Ok, I'm looking for any potential instances of this same issue out there. My transmission in my '97 80 (A343F) went out while going down the road last year. I was driving down the road and coasting down a hill. I got back into the throttle at bottom of hill and RPM's shot up. No noise, no grinding, no nothing. Just no Drive or Reverse.
Got the truck towed to a friend's shop and discovered by disconnecting cooler lines that there was no fluid moving through the transmission with engine running. We pulled the transmission and did not notice anything obvious. Luckily, he had a donor truck with a good low mileage trans, so we installed it. Truck ran great up until a few weeks ago when the exact same thing happened going down the road. No noise, no bang, just no drive, and no fluid moving. The old transmission was pulled apart and it was discovered that the pump drive gear was badly chewed up.
The working theory following that discovery was that the Torque Converter was not fully seating into the pump and overtime it just completely lost engagement and thus no fluid was moving and no drive. My thought was that this could be due to missing flywheel spacers or a flywheel issue. I've just finished pulling the second transmission and it appears that the two flywheel spacers are indeed present so I'm at a loss as to what the issue could be. The flywheel does appear to be bowed out a little bit in the center compared to another one off the shelf. I have a pump and drive gear in route but I'd really like to know what caused this to happen a second time.
Can anyone confirm that the two spacers below are indeed the one's mentioned in the FSM?
Got the truck towed to a friend's shop and discovered by disconnecting cooler lines that there was no fluid moving through the transmission with engine running. We pulled the transmission and did not notice anything obvious. Luckily, he had a donor truck with a good low mileage trans, so we installed it. Truck ran great up until a few weeks ago when the exact same thing happened going down the road. No noise, no bang, just no drive, and no fluid moving. The old transmission was pulled apart and it was discovered that the pump drive gear was badly chewed up.
The working theory following that discovery was that the Torque Converter was not fully seating into the pump and overtime it just completely lost engagement and thus no fluid was moving and no drive. My thought was that this could be due to missing flywheel spacers or a flywheel issue. I've just finished pulling the second transmission and it appears that the two flywheel spacers are indeed present so I'm at a loss as to what the issue could be. The flywheel does appear to be bowed out a little bit in the center compared to another one off the shelf. I have a pump and drive gear in route but I'd really like to know what caused this to happen a second time.
Can anyone confirm that the two spacers below are indeed the one's mentioned in the FSM?
