Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

Datamaster trans logging question

Old Sep 1, 2007 | 06:48 PM
  #1  
MichiganSkip's Avatar
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From: Three Oaks MI
Datamaster trans logging question

Anyone log trans activity when running Datamaster? I need to know what the "Slip RPM" is. And how it should look compared to the engine's rpm.
Thanks
Skip in MI
Old Sep 3, 2007 | 09:00 AM
  #2  
aifilaw's Avatar
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Joined: Aug 2006
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From: Longview, TX
slip rpm is the difference between the input shaft of the transmission and the output shaft.
when the torque converter is stalling then this will be a high number as the engine will be turning quickly and the tail shaft will not. When you are decelerating it will be a negative number, and when the torque converter is locked it will vary around -10 to +10 more or less TCC DC is never right, so I go by when the converter locks by the slip RPM.
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