Torque Converter Problems

Just found this forum. I have a 2006 Tacoma with the same shutter. 2 New torque converters and a separate rebuilt transmission and new converter and after 5 months the shutter came back. Every time they replace the converter the problem goes away. After 5-6 months I have the same problem. Something is causing the torque converts to go bad after 6 months?

 

Yea that's was my main concern that I'd be coming back and just be a money hole over time.
I wish you luck, the dealer told me a complete transmission was recommended when I had the truck.

 

Has the problem returned? Mine stopped after replacing the Torque converter but the problem returned after 6 months. Somethin is ruining the torque converters and I'm not sure what.

 

I have been having the same problem for years. My taco is on its FOURTH transmission. My truck recently overheated from a catastrophic failure of the transmission cooler located inside the radiator. I wonder now if this has been leaking for a long time, contaminating the tranny fluid.

 

Sounds like a possibility. These transmissions are pretty tough, I can't imagine the rest of the truck outlasting 4 transmissions under normal circumstances. How many miles do you have? The pink milkshake was a pretty common issue on older 4runners and some Nissans recently. You could bypass the radiator entirely to eliminate the chance of the radiator contaminating the atf again. If you did bypass the radiator you should have a gauge of some kind to monitor atf temps, your tranny will overheat easier with the radiator out of the loop. Most people go with a larger cooler (which you absolutely must have if you bypass the radiator) that has a thermostatic bypass built in to help keep temps in an acceptable range. I haven't bypassed my radiator yet, but I plan to in the future, or maybe just replace the radiator... I haven't decided yet. From what I've read from people that have done it is that your will be fine after bypassing the radiator as long as you're moving, but temps will rise fast in stop and go traffic or low speed towing/off-roading...the air cooler isn't as effective as the liquid to liquid cooling of the radiator. This is only the second 2nd gen that I've heard of this happening to. It's not too common on the second gens.