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Re: Help with 4L80E
Posted: Sun Apr 24, 2016 1:42 am
by flak monkey
I think I have figured this out, well half of it....
It was shifting late because it was still using map as load even though I had changed the project properties to TPS.
I've reloaded code again, created another new MSQ and it seems to be shifting as per the map now.
Only thing is I still don't have 1st gear except in manual 1 lever position.
My line pressures are:
120psi in park and neutral
280psi in reverse
175psi in all other lever positions (d-1)
Re: Help with 4L80E
Posted: Sun Apr 24, 2016 9:49 am
by flak monkey
Log attached, shifting much better, but still missing first gear...
Re: Help with 4L80E
Posted: Sun Apr 24, 2016 11:02 am
by gui67
HEllo,
it is the msq, not the log.
for your load problem, check what the MAP vs TPS for load (MAP%) in the Throttle and Load Factors menu.
I put it on 100% MAP now, but before I did not understand why I could see a small load with 200kPa MAP... it was blended with TPS.
Maybe you have to adjust it to 0% MAP (100% TPS) if you want it like that. you have 25% for the moment in the attached msq.
Re: Help with 4L80E
Posted: Sun Apr 24, 2016 11:11 am
by flak monkey
Oops. Here's the log.
I'll see how the load goes with it on KPa.
Re: Help with 4L80E
Posted: Sun Apr 24, 2016 11:46 am
by gui67
The controller seems to select the right outputs for the 1-2 shifts. but the transmission does not follow.
I would try to manually ground the output 1 going to solenoid A to check if it changes something. or check with a multimeter if the output is grounded at this moment.
Did you check the shifter setting? maybe it is not set properly and the manual valve is not on the right position with the shifter in D.
Re: Help with 4L80E
Posted: Sat Apr 30, 2016 2:27 am
by flak monkey
Driven the car on the road today and 1st gear is working fine now - expect it was something mechanical - could have been as simple as one of the checkballs was still stuck in the vaseline or something. I don't know but it's working now...
However I have some tuning issues now that I need some help with
I'll start a new thread
Re: Help with 4L80E
Posted: Sat Apr 30, 2016 10:37 pm
by gui67
The tests before were done with the wheels of the ground?
If yes, it was maybe friction between the discs or the band that made the wheel turn like in second gear: not enough torque to keep the wheel from turning.
If you try again with the wheels up, I think you will see the same behaviour as before.