weird transmission behavior - Ford Transit USA Forum
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post #1 of 2 (permalink) Old 03-29-2015, 10:26:PM Thread Starter
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weird transmission behavior


I have a 250, lwb, med roof with the 3.5 eb and ls 3.73 (tow group). I just clicked past 5000mi, I deliver for a high miles. Also I tow quite frequently...anywhere from 1000lbs up to 5500lb

Overall I am very pleased. The transit has gobs of power and torque. There has not been a situation where I have a want for more power.

So here's my question....does the transit have any type of hill or descent control? About 90% of the time the transmission goes into 6th and stays...towing or not.

However, sometimes when descending a moderate hill, the transmission will downshift rather abruptly to 5th or even 4th. It does not matter if I am coasting or slightly braking....does not matter if I have speed control on or not.

As I mentioned, only every once in hilly driving. Seems to happen slightly more if I am towing. It is the only issue...transmission is smooth otherwise. Nothing else weird.

Just seems like it is downshifting when I don't want it too.

Can the dealer reflash transmission program?

Any ideas?

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post #2 of 2 (permalink) Old 03-29-2015, 11:56:PM
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If you are in "tow haul" mode, descending a hill, the trans will (or should) downshift each time you hit the brake pedal.

It may also have a feature, like Honda has, called grade logic, when descending a hill, with your foot off the gas, the computer senses a speed increase and will downshift to keep the speed in check.

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