I was reading some past posts on the subject....but was unable to find any symptoms of what it feels like, or what to look for. Please enlighten me on the subject... Just trying to understand a little better...Gotta start somewhere.
Thanks

 

Find a nice level stretch of road where you can cruise above 50 mph. Keep the speed steady using the accelerator, not the cruise control. While keeping your foot on the accelerator, slowly press the brake pedal - if the TCC has been locked, it will unlock and the RPMs should rise a couple of hundred when it unlocks.

Another method is to find a stretch of road where you can accelerate steadily (not WOT), and count the number of "shifts". If the TCC locks up in 4th, you should have 4 shifts.

 

I'll assume a TH700R4

If your in D or OD range, drive up to speed with part throttle. Either listen to the engine RPMs or watch your tach as the tranny shifts into its final gear.

You will hear the engine RPMs drop a couple of hundred RPMs 3-5 seconds after the final gear change. This is the torque converter locking up.

Now give it a little more gas. You'll notice a few hundred RPM rise. This is the torque converter releasing.

Also if you let off on the gas, the vehicle will coast for about 4-5 seconds. Then the RPM's shoot up a few hundred RPMs and you can feel more engine braking. The torque converter clutch is applied in 3rd or 4th during decel.

 

thanks guys