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Broke the trans pump??? Here is how to fix it..

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Old Jul 3, 2003 | 06:27 PM
  #1  
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Default Broke the trans pump??? Here is how to fix it..

My troubles
I put in a YPT4400... and fired up the car today... no gears.. everything acts like neutral.. linkeage is hooked up.

The converter was very hard to turn on the input shaft. I seeked advice and the consensus was to just put it on, it should be ok... well.. now I have no gears.

The solution
The converter should spin freely when put onto the transmission. If it takes any effort at all something isn't right. Through the knowledge I obtained from this thread I was able to put together a trans pump info page for those of you who wish to attempt this yourself. It's not really that hard, just takes some time. You save labor $$ by doing the work yourself. My mistake only costed me $125 when it has costed others near $1000.

The link to the page is in my signature. Or you can click here:
http://www.dxsoftware.com/magnus/
In the left contents menu just click Trans Pump.

I hope this helps.

Once again thanks to all that chimed in this thread with useful and supportive information.


Below is the learning process I went though. It's good reading material that I will leave in this thread.
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Old Jul 3, 2003 | 09:29 PM
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Default Re: Installed new converter, now I have no gears...

if you just bought the converter new I would call Yank and ask them about what you need to do, could be an easy fix.
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Old Jul 3, 2003 | 09:46 PM
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Default Re: Installed new converter, now I have no gears...

you're not gonna wanna hear this, but I had the exact same issue myself when I re-installed my tranny. I didn't seat the convertor properly, did you spin the convertor till the pump drive (that notch in the collar that goes over the input shaft) properly? I didn't on my 4L60E, torqued down the tranny, and the converter and destroyed my tranny pump. Do you have a tranny cooler at all (probably should with that high of a stall if you plan on driving it on the street) check the lines and make sure you have fluid traveling through the lines. it sounds like you don't have any fluid pressure.
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Old Jul 4, 2003 | 11:22 AM
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Default Re: Installed new converter, now I have no gears...

speedisss@aol.com, I think I have the same problem.

I do have a tranny cooler.. but I don't need to pull a line off to know I don't have line pressure. What did you do to fix it? Can it be fixed from the underneath? I'll probably pull the trans anyway.

Thanks for the reply man... I really appreciate it.
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Old Jul 4, 2003 | 02:49 PM
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Default Re: Installed new converter, now I have no gears...

Yikes, I was about to respond with what the other guys said. You have to make sure you properly seat the converter or problems will immediately appear. May not make you feel any better, but this happens alot. I did it on my very first converter swap on a 79 Trans Am I had when I was back in high school. It sucks.
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Old Jul 5, 2003 | 12:04 PM
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Default Re: Installed new converter, now I have no gears...

exactly what happend on my car. front pump is gone. good thing is the parts are not that expensive for a rebuild kit. labor at tranny shop bent me over. so i guess if you could do the work yourself them you could save some cash
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Old Jul 5, 2003 | 12:18 PM
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Default Re: Installed new converter, now I have no gears...

Can the pump be done from underneath or does the tranny need to be removed?
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Old Jul 5, 2003 | 01:35 PM
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Default Re: Installed new converter, now I have no gears...

Most likely your pump dude.

If your converter is turning engine speed then so is your pump suposed to be. If you've got enough oil in the pan to cover a properly installed pickup filter, and with your cooler lines off, trany fluid should be spraying all over the place. If no fluid spraying and your fluid level not going down(I'm assuming your checking the fluid level and relize you gotto fill this new converter"no sarcasizm intended") ... Then pull the trany and pull the pump. Putting a pump in one of these things is not that difficult.

Don't run it too long as not to tear up your new converter any more.

My trany is scattered in my garage right now waiting on parts. I can maybe help you some with this.

Sorry about your luck ... Ron
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Old Jul 5, 2003 | 01:48 PM
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Default Re: Installed new converter, now I have no gears...

Hey guys it's cool... it's all a learning process and you can't expect every single big mod to go flawlessly.. I thank you all for your help.

Now all I need is a little how-to on tranny pump swap? Car is raised and I'll be dropping the trans pan in a few, just to look.. however I'm assuming Ih ave to drop the entire tranny and remove the pump out through the front.

The car only ran for about 5 minutes.. so I hope everything is ok.
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Old Jul 5, 2003 | 02:58 PM
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Default Re: Installed new converter, now I have no gears...

to get to the pump gotta drop trans. looking in the pan will do nothing other than looking for little metal shavings or something from when the front pump took a crap. dont worry about converter. its fine. i drove about 2 miles on my PI before my trans did the same thing. there are some special tools needed to pull front pump and to align everything. so hopefully you have those or at least some access to them
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Old Jul 5, 2003 | 07:38 PM
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Default Re: Installed new converter, now I have no gears...

Trans is dropped.. took all this time going patiently and chilling..

Can't get that front cover off to reveal the trans pump.. I'll pick it back up tommorow.. any more suggestions?
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Old Jul 6, 2003 | 10:56 AM
  #12  
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Default Re: Installed new converter, now I have no gears...

to pull the pump:

** special tools/suplies: 1/2" drive torx bit. Trans lube to hold check ***** in place dureing reassembly. a couple big cans of non petrolium base cleaner(I use brake clean).

* pull the bell housing off(makes job a whole lot easier) torx head socket needed 1/2" drive prefered. bolts a very tight. I used a cross bar to keep trans from spining while breaking the torx head bolts loose.

* pull valve body down(you need it off to acces holes to pop the pump up). CAREFULL of check *****. try to keep them in place(for referance)on the valve body plate.

* unbolt the pump and carefully pop it up out of it self alighing seal seat.

... I have a Helms manual and a digital camera and can send you some pics of what, where, and how if you'de like. I have to work at home all day. I'll check back with you later.

... Ron
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Old Jul 6, 2003 | 02:23 PM
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Default Re: Installed new converter, now I have no gears...

Ron, I'd like all the pics and instructions I can get.

I was under the impression that I had to pull the front cover off of the trans... the one that the shaft goes through.
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Old Jul 6, 2003 | 04:26 PM
  #14  
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Default Re: Installed new converter, now I have no gears...

Yes: the front cover is what you pull off(that is the pump)

I will go right now and take a few pics and send them to you e-mail. I'll first send you an e-mail with no attatchment so you know it's me.

Ron
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Old Jul 6, 2003 | 05:51 PM
  #15  
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Default Re: Installed new converter, now I have no gears...

You,ve got pics.
let me know what else you need.
... Ron
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Old Jul 6, 2003 | 06:02 PM
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Default Re: Installed new converter, now I have no gears...

Ron, thanks a TON!

I'm pretty sure that should be good for now. I assume I seperate the pump halfs and install my new pump half and then just reassemble.

Can I do this all with the tranny upside down or should I have it right side up. It's currently out of the car. I just don't want check ***** to roll all over.
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Old Jul 6, 2003 | 08:51 PM
  #17  
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Default Re: Installed new converter, now I have no gears...

Do it with the trans verticle(pointing straight up). Try it first with-out removering the valve body. You might be able to get into the access holes(the pic with the 2 screw drivers showing poping the pump up) with the valve body still in place.

You might want to pull it apart first to see what all you need before ordering parts, just so you don't find out you need something else.

... Ron
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Old Jul 6, 2003 | 08:56 PM
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Default Re: Installed new converter, now I have no gears...

I had the same issue.. The pan did not have any shavings, but I had stuff inside of the tranny. I would get it rebuilt just to be sure.. I would hate for it to make its way to your convertor and kill that also....
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Old Jul 8, 2003 | 12:42 PM
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Default Re: Installed new converter, now I have no gears...

Ok.. I began to do some work. I was able to crack 1 bellhousing bolt but the bit just spun in another.. those are on there TIGHT.. and I'm pretty sure the valve body has to come off to pry the pump out of there.

I just e-mailed FLP and asked how much to swap the pump for me.. we'll see what they say.
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Old Jul 8, 2003 | 05:15 PM
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Default Re: Installed new converter, now I have no gears...

im guessing about 1K for the pump/parts/labor. You will prolly want to flush the converter because there are probably metal shavings from the broken pump floating around inside the converter now. next time, make sure you get three clicks before you force the trans back on.
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