['49 Ford Coupe]

You might check this link out for some clues:

700R4 Won't Shift Out of 1st

Hello all, Please help me figure out why my 700R4 is not shifting correctly. Under normal driving, it will not shift out of first gear. It will...

www.jalopyjournal.com

And

700R-4 Wont shift outta first gear. - Third Generation F-Body Message Boards

Transmissions and Drivetrain - 700R-4 Wont shift outta first gear. - :mad:I just installed a 700R-4 I got into my Trans Am. I got a TPI 350. Whe I went to test drive it, it took off fine then got up to 25 mph and wouldn't shift period. When I let off the gas and get back into it it wont kick...

www.thirdgen.org

 

[south65ss]

Pressure checked the band and it works fine. Went trough those links '49 Ford and have a couple more leads. Will follow them as soon as I finish checking the valve body.

1-2 throttle valve assembly looks good. Wasn't sticking or dirty. Will check all others just in case.

 

['49 Ford Coupe]

Don't forget, call Dana if you don't find something that sticks out at you

 

['49 Ford Coupe]

Here are some references.. I've never heard of before...

700r4 issues upshifting 1-2 - Third Generation F-Body Message Boards

Transmissions and Drivetrain - 700r4 issues upshifting 1-2 - My trans has issues shifting up into 2nd, all other upshifts and downshifts are just fine, it does have a bit of a leak at the tailshaft and I plan to replace the seal, but I don't think that is the cause, i think something else is...

www.thirdgen.org

Also, I remember someone telling me that if the accumulators are very leaky, it won't upshift... so get those sonnax pinless pistons...

 

['49 Ford Coupe]

Time for a report ! ! ! !

 

[south65ss]

Not much new to report pal!

I already finished cleaning the BV and plate.

Looks like one of the servos spring was working broken at some time but the spring is fine now.
Right now I'm just waiting for te BV gaskets to assemble and test.
Yes! I will order the parts you suggested, but down here things happens at a slower rate. Could take a month to get the parts here so in the mean time I will keep testing what I can with what I have. In the next few days I will be installing the trans again, testing and reporting. Wish me luck!

 

[south65ss]

Solved!!!!
Or at least it works with the car on stands. Still have to play with the TV cable adjustment on the road but all 4 speeds shifts either manually or automatic. The last I done was disassemble and clean all the valves on the valve body. None looked bad or stuck but obviously somehting was going on there because it works fine now.

Thanks to all of you guys to take the time to help me solve this mistery. I will report hare as soon as I take the car on the street.

Thanks a lot!!!

 

[123pugsy]

Excellent news. Good luck.

 

['49 Ford Coupe]

GREAT ! ! ! ! ! ! !