Pre-1997 Models

what controlls tranny shifting on a 94?

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Old Sep 12, 2010 | 12:13 PM
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jptrader207's Avatar
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what controlls tranny shifting on a 94?

94 f150 5.8 auto,what controlls the tranny shifting?the reason I ask is cause the tranny dont down shift on it own and it seems to up shift quick on its own.
 
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Old Sep 12, 2010 | 02:19 PM
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The E4OD transmission is controlled by the Powertrain Control Module i.e. "the computer."
The principal (but not the only) inputs it reads for control are: engine RPM, throttle position, vehicle speed and transmission range.

The stock program for the E4OD tends to not call for part-throttle downshifts. Unless the Throttle Position Sensor reads at or near WOT (wide open throttle) the tranny will usually remain in 3rd or 4th
 
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Old Sep 13, 2010 | 02:11 AM
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This caption describes it fully:

 

Last edited by Steve83; Sep 13, 2010 at 02:14 AM.
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