700r4 3-2 shutter

[spanky55amg]

The quick answer is take it back to the rebuilder, but I am wondering what you all think it is before I do that. Im not a transmission guy at all. R&R and thats about it.

I have a 700r4 that over the summer developed a 3-2 shutter on medium to heavy acceleration. I couldnt reproduce it very well consistently.

Fast forward to last night. 3 -2 downshift while braking and coming to a stop, I can produce it almost all the time.

What things could it be?

 

[Matt69olds]

Make absolutely sure the TV cable is adjusted correctly. After that, it’s up to the builder to fix.

 

[1987 GMC Jimmy]

The torque converter in my Caprice is well past its prime, and it’ll do this sometimes. The clutch inside shudders and chatters sometimes. Worst locked up in 4, plenty in 4-3, but sometimes even in 3-2. I put the red shudder fix stuff in it, and it helped a lot, but if you have a bad TV for whatever reason, you gotta take that back. You can try running it a little with the TCC unplugged and see if that helps you. I’ve got a torque converter, but the tranny has 280K miles, and I’m scared of pulling it just for the trans to cook a a few months later.

This is a long shot IMO, but I think it’s something to try.

 

[spanky55amg]

Make absolutely sure the TV cable is adjusted correctly. After that, it’s up to the builder to fix.

This thing has been running for ... 8 months and its been all of the sudden.

And I get there are drums, steels, clutches, bands, and servos. I get the bases for how they work. So When I say Im not a tranmission guy, I just dont KNOW them. Like the logistics to how it all works. such and such band holds so and so drum and that gives you first gear. Yeah, I dont know that stuff.

 

[spanky55amg]

Thanks guys. Yeah, it feels like torque converter lock up, but knowing that it isnt involved in a 3-2 down shift (but still knowing it could be a converter problem.) It has a warranty, I still have like 4 months on it. I dont want this transmission cooked. I was just looking to see about info. He will prob want to drive it to feel it, so Im not taking it apart.