Idle relearn procedure what does it do?

[Richf]

 

Had an issue where the rpm was hanging at 1500-1600 when coming to a stop and that idle was around 1100rpm .

 

So did the throttle pedal reset, throttle valve reset and then the idle relearn , all worked great idle now is 750rpm or so .

 

But

 

The car drives much differently , feels like some ignition timing has been added , the car picks up easier and seems to rev cleaner

 

Really wasn't expecting this so feels like a full ecu reset but is that what happened ?

[Dblock]

Possibly it relearns more than just the idle air thing. Might adjust a few other things. When I first joined. People used to disconnect their battery and then connect them the next day for a little more oomph.

[KyleR]

The ecu learns how the car is driven and adjusts accordingly, performing this reset sets it back to day one and it's now learning how you drive.

[Tricky-Ricky]

I am pretty sure that idle relearn also clears short term fuel and timing trim, so you will notice a difference if you have been doing say commuting for the last few days, or running lower octane fuel, the ECU will adjust the trims to suite how you drive, so clearing them will often be noticed.

[Arran]

Might be worth while doing that before a track day then lol

[Richf]

So what we are saying is that this proceedure does a full ECU reset not just the throttle bodies, air flow and pedal trims ?

 

Thats certainly what it feels like