My transmission is having learning difficulties

[Skapper]

Disconnected the battery today. Since then the tranny has been slooooow on shifts - particularly 2nd to 3rd. Doesn't do it in tippy mode... though, in starting think it is. Paranoia maybe.

But the shift 2nd to 3rd in normal mode is very slippy. Wasn't like this yesterday and I haven't done anything to it between then and now aside from disconnect the battery. The drive battery disconnect wasn't very long and it was granddad mode (slow)... shouldn't my tranny have figured things out by now?

[KWAWD]

What was the outcome of this? I assume it eventually sorted itself?

[Skapper]

What was the outcome of this? I assume it eventually sorted itself?

I'm sure I replied to this?

Anyway, it's sorted. I proper transmission relearn was done and a days or so after the transmission is 100%.

I guess what threw me off was the fact I've never done a trans relearn on any of the three magnas I'd owned. The transmissions just seemed to work after the battery was disconnected.

This car has had the battery disconnected previously also, and it's just worked before? Odd I guess.

[ammerty]

I've always been curious, is the relearn procedure for the 4-speed, 5-speed, AWD & FWD all the same?

[Skapper]

I've always been curious, is the relearn procedure for the 4-speed, 5-speed, AWD & FWD all the same?

I just used the relearn procedure I found on the forums here. It worked.

Gimme a sec, I'll post it here....

[Skapper]

I've always been curious, is the relearn procedure for the 4-speed, 5-speed, AWD & FWD all the same?

Relearn procedure I used;

[ammerty]

Yeah, thats the one I used today when I replaced my battery, good to know it works on 5 coggers as well

[KWAWD]

I found it a little counter-intuitive tho. The instruction "accelerate with constant throttle to cause a 2-3 upshift on a level road at the vehicle speed on the chart"
Well first off it takes a long stretch of road with no traffic but secondly my transmission has usually shifted to 4th or even 5th by then. I assume its ok even though the instruction states 2-3.

[MadMax]

I found it a little counter-intuitive tho. The instruction "accelerate with constant throttle to cause a 2-3 upshift on a level road at the vehicle speed on the chart"
Well first off it takes a long stretch of road with no traffic but secondly my transmission has usually shifted to 4th or even 5th by then. I assume its ok even though the instruction states 2-3.

More throttle needed!
2 to 3 upshift can be anywhere from 40 kph to 100 kph and up if you use the right foot a bit more.

[WytWun]

More throttle needed!
2 to 3 upshift can be anywhere from 40 kph to 100 kph and up if you use the right foot a bit more.

The above instructions were written for the 4 speed boxes, and based on my understanding of the shift maps from a 3.5l 4 speed ROM you would want about 50% throttle (TPS sensor value).

I would expect that if the procedure is implemented for the 5 speed boxes that a similar throttle setting would be used, rather than speed, because to get a 2-3 shift at that speed in a 5 speed requires WOT...
50% throttle in a 5 speed would give a 2-3 shift speed of about 35-40kmh.

I would also note that the procedure is quite specific about fluid temperature and without a convenient way to check that it's anyone's guess whether the result is as intended by the author(s) of that document.