlareSide 5.0 with a 5 speed and 3rd gear is starting to pop out and grinds going in, not all the time just sometimes can someone tell me why. Thanx!

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I HAVE THE SAME PROBLEM ON MY 1996 F150 WITH THE MAZDA 5SPD. I BELIEVE THAT THE SYNCO FOR 3RD GEAR HAS GIVEN UP THE GHOST. IF I LEAN ON 4TH BEFORE I ENGAGE 3RD I WONT GRIND IT. IF YOU LOOK IN THE TRANSMISSION SECTION OF THESE FORUMS I BELIEVE THAT YOU WILL SEE THAT THIS IS A COMMON PROBLEM WITH THE MAZDA TRANS. I AM SAVING UP FOR A ZF.