700r4 help please!!

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C10man

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Just got the engine vacuum lines redone and now my trans (In an 86 c10 carbed 305 all original) wont shift into 4th until i get to 85 mph and my overdrive isnt engaging. Also the shift points are higher and i have to let off the gas to get it to shift in the lower gears. Do i need to adjust the TV cable or is it something else?
 

PrairieDrifter

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Adjust the tv cable, that should fix it.
 

MadOgre

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Adjust the TV cable but also inspect the vacuum tubing to ensure that the TCC switch is plumbed correctly.


TV cable should be taught at WOT
 

350runner

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your tv cable is too tight. adjust it so it shifts@55+mph

Sent from the dust in front of you!
 

chengny

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TV cable adjustment

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The TV cable should not be thought of as an automatic downshift cable. It controls line pressures, shift points, shift feel, part throttle downshifts, and detent downshifts. The function of the cable is similar to the combined functions of a vacuum modulator and detent downshift cable. The TV cable operates throttle lever and bracket assembly, Figs. 1 and 2.

Procedure:

1. Stop engine

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2. Depress readjust tab, Fig. 3, and move slider through fitting, away from lever assembly, until slider stops against fitting. Release readjust tab.

3. Open throttle lever to full throttle stop position to automatically adjust cable, then release throttle lever and check cable for sticking or binding. Do not use accelerator pedal to rotate the throttle lever, rotate it by hand at the carburetor.

4. Road test vehicle. If delayed or only full throttle shifts still occur, proceed as follows:

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A. Remove oil pan and inspect throttle lever and bracket assembly, Fig. 4.

B. Check TV exhaust valve lifter rod for distortion, or binding in control valve assembly or spacer plate.

C. Make sure TV exhaust check ball moves up and down in conjunction with lifter.

D. Make sure lifter spring holds lifter rod up against control valve assembly.

E. Make sure TV plunger is not stuck.

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F. Inspect transmission for correct throttle lever to cable link, Fig. 5.



Some more (not much) detailed information:


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HotRodPC

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Yep, I suspect you hit something on the cable while doing your vac lines and lost your TV cable adjustment.
 

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