Originally Posted by illegal regal
i have a 78 regal fastback. i just swapped out my th350 for the 700r4...it just been built and installed, the first time i drove it...it shifted well...1st...2nd...3rd...and 4th. my line sprung a pin hole leak and put me like a lil over a quart low. i filled it up and now it wont come out of 1st!?! if the t.v cable is still hooked up...what can it be???
Shifts are controlled by the interaction of the TV valve and governor. If adjustment of the TV cable doesn't restore function, then the options get more complicated and expensive.
Start with checking the TV cable adjustment and the operating fluid level. You need to cycle the tranny thru reverse and drive, then check the fluid level at hot to see where it really is. If these don't do it then you'll have to start with pressure checks, this is where it starts getting complicated for the hobbyist.