Help! Replaced the 4eat and don't have any ATF flow.

elninoalex · #1 03-26-2006, 12:02 PM

What are the possibilities here? This is a Leg tranny into a Leg. I move the gear selector and the car doesn't do anything. I disconnected the ATF lines from the tranny and there is no flow with the engine on. If the torque converter drives the ATF pump and we know the TC is spinning, is it possible the circlip just popped out on installation? I suppose it could be a dead pump, but are there any other possibilities? I suppose there is no way to get this to work without pulling the tranny again. Has this happened to anyone? Thanks.

Stephen

oab_au · #2 03-26-2006, 03:03 PM

Quote:

Originally Posted by elninoalex

What are the possibilities here? This is a Leg tranny into a Leg. I move the gear selector and the car doesn't do anything. I disconnected the ATF lines from the tranny and there is no flow with the engine on. If the torque converter drives the ATF pump and we know the TC is spinning, is it possible the circlip just popped out on installation? I suppose it could be a dead pump, but are there any other possibilities? I suppose there is no way to get this to work without pulling the tranny again. Has this happened to anyone? Thanks.

Stephen

I don't know arything that would stop the oil flow, other that the pump not being driven by the torque converter. Did the converter locate into the pump OK when you fitted the box?

Harvey.

SVXRide · #3 03-26-2006, 03:23 PM

I'm with Harvey...no pump, no flow...
-Bill

elninoalex · #4 03-26-2006, 03:51 PM

Quote:

Originally Posted by oab_au

I don't know arything that would stop the oil flow, other that the pump not being driven by the torque converter. Did the converter locate into the pump OK when you fitted the box?

Harvey.

The TC seated properly. I actually don't know if the circlip was properly attached to the pump shaft or not. I bought it and installed it w/o checking. Would it not pump if the circlip was buggered up? I also forgot to fill the TC w/ATF before I installed it.

Budfreak · #5 03-26-2006, 04:22 PM

Quote:

Originally Posted by elninoalex

The TC seated properly. I actually don't know if the circlip was properly attached to the pump shaft or not. I bought it and installed it w/o checking. Would it not pump if the circlip was buggered up? I also forgot to fill the TC w/ATF before I installed it.

Was it a new or used torque converter??

elninoalex · #6 03-26-2006, 04:37 PM

Quote:

Originally Posted by budfreak1

Was it a new or used torque converter??

It is the TC from the donor tranny w/80K.

I didn't see any ATF in it when I seated it onto the tranny.

Budfreak · #7 03-26-2006, 04:59 PM

Quote:

Originally Posted by elninoalex

It is the TC from the donor tranny w/80K.

I didn't see any ATF in it when I seated it onto the tranny.

I can't imagine no fluid being in the TC when it was just removed from a tranny and put on another one. It had to have fluid in it to work in the other tranny, and it doesn't just drain out.

TomsSVX · #8 03-27-2006, 11:47 AM

is it making noise?? I remember when I didn't line up the TC right for the first time.... Crushed the oil pump to death

I hope you didn't do the same

Tom

elninoalex · #9 03-27-2006, 03:09 PM

Thanks for all the input. I read several writeups on seating the TC so I'm pretty sure I got that right, but not 100%. It never made any noise like it was trying to do something, when it was running. I didn't pull the pan and look at the internal filter. I already yanked it this AM. At least I'm getting quicker, I got it out in an hour and a half this time. I'll check it out and see if I can find anything. Of course I may be installing a spare 5 spd in it while I'm checking out the AT. We'll see. I really want to have a good 4eat in this car, but out of the five 4eats I've had in my Subes, not a one was worth a crap.

Stephen

svxfiles · #10 03-27-2006, 03:30 PM

Quote:

Originally Posted by elninoalex

Thanks for all the input. I read several writeups on seating the TC so I'm pretty sure I got that right, but not 100%.
Stephen

As you bolt, and after the trans is bolted up to the engine, but before you install the torque converter bolts, the torque converter should still spin freely.
If it locks up it was not seated.

I have seen some wrecking yards pull off the trans pan, and remove the filter, just to make sure you install a new filter.
AND, some wrecking yards leave a plastic baggie in the pan with the pan bolts in it!

We had someone on the Network have a dented trans pan, that restricted the oil flow into the filter pickup...

elninoalex · #11 03-27-2006, 03:33 PM

Well......................Uh...................mmm m..................Ok I guess I didn't have it in all the way. DTOH!!! I sat there and spun it around for a couple of seconds and gave me one extra clunk that sat it down another 3/8 or 1/2" so that the flexplate side of the bolt tangs are exactly flush with the bellhousing mating surface. Before, the TC side of the tangs were flush. You live and learn I guess.

Now the question is: Do I dare just slap it back in like it is or is there anything I need to carefully inspect first?

Stephen

svxfiles · #12 03-27-2006, 03:52 PM

Quote:

Originally Posted by elninoalex

Now the question is: Do I dare just slap it back in like it is or is there anything I need to carefully inspect first?

Stephen

If it was not making any shreiking or grinding sounds, and was not pumping trans oil all over the ground, then I would re install it and check the pan filter.

TomsSVX · #13 03-27-2006, 05:13 PM

check the end of the pump drive and make sure it is not broken or ground down. Also might want to check and be sure that the pump isn't messed up. Take a light and look down the input shaft.

Tom