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Old Sat, April 25th, 2009, 01:46 PM
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DJ,

Wow. Yeah. I see that. For some reason, the TCC isn't being commanded on....when it SHOULD be. Weird. I just drove mine again to see if I could get it to do what your datalog showed. Nope. Mine doesn't do it.

As far as your shift solenoid "issue" goes, there are two shift solenoids in the transmission that control the 4 gears. They work like a logic table. For example:

1 off, 2 off = 4th
1 off, 2 on = 3rd
1 on, 2 off = 1st
1 on, 2 on = 2nd

This goes along with what your AE showed you....SS2 "0" (off) in 4th and "1" (on) in 3rd.

If this parameter is changing when your TC is acting up, then you have a correlation issue between 3-4 and 4-3 shift points.

That's a neat software package you have there, DJ.

EDIT:
I see that the SS2 value changed at frame 143-ish. The TC was acting up before that..... Hmmm.
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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