My 03 v6 auto does it as well. Of all the things I really love about my Tundra, I have to say this is one thing I don't care for. I started another thread in the "v6" section about this some time ago because it concerned me so much. Their were a number of replies and everyone said much the same. I called around to a few service advisors and all say its in the programming and all is well. I switched out to mobil 1 at 1100 mi. for some assist.
This looks to be normal behavior for the 3.4, but I would really like to find a way to defeat this. It is most likely done to satisfy emissions on a cold engine, but I would rather not sacrifice possible engine longevity for start up emissions.
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