904 trans won't move in mornings

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jimmieblueey

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torque converter drains back into trans overnight....wrong filter or missing valve body gasket or loose valve body ?????
 
Start the car in neutral from now on, and let the fluid get back into the converter, before you put it in reverse, or forward gear.

There is a valve body modification for that issue, that's supposed to help with that problem, but starting it in neutral should be easy enough.
 
converter drain back is a torqueflite know issue...my 99 Dodge Ram does it also...so they never fixed it.
 
I dind't realize that this was universal. I've certainly experienced this too. Does this present a risk of damage?
 
They "tried" to fix it in the Ram/ Dakotas by putting a check valve in the cooler line, but even that has it's problems, and most of us end up removing them, because they can stick, and that is worse!!
 
67Dart273 said:
They "tried" to fix it in the Ram/ Dakotas by putting a check valve in the cooler line, but even that has it's problems, and most of us end up removing them, because they can stick, and that is worse!!
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My 904 does something like this once and a while ..even when running shifting down into first and engaging into first when parked. It was rebuilt but I don't really think he took too much time or really payed too much time listening to my explanation on how it was behaving. Didn't really matter in the end though, I just parked the car in a garage and saved money for a whole new 340 727 set up. Out 1200 dollars though pretty stupid of me not to do something about that:realcrazy:
 
My 2wd. 96 Dakota does it but my 4wd. 96 doesn't. My 70 Swinger does it as well.
 
As TrailBeast mentions, Start it in Neutral and it will fill much faster. You can also use a bottle of Lucas stop slip, this will make it better for a while. When I was young and dumb(er), I would poor a once or so of brake fluid down the dipstick. This softens the seals and swells the rubber seals.
 
jimmieblueey said:
torque converter drains back into trans overnight....wrong filter or missing valve body gasket or loose valve body ?????
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Sonnax has an aftermarket shift valve that completely fixes this problem. It allows full fluid flow as soon as the engine is started.
I put it in my dodge Cummins 47re and completely eliminated this problem.
 
Install any of the kits Transgo make for the 904/727. My Challenger suffered this problem until I installed their smallest kit (SK-TF). Any of the Transgo kits will cure this problem.
 
transman said:
Install any of the kits Transgo make for the 904/727. My Challenger suffered this problem until I installed their smallest kit (SK-TF). Any of the Transgo kits will cure this problem.
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For the fluid level/converter fill, yes.
The stage 2 Transgo kit I installed had a new manual valve designed for letting the fluid flow in park so the converter filled when the car was started, and it also lets you check the fluid level in park.
I know you know this, I was mentioning it for a little more information on it for others.
 
SGBARRACUDA said:
As TrailBeast mentions, Start it in Neutral and it will fill much faster. You can also use a bottle of Lucas stop slip, this will make it better for a while. When I was young and dumb(er), I would poor a once or so of brake fluid down the dipstick. This softens the seals and swells the rubber seals.
Click to expand...
I still haven't figured out why some do this and some don't. I have owned a dozen or so Mopars and the only that does this is my 96 Dakota 2wd.
 
toolmanmike said:
I still haven't figured out why some do this and some don't. I have owned a dozen or so Mopars and the only that does this is my 96 Dakota 2wd.
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A worn pump and/or converter hub bushing can still work and not be noticeable as far as driving it.
These two things are what allows most converter drain back, and the more that does drain back the longer it takes to refill the converter.
Holding the RPM's up a little after startup helps it refill even faster, since the pump is driven directly off the engine via the converter hub.
 
TrailBeast said:
A worn pump and/or converter hub bushing can still work and not be noticeable as far as driving it.
These two things are what allows most converter drain back, and the more that does drain back the longer it takes to refill the converter.
Holding the RPM's up a little after startup helps it refill even faster, since the pump is driven directly off the engine via the converter hub.
Click to expand...
And that's probably it. The 96 has 180+ rounds on it.
 
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