Rote8

When you turn on the key, then press the brake twenty times, in very fast presses, what gets reset when the oil gauge goes to the middle and back down?

I have been told this resets the fuel injection timing/crank position sensor, is this true?

Why would I need to do this for better idle?

Why does my long term trims raise by 3 when I do this?

Jedi54

iTrader: (7)

I'm pretty sure the fuel trims get reset so that's why LTFT is off by 3.

here's more details on clearing it: https://www.rx8club.com/showpost.php...32&postcount=3

Rote8

No, I have tested the "Press the Odometer button" reset, it does not reset the Long Term Trims, at least from the Data logs showing LTTs.

Jon316G

iTrader: (1)

The procedure that MM mentioned with holding the odometer is incorrect.
This will not reset anything... that menu is used to test inputs/outputs.
I talk about that in this thread:
https://www.rx8club.com/series-i-do-yourself-forum-73/diy-diagnostic-outputs-155947/

I suggest reading this for the accurate way to clear the PCM and to understand what you're clearing:
https://www.rx8club.com/series-i-trouble-shooting-95/real-way-clear-memory-169443/

Jedi54

iTrader: (7)

damn it, I gotta stop quoting such old posts.

thanks for the correction Jon.

04RX8man

^wow jedi got corrected that's a first! haha

I8U

iTrader: (1)

I was told pulling the room fuse will reset both the LTFT and the STFT...and that it will take a few drive cycles for the PCM to relearn the trim settings.

rodjonathan

iTrader: (6)

are any of these necessary or does the ecu learn these over time anyway

nycgps

iTrader: (1)

ECU will re-learn over time.

swoope

iTrader: (5)

all the rules changed with the r flash..

beers

04RX8man

^+1.

swoope

iTrader: (5)

fuel trims dont clear with the brake tap, they did before the r flash...

battery pull or fuse pull.

beers

Razz1

Man... I love dat beer cup holder.

Wat da Man said room fuse..