[sp_18902]

I am working on my 2001 cadillac deville. I had a tcc problem. I replaced the tcc and the harness. everything worked out good. I had a leak in the side pan so i tore it back down and replaced the gasket. Then added 5 quarts of fluid and started the car. I noticed it pushed some fluid out the filler hole and then it would not go into gear, nor would it take fluid. I found the pump shaft twisted and broken. I have gotten another one but would like to know what caused this. If anyone could advise me on this i would appreciate it. I don't have alot of experience with automatic trannys. The transmission is a 4t80e.

[Crosley]

Originally Posted by sp_18902

I am working on my 2001 cadillac deville. I had a tcc problem. I replaced the tcc and the harness. everything worked out good. I had a leak in the side pan so i tore it back down and replaced the gasket. Then added 5 quarts of fluid and started the car. I noticed it pushed some fluid out the filler hole and then it would not go into gear, nor would it take fluid. I found the pump shaft twisted and broken. I have gotten another one but would like to know what caused this. If anyone could advise me on this i would appreciate it. I don't have alot of experience with automatic trannys. The transmission is a 4t80e.

sp_18902 , Welcome to Hotrodders.com. I edited the thread title to provide vehicle information in the subject.

Since you changed the torque converter and then developed a damaged input driving shaft to the pump, I would speculate that you did not have the torque converter properly installed when the trans was bolted back to the engine.

The pump may be damaged too.

[tnsmith10]

Originally Posted by sp_18902

I am working on my 2001 cadillac deville. I had a tcc problem. I replaced the tcc and the harness. everything worked out good. I had a leak in the side pan so i tore it back down and replaced the gasket. Then added 5 quarts of fluid and started the car. I noticed it pushed some fluid out the filler hole and then it would not go into gear, nor would it take fluid. I found the pump shaft twisted and broken. I have gotten another one but would like to know what caused this. If anyone could advise me on this i would appreciate it. I don't have alot of experience with automatic trannys. The transmission is a 4t80e.

you put the studded bolt for the trans mount bracket in backwards. short end goes into the casting, not the long side. i did this once...