We'll start with the stuff that is easy to check on the outside of the
trans. If these don't fix it, it'll have to come out :(
Follow the procedure in the shop manual to make sure the linkage is set
correctly.
Essentially, all levers on trans in neutral.
Shifter in neutral.
Stick a 1/4 inch diameter rod thru the hole in the shifter and all the
levers.
Loosen nuts on shift linkage to allow the rod to be inserted if necessary.
Look for worn out or loose components in the shift linkage.
Look especially where the shift lever on the trans bolts to the shaft
sticking out of the trans.
If that nut gets loose the lever can get "wallered out". They must be
replaced then.
www.toploaderheaven.com has some good diagnostic pages and pictures.
He can also sell you levers and a shifter rebuild kit.
Make sure there is no lost motion in the linkage.
Hopefully you will find something obviously wrong in this area and your
problems will be gone.
If not, it is probably time for a trans rebuild.
Erich
rebuilt my trans at Xmas and my shifter last month
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