shift error times?
Thread Starter
Teching In
Joined: Jun 2014
Posts: 38
Likes: 0
shift error times? Rebuilt my 4l60e. Finally have it back in and running after a few hiccups.
I have a snap modis, I looked at the shift error times and honestly don't understand them. The way it reads is
1-2 shift .05
1-2 error .33
2-3 shift .08
2-3 error .33
3-4 shift .06
3-4 error .15
What the heck does that mean and is it important? I was just gonna reclutch this unit but found broken springs, valve body valves all damaged ( changed with a rebuilt unit), cracked accumulator piston, etc so I being a novice checked it 4 times before closing each section. I've gone thru this section since October to prepare for the rebuild, you trans guys on here make it sound so easy! Seriously tho I also went thru alot of stuff with a local guy, what to look out for, tricks he's learned after 30 years.
Also I don't think I had converter lockup on the test drive, may have used the wrong o ring tho. Had that happen before.
I have a snap modis, I looked at the shift error times and honestly don't understand them. The way it reads is
1-2 shift .05
1-2 error .33
2-3 shift .08
2-3 error .33
3-4 shift .06
3-4 error .15
What the heck does that mean and is it important? I was just gonna reclutch this unit but found broken springs, valve body valves all damaged ( changed with a rebuilt unit), cracked accumulator piston, etc so I being a novice checked it 4 times before closing each section. I've gone thru this section since October to prepare for the rebuild, you trans guys on here make it sound so easy! Seriously tho I also went thru alot of stuff with a local guy, what to look out for, tricks he's learned after 30 years.
Also I don't think I had converter lockup on the test drive, may have used the wrong o ring tho. Had that happen before.
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
1-2 shift error .33 means the shift time was too quick by 0.33 s
i.e. in your calibration the desired 1-2 shift time would be 0.38 s.
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
shift error times? You want the shifts to be as fast as possible.
You also want shift adaption to not slow down the shifts (set pressure change tables to non-negative values)... keep an eye on the shift times for the next few hundred miles, make sure they do not get longer.
You also want shift adaption to not slow down the shifts (set pressure change tables to non-negative values)... keep an eye on the shift times for the next few hundred miles, make sure they do not get longer.
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