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Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend> 700r4 trans, will not move
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Topic Review (Newest First)
04-17-2012 03:43 PM
Prof. T. Soggmeyer
Quote:
Originally Posted by blwn31
Brad, I didn't do it that way when I rebuilt my 700R4. But different strokes... Check every gear in manual position with minimum TV pressure and max TV pressure. For minimum TV pressure just read the gauge with the trans in the selected gear. To get max TV pressure pull the TV cable at the carb or throttle body all the way out and read the pressure. I have an ASTG manual all the mins and max pressures if you need me fwd them to you.

Keith
Thanks, I sure could use that info and would really appreciate it.
Brad...
Just put a new converter in and pretty close to firing it up and seeing what it does.
04-17-2012 09:27 AM
blwn31
Quote:
A guy I know who builds a lot of show rods was telling me last night that you have to idle the motor and keep changing gears to get the trans to "pump up". He says you do this to fill the valve bodies, and this must be done or the trans won't work. Any truth to this? I have never heard this before. My external fluid filter is full of fluid from the initial startup, I topped off the trans and still nada...wont move, it's like every gear is neutral. Brad..
Brad, I didn't do it that way when I rebuilt my 700R4. But different strokes... Check every gear in manual position with minimum TV pressure and max TV pressure. For minimum TV pressure just read the gauge with the trans in the selected gear. To get max TV pressure pull the TV cable at the carb or throttle body all the way out and read the pressure. I have an ASTG manual all the mins and max pressures if you need me fwd them to you.

Keith
04-17-2012 07:01 AM
dogwater So you put the pressure gage into the port that is above the gear shifter shaft, right.Then get the back tires off the ground with jack stands, you really don't want it falling off when its in drive......Engine ideling & warmed up, reverse & D1,2,3,4 should be in the 175 to 190 psi. range.If its lower than 150 psi. then something not right,I would think after you put on a known working torque converter an you do your pressure test and you have low psi. you might have something leaking or sticking inside the trans.To many seals/o rings/spools that might be glued together from sitting for so long.When ever you put on a new / empty torque converter pour in about a quart an a half of atf in it and fill the trans to the dip stick level. Start the engine let it run for 20 seconds then shut it off then refill the trans to dip stick level.One other thing when its idleing and in drive pull on the tv cable an see if that changes anything.Also go to bowtie overdrives and read their tv cable setup, its tv101 or something like that,I would read that before doing anything elas.
04-08-2012 03:45 PM
Prof. T. Soggmeyer
attempt #2

A guy I know who builds a lot of show rods was telling me last night that you have to idle the motor and keep changing gears to get the trans to "pump up". He says you do this to fill the valve bodies, and this must be done or the trans won't work. Any truth to this? I have never heard this before. My external fluid filter is full of fluid from the initial startup, I topped off the trans and still nada...wont move, it's like every gear is neutral.
Brad..
ps: I will put a gauge on the port and get a reading, just wondering if anyone has any insight or has experienced this.
04-06-2012 01:45 PM
Prof. T. Soggmeyer
update...

Quote:
Originally Posted by blwn31
I'm no expert but, I believe the deeper pan would only require more fluid to achieve the proper level of fluid above the filter. I'm not sure how far the seal should be up the filter tube, sorry I can't help you there.
When installing the torque convertor, slide it all the way in until it bottoms out, it may require a little turning to engage the pump. Once it's engaged, if you turn the convertor you will hear the pump rotate. Then once you install the trans, slide the convertor up the the flywheel, and bolt up. That should do it. If still no gears, install a pressure gauge to the main line pressure port on the drivers side above the gear selector and see what you've got.

Keith
Well the external filter is full of fluid so I think the pump is working ok. I dropped the pan and the inside shifter moves that stepped gizmo. What should I be looking for?
Brad...
04-05-2012 11:40 PM
blwn31 I'm no expert but, I believe the deeper pan would only require more fluid to achieve the proper level of fluid above the filter. I'm not sure how far the seal should be up the filter tube, sorry I can't help you there.
When installing the torque convertor, slide it all the way in until it bottoms out, it may require a little turning to engage the pump. Once it's engaged, if you turn the convertor you will hear the pump rotate. Then once you install the trans, slide the convertor up the the flywheel, and bolt up. That should do it. If still no gears, install a pressure gauge to the main line pressure port on the drivers side above the gear selector and see what you've got.

Keith
04-05-2012 10:10 PM
Prof. T. Soggmeyer
Quote:
Originally Posted by blwn31
A few dumb questions. Do you have the torque converter installed correctly? When you changed the filter and fluid did you remove the old "O" ring seal that goes on the pick up tube? It doesn't always come out when you remove the old filter. Then you push the new filter in and it falls out. If all is good, put a pressure gauge on the trans main pressure port above the gear shift selector, and see what you got.

Keith
Sorry it took so long to reply. Well.. when I installed the converter it went a little, then after turning it a bit it slid in quite a bit, so much so I almost smacked my fingers. It has a pan that has a drain plug and it looks deeper than stock. the old double o ring came out with the filter. However I am not confident on how well the new filter holds in the tube. How far in the tube should the new o ring go? AND is there anything I can do to help hold the filter in there? If the filter dropped out of the tube would this cause a "no go" in any gear situation?
Brad...aka..soggy
03-25-2012 10:39 PM
blwn31 A few dumb questions. Do you have the torque converter installed correctly? When you changed the filter and fluid did you remove the old "O" ring seal that goes on the pick up tube? It doesn't always come out when you remove the old filter. Then you push the new filter in and it falls out. If all is good, put a pressure gauge on the trans main pressure port above the gear shift selector, and see what you got.

Keith
03-25-2012 09:37 PM
Prof. T. Soggmeyer
same problem...

I got my trans out of a running s-10 6 years ago, I changed the fluid and installed 2 years ago, finally started the truck yesterday and it won't move. Tv cable is set right, it has a new tcc lock-up kit in it. Could it have a plugged filter from sitting so long?
Brad

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