trans problem 700r4

[oldgraycat]

newbie here have a 84 elky with a 700r4 trans that will not shift into od or 4th any suggestions on how to daig the problem how the shift daigrhams or ?? thanks in advance

 

[ed1948]

newbie here have a 84 elky with a 700r4 trans that will not shift into od or 4th any suggestions on how to daig the problem how the shift daigrhams or ?? thanks in advance

I can only offer very basic info: I did a 700r4 swap and controlled clutch lock up with a switch. Also important that the carb to trans cable be adjusted correctly.( It's been 20 years, I forgot all the good stuff)

 

[oldgraycat]

I can only offer very basic info: I did a 700r4 swap and controlled clutch lock up with a switch. Also important that the carb to trans cable be adjusted correctly.( It's been 20 years, I forgot all the good stuff)

nothing been done under hood lately still has ecm although some items are missing also looking into aftermarket controller any suggestions

 

[CWPottenger]

1st thing to check is the TV cable. If it isn't correct it will not shift right and damage can occur very rapidly. As for an aftermarket controller for a 700R4 there is none, it is a completely mechanical transmission no electronic control.
The next possible issue is a sticky servo or governor.

 

[ed1948]

It's a simple trans...no computer connections. The TV cable adjustment controls shifts and an electrical connector on the trans controls the clutch lockup.

 

[1evilregal]

sounds like it may be rebuild time.... went through same issue on mine on a couple different cars. probably sheared the splines on the shell, it's a common problem on the 700r4's, or the clutches may have just finally given up... given the age/mileage of our cars, this is a truth we have to face.last one that went out on me was due to it's mostly sitting for 4 years...
this is where they usually shear

https://www.globaltransmissionparts...ll-extra-heavy-duty-washer-style-700r4-4l60e/
let us know what you find...

 

[oldgraycat]

thanks for the input guys, would like to know how to diag the problem . such as what makes the trans shift what controls the shift , how it works

 

[Qdub24]

thanks for the input guys, would like to know how to diag the problem . such as what makes the trans shift what controls the shift , how it works

The TV cable controls the shifts

It's a simple trans...no computer connections. The TV cable adjustment controls shifts and an electrical connector on the trans controls the clutch lockup.

 

[oldgraycat]

tv cable ok connector on trans is hooked up what and how is the signal sent to the trans through the elect connector on the trans

 

[Qdub24]

It's not electric, it's mechanical. You have to manually adjust the cable to get it right. I got my '87 MCSS for peanuts because the 200-4R was believed to be toast, but the tv cable had been adjusted completely out of wack and it was low on trans fluid.