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Seems I have a problem

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Vetteman61

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I just put a 700R4 into an '86 Chevrolet truck, 4x4. I didn't unbolt the torque converter. Drained the transfer case, etc. I didn't remove the starter. Now the truck seems to have an engine locked. It's try to crank, but not even turn over once, like it's locked up. It will just BARELY turn for a split second, then stop. Does anyone have a clue what could be causing this????

Thanks,
Brandon
 
Sounds like something is bound up somewhere. I would say pull it back out, but pull the T/C, and starter off. Make sure the T/C is seated on the tranny all the way. I am not sure how you did it without pulling it off the first time. I have always had to spin the T/C back and forth on the input to get it seated all the time. Do that then get a fresh install. You did it once it should be quick out and in the second time.
 
It does sound like you missed the pump tab on the transmission. If the torque converter doesn't engage that tab properly it can put it in a bind. Best case scenario, you pull it now and save the pump, worst case you replace the pump because you broke the tab off.
 
lectric80 said:
It does sound like you missed the pump tab on the transmission. If the torque converter doesn't engage that tab properly it can put it in a bind. Best case scenario, you pull it now and save the pump, worst case you replace the pump because you broke the tab off.
Click to expand...



Ding, ding ding! We have a winner!
 
You've locked up the convertor against the trans pump. The pump is now damaged and possibly the convertor as well.
 
4X4HIGH said:
You've locked up the convertor against the trans pump. The pump is now damaged and possibly the convertor as well.
Click to expand...
Most likely right, depending on how many times you tried to start it. Pumps are pretty easy to damage. For anyone putting in a transmission, learn from the mistakes of others, always put the torque converter on the transmission while it is still out of the vehicle.
 
And triple check to make sure it's all the way down.

It will go down, but then you have to push/spin it, and it will pop in another inch or so, that's the converter locking onto the pump. Sounds like I wasn't the only one to learn this the hard way...
 
d'oh

Well, I'm about to tear back into this thing again. Not exactly how I wanted to spend my WHOLE Christmas vacation. I'd like to dream that the pump won't be damaged, but from my luck, I'm gonna guess it probably is.
I had a friend tell me I could leave the torque converter on the engine. Oh well, as you said, learn from experience, and other people's mistakes. I'll know next time, though.


Thanks guys,
Brandon
 
won't even tell how bad i FUBAR'd one up when i done my first one at 17 yrs old.. teardown rebuild install and teardown and rebuild and install again. lesson learned for a 17yr old hot foot!!! daddy always said i would cool it when it started costing ME money
 
simple rule. the t/c is part of the tranny system. so remove it all as a unit. and dont reuse a old t/c from a burnt/blown tranny as it holds tons of junk that will fill up your new tranny in a few seconds and make it go south in a hurry.

when installing a 700r4 t/c there is 3 sections to feel for. 1-2 are super easy but 3 can be hard as the 2 dog teeth on the pump are hard to get at times.

and the pump gear/teeth are sinerated pressed metel. thay will prob be junk now and i would not trust them 1 bit.
 
Agreed. That pump should not be used after that abuse or you will be pulling it out again. Look at the bright side and be glad you didnt bust a case ear when pulling that tranny to the engine w/ bolts:D
 
The good news is that the pump can be changed/repaired with tearing the tranny apart.
 
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