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700r4 has 4 gears now, but shifts real lazy, TV pressure issue?

Russell

Russell

3/4 ton status
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Hey guys, as the title says, my 700r4 now has all four gears, and shifts relatively well now. However, the 1 - 2 shift is extremely lazy, it isn't really a shift so much as a lazy slide from one gear to the next. If I am at a slower acceleration, it does just fine, but when I give her some gas, it feels just terrible when it shifts. Again, I've got as much TV pressure on it as I can, after modifying my bracket to move as far back as it'll go. Its almost like my TV cable is stretched or something.
 
I have never had a 700r4 that is stock and shifts hard from 1-2. There is a valve that keeps the 1-2 from being hard in the valve body it is actuated if the throttle is more than 1/2 open. On mine if I floor it 1-2 is like a slide like you say if I take my foot off of the gas right before it shifts it will shift decent. 2-3 and 3-4 are like normal auto shifts. This is just my experience please do not take it as fact.

Ira
 
I'm gonna take a video of how the tranny shifts, and let you guys tell me what you think. It shifts nice when you take it easy, but if you get on it, it feels absolutely terrible, even for a 700r4!
 
Don't miss the simple stuff. Make sure your fluid level is right and in good condition. You can check for cable stretch without even dropping the pan. Just adjust it to full tight and then (without the engine running) stomp the gas. If the adjuster moves, then the cable is tight enough.

It sounds like you've done some work on this tranny lately?
 
Is the cable adjusted properly, or have you tried to reset the cable tension again? Id check the fluid, and try and reset the cable tension. If thats outta whack, it will shift funny, and you'll burn it up eventually. You know that though.

They are like a detent cabe on steriods. They control so much stuff in there. I got a new Delco one a while back. Wasnt too much. Might be cheap insurance if you ask me. Mine was stretched (but I thnk the tranny shop did that - whole other story).
 
I'm starting to think that my cable may be stretched, cause it doesn't wanna pull out from the adjuster anymore. I'm gonna get a new one, and see if that helps.

And yeah, I've done a fair bit of work on the stupid thing already, lol, had to swap valve bodies out.

I got it to shift relatively well now, just really sucky shifting if you are above 1/2 throttle. However, it doesn't wanna enter overdrive, so something it still not happy. I'm planning on taking it to a tranny shop, and get the guy I know there to take it for a test drive with me and see how it feels it him. The engine is another story too, Runs real rich all the time, and idles really high. I think it's got a mis-fire too, cause at an idle, its really rough, and bogs pretty bad off the line / looses a lotta RPMs and takes a few seconds to recover when you give her some gas to get her going, then let off right away (such as when backing it up)
 
does your speedometer work? Might be a bad signal form the VSS. I broke my cable a while ago, havent installed the new one yet. VSS controls overdrive. No overdrive kinda sux, but Im not driving the Blazer right now anyway.
 
Yep, VSS is working correctly. It'll go into 4th at lower speeds, but not at highway speeds, it reports a TCC unlock due to a 4 -> 3 kickdown at those speeds, so not only am I not in overdrive, but the TCC isn't remaining locked up either. Amounts to some gas milage comparable to my old GMC 3/4 ton, lol
 
Well, I got the truck a new TV cable, and WOW, that thing shifts like a brand new transmission now!

Now on to getting that engine running tip top! Its very rich, idles high, and has an intermittent tick that I am thinking has to do with plug wires...
 
700r4 shifting lazy

Russell said:
No, the other shifts are a bit lazy too, but the 1 - 2 is the worst.
Click to expand...
This is really simple, your TV cable is not adjusted correctly. This is how you do it... You will need a friend to push down the accelerator all the way to the floor, and hold it down while you press the tab located right behind the linkage bracket, push the black plastic back until it stops. When you reach the point where it stops release the tab. Now your tv cable is locked and set to perform properly.
 
I am trying to figure out which truck this was?

I'm guessing it was either my old 77 C10 Stepside or my 89 C1500... Holy blast from the past!! That was almost 10 years ago haha
 
I would have just graduated highschool in 05. This was probably in my 89 c1500. Most unreliable truck I've ever owned. Though my 2012 came very close...
 
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