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7AT - fluid temp vs. line pressure?

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Old Jun 7, 2011 | 08:39 PM
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Q8y_drifter's Avatar
Q8y_drifter
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7AT - fluid temp vs. line pressure?

Here's something I noticed while reading the Infiniti FSM. According to the text, the TCM raises the line pressure when the fluid temps is lower than "normal". Does that mean installing a big trans cooler will increase line pressure which speeds up shifting? Also, what temp. is considered "normal"?

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Old Jun 12, 2011 | 06:59 AM
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I may be misunderstanding this, but doesn't that '5AT' on the top right imply that this might just be for the 5AT auto?
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Old Jun 12, 2011 | 10:12 AM
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IMHO, line pressure is up to compensate for cold TF. Hot TF moves better in the lines.
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Old Jun 12, 2011 | 05:01 PM
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Originally Posted by borfoo3
I may be misunderstanding this, but doesn't that '5AT' on the top right imply that this might just be for the 5AT auto?
I drive a 5AT G sedan so the FSM is differentiating between the 6MT and 5AT, rather than 5AT and 7AT. I'm assuming the same function is applied on the 7AT.
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