5 speed transmission troubles, pops out of 5th gear under load. Geo Metro.
2000 Metro, 5 speed, 1.0L 3 cylinder, with 98K miles. If you hold hand on shift, it will stay in gear. No problem with the other gears. The motor mounts on firewall and transmission seemed loose, so installed new ones, but still have same problem.
Book says to adjust leakage first. Actually, there is only a plate position that can be adjusted. The bolts are really rusted underneath, and dealer doesn't show replacements. The parts guy gave me a picture of the parts and list, and the picture and what I have don't exactly look the same.
I did so more testing on this car. Noticed at low engine speed 30MPH, and under load, shifter stays in 5th gear, but above 45 and up to 65 it pops out, UNLESS you hold your fingers on the shifter. It doesn't take much pressure to hold it in gear. I figured it must be a bearing worn out and high speed spinning of all that mass is causing the problem.
Now, since it certainly may be a synchronizer, is it a major job? I have replaced syn's in 3 speed Chevy transmissions(showing my age), but imagine this to be more difficult.
So, anyone with this problem? I was thinking maybe a synchronizer bad, or teeth on gear worn. Found a guy locally who will change gear out for $450, plus parts cost. I've worked on manual transmissions in past, and wondering about taking it on myself. Am on a budget, and already spent too much for this car.
Finally, where do you think I could find a tech manual for this? I have tried to find one, but no luck.
Help in western Kentucky