I was wondering why the shift quality in my car is good, when it is cold. After it warms up it tends to shift sloppy. It shifts hard at Wot. The transmission is stock, my car has a little over 59,000 miles. The fluid is clean and unburnt. Could it be a mis-adjusted TV cable?

Thanks
Jeff

 

It never hurts to check the adjustment of the TV Cable, but it sounds like something might be leaking. Remember, the colder the fluid it, the thicker and the less likely to leak.

 

Do you mean internal leakage? My car has zero external leaks, anywhere!

 

hurm

 

Yeah, definatly an internal leak lowering apply pressure. Its odd though, because the 4T60 was notorius for doing the opposite. The seal to the input clutch would leak when cold, and the car wouldn't even move until the seal got warm and started sealing. But hot thin fuid can travel easier where cold thick fluid can't, just a thought.

 

Jeff, I asked the same question month's ago with no avail. I think it has to do with a combo of cold start power and cold trans fluid. My T/A does the same thing at cold start up. It would be nice to keep that firm crisp shift all throughout a road trip. I guess a shift kit might help some for hotter temps , but then again it would probably be hell on the drivetrain at cold start up.

 

getting a trans cooler will help. I have the same problem of the shifts getting sloppy and the cooler helped alot to cover it.

 

I was thinking about getting a tranny cooler anyway. How would I go about finding a internal leak? I guess I would have to take it to a transmission shop, and have them check line pressure?

 

I don't think you have any problem. Fluid viscosity changes with heat. Most automatics will tend to have more overlap when they are hot. Unless you are getting a noticeable slippage chances are the box is OK. You might want to consider a synthetic ATF. 59k the box is still considered "young" as long as it has not been beat and you should not have a problem switching over. When did you last do a fluid change? Remember even if the fluid looks good if it's been in a while the additive package deteriorates. Also fine tuning the TV cable in very fine increments can alter line pressure to eliminate overlap time.

 

Fluid and filter was changed 2500 miles ago. What's the best way to adjust the TV cable for optimum shift quality?

Thanks
Jeff

 

www.technicalevolution.com/tv.htm

 

Follow transfixleo's method for the initial adjustment and not use the "book" method. do a search for it. Also make sure that whatever setting you use you have some line pressure at closed throttle or the car will literally peel out when you stick it in drive. Probably not too good for your trans.

 

To adjust the TV Cable skip the book method and do this: Press the 'D' shaped lock button on the adjuster and loosen the cable setting (The black housing that the metal cable is in will move forward). Now, have someone floor the gas pedal while you check to see if the throttle plate is open all the way. Usually they are off a little and will wiggle. Do whatever you have to do to get it open solid. Now, with the pedal still floored, press the 'D' button and pull the cable casing (the black tube) back as hard as you can (putting maximum tension on the metal cable) and release the button. You now have the engine, tranny and gas pedal all in sync at WOT. Mark the cable casing so if for some reason it gets moved you can know where to put it again. The problem with the 'self adjust method' is that it bends things and puts them permanently out of whack. It is also the full TV setting, which is theoretically what the GM method does.

 

Thanks for the responses! I am going to adjust the TV cable, this afternoon. I will keep you posted.



Thanks again
Jeff

 

I adjusted my TV cable this afternoon. Wow! what a difference. Instead of pulling on the housing towards the firewall, I had to push on the snout with a screwdriver. There was no way to pull on the housing, must be a later model TV cable on 92's. Thanks for all your help!


Jeff