What makes the TCC unlock?

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Sep 28, 2003 | 10:40 PM
  #1  
This is for the normal wiring of the 700-R4

I know when you tap the breaks, it should unlock, and also when you give it a lot of gas. When you drop to a lower speed I'm guessing it also will unlock.

Right now after my TCC locks up, anytime I let go of the gas completely, it unlocks. So if I'm going 75 on the freeway, and it's locked, and I let go of the gas, it unlocks. This is not normal is it?
I thought the ECM will read info from the TPS, and other sensors and determine when to unlock it. Shouldn't it be able to cruise for a little bit at 75 miles an hour without throttle and still stay locked up?

Could the wiring be wrong or something else, or is this normal. I know it is not me shifting into third because once I feel it unlock, I have put the car into Drive from OverDrive and then I definitely feel it shift to third... so I'm pretty sure it's the TCC unlocking.

Anyway, any help you guys can provide would be great.
Thanks.
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Sep 29, 2003 | 12:59 PM
  #2  
It's normal.
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Sep 29, 2003 | 01:51 PM
  #3  
It is normal... I have thru prom burning disabled the unlock of the TCC when I take my foot off of the throttle... better mpg..
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