How does a worn crankshaft bush effect a torque converter

seal installed wrong way round
groove worn in seal surface on axle /shaft
worn bush /failing bearing for shaft not keeping shaft in the center of the seal

There is a bushing there also. If the torque converter isn't straight it will eat the seal every time. It is an internal bushing, the transmission has to be torn down/rebuild.. Also the torque converter can have a ridge where the seal sets. This is a converter replace.

Something is causing damage to the seal. Make sure you put the seal in WET or it will burn upon initial start up. Also check the snout of the torque converter for damage. If there are any knicks or if it feels rough, you will need to polish them out or replace the converter.

Where is this rattling sound coming from? If it is the transmission, I would check to see if all the gears are properly seated. I would just double check all of the machinery that you took off by removing it again and re-checking the insides of what you replaced and if all is good, replace it again and check.

If everything was replaced exactly the way it came out it shouldn't be any unusual noises. Only thing it could be if everything was done properly is the torque converter wasn't seated all the way in the front pump.

The torque converter could have a hair line fracture in it, or the seal could have been nicked while fitting it, hope this helps

Hi Craig,
I'd suggest that the oil seal which seals between the torque converter neck and the gear box casing is damaged and will need replacing. The job seems simple but in fact can result in breaking the gearbox oil pump, when the torque converter is refitted to the gear box. the neck has to align with the gears inside the gear box and the oil pump, if the torque converter is not fitted correctly the damage I've mentioned will take place when refitting box.
If you would like to proceed let me know.
Regards Johngee10

CODE PO1870 IS TRANSAXLE COMPONENT SLIPPING CONDITIONS.LOOKING AT POSSIBLE CAUSES TRANSMISSION VALVE BODY NEEDS OVERHAUL ALL SHIFT VALVES HAS SEDIMENT DAMAGE OR LEAKING SEALS.THE TORQUE CONVERTER FRONT STATOR SHAFT BUSHING IS WORN THE STATOR ROLLER CLUTCH IS NOT HOLDING.THE TORQUE CONVERTER CLUTCH VALVE STUCK.PUMP TO CASE GASKET LEAKING.THE ORIFICE CUP PLUGS ARE RESTRICTED OR DAMAGED.

In the back of the crankshaft in the center of the flywheel.

Dont waste your time and money trying to use a transmission stop leak product, they don't work on large leaks, you say the leak is excessive in this case the you must remove the transmission to access and remove the torque converter, after you have removed the torque converter carefully inspect the torque convert imput shaft for wear and also you will need to visually inspect the transmission front pump bushing for wear also, I have seen it all to often people just replace the seal thinking it was just a seal failure, well more times than not there is a reason for seal more than just the age of the seal, excessive wear on trans pump bushing and torque converter imput shaft is usaully the cause, check and repair those as good practice during this repair unless you just like to do the repair over again for free... also check the torque converter run out, sometime when they are repaired they are welded back together somewhat crooked which will cause it to spin off of a true center, this will cause immediate damage to transmission. Check also your engines crankshaft end play for looseness this can cause wobble which will transfer to transmission causing this problem as well... do the repair thouroughly and who ever does it for you have them check all that I listed and you should get a good repair which will last without issues.... please rate my help thanks...