Only reverse works. No foward gears.
No forward movement in OD or D, but L2, L1 and R work: Forward sprag is broken. R&R. Try not to run or drive the car or further damage could result.
Do you have manual 1st? If so, can you shift through the gears...i.e.
manual 1st to manual 2nd then 'D' then 'OD'??? Only 1st and 2nd gears
use the forward sprag unless the LO/Rev clutch is engaged...i.e. 1st
and 2nd if in "drive". If you can shift threw the gears manually then,
yes, your forward sprag broke.
If no manual 1st then your sprag is not what broke. Sounds like you blew up the rear planet. If you pull the pan and find chunks of iron and steel, then that is probably what happened.
If you have reverse then it is not the pump. If the pump was bad you would have no line pressure
and it would slip in rev. or no rev. Not the beef sun shell either
because you have rev., a broken sun shell would cause no 2nd, 4th and
rev. gears. Either way the trans needs to come out and torn down and it will be easily found what went. Good luck and thank you for using Fixya.
Mar 06, 2010 |
1991 GMC C1500