Gotcha!!!!

Just got a call from my mechanic and he states I need a new trans. Mechanic says pump stopped working and that would mean I need a new trans.
Does this sound right or do I need another opinion?

I would wait for @[email protected] to reply and get his opinion. He is the resident 7.3/4r100 (your trans) expert.

[QUOTE=cletusjermal;16300025]I would wait for @[email protected] to reply and get his opinion. He is the resident 7.3/4r100 (your trans) expert.[/QUOT

Still waiting!!

Sorry man - about the only thing I know about automatics are the following:
1) My wife can't drive one to save her life and she kills them early.
2) They *always* have to be overhauled based on number 1.
3) It's never cheap.

I'd put fluid in it and see if the truck will move. If it does, that'll tell you that the mechanic is full of it.

www.cncfab.us

Since you say you were towing when this ocured, you had a sign of the classic overheated 4R100 trans/torque converter. So I would fill it up and test drive it to see if it drives and still leaks, if no leaking and it shifts fine just drive it. The trans shaft seal will have cooled and sealed up and hold fluid, if it continues to leak then the trans will need to be taken out to replace that seal and it might make sense to ck the whole trans out and rebuild. If it was caused by the over heating you have to figure out why. Cooler clogged or blocked, bad bypass valve or slipping bad trans.
You could have a blocked/malfuntioning bypass valve/tube that could be causing the over heating or it could have been the towing. I certainly wouldn't pay someone 2,3 or 4K to rebuild it if it still drives fine after filling it up.

I picked it up and drove it to another place that specializes in trans only work and it drove fine there which was a 30 minute drive. Second place is removing the trans on Monday and going through it to see if anything is damaged. He has already stated it may need a torque converter and new pump but also said they drove it and it leaked no fluid and drove fine.

My fear is just continuing to drive it until it pukes fluid all over the place again. Again I am not mechanically inclined so I am kind of going off what they tell me.

When the trans leaked and puked fluid I was simply just backing a 5x8 trailer backwards into a driveway. 2nd mechanic did state that trans is under a lot more stress when going backward. He thinks pump overheated and may have caused damage and he also thinks I guess pump gasket or some gasket in front of trans may be compromised.

Backing up the truck would create a no air flow tru the trans cooler issue and could cause a over heat if it was a long heavy push but a simple small 5"x8" into a driveway I doubt it.
Hopefully you've got a guy who knows all the little fixes and up grades that the 4R100 need to make them great. I had mine rebuilt with a upgraded torque converter and also had a TransGo "Tugger" upgrade kit installed when mine was done a great investment to do ! Along with a added large trans fluid cooler. The features it has are great and 85,000 miles later my trans is still towing strong.

Rebuild begins tomorrow. Should be back on the road friday. $4000 later with all upodates and 3 year, 100,000 mile warranty