2010 - Idle relearn- only for gas?
('09-'13)
1 - 5 of 5 Posts
@stallard it's not going to hurt anything to try... just some of your time. If it doesn't work, then you can rule that out & move on with the troubleshooting.
www.subaruforester.org
Bobby...
['07 FSXT Member Journal] ['03 X Member Journal]
(All Years) - How to Idle Re-Learn after Battery Disconnect
Posting here as this seems to affect some Forester and Imprezza models with Electronic Throttle Bodies or IACV that undergo a battery disconnect, and lose their idle calibration. As per these links to retrain the ECU idle parameters: https://forums.nasioc.com/forums/showthread.php?t=2382568...
www.subaruforester.org
['07 FSXT Member Journal] ['03 X Member Journal]
Hi,
Of course you can try, but I doubt it will make any changes.
ECU controls idle speed by injected fuel ammount there are no idle control valves or idle circuits like on gasoline cars.
Maybe try describing what your idle is like? constant (fast) shaking, random jerks, surging (low rpms like it is about to die)?
are there any changes in behaviur with ac on or off, what happens when you start to drive (when clutch is engaging) does it smoothen out or gets worse? do you have any vibration on acceleration? does the shaking get worse when you raise rpms standing in neutural?
Try looking Cylinder quantity correction value on all 4 cylinders if you have torque pro app.
@DieselForry I'm pretty sure it's the alternator pulley.
Have you gone through the ‘rough idle’ check list? (attached below).
The ‘over-running alternator pulley’, is more likely to make your belt tensioner bounce around more than it should, or make the tensioner appear to be worn.
If the rough idle is very pronounced, I would suspect something other, or in addition to a worn alternator pulley.
I have had the Dealer refer to an injector relearn on the Diesel. ECU can be set to compulsory relearn mode, via scantool.
Will do injectors, fuel pump, and EGR valve.
What angle does your ECU say the EGR valve is at, whilst on idle? What angle is it at on cold start?
The ‘over-running alternator pulley’, is more likely to make your belt tensioner bounce around more than it should, or make the tensioner appear to be worn.
If the rough idle is very pronounced, I would suspect something other, or in addition to a worn alternator pulley.
I have had the Dealer refer to an injector relearn on the Diesel. ECU can be set to compulsory relearn mode, via scantool.
Will do injectors, fuel pump, and EGR valve.
What angle does your ECU say the EGR valve is at, whilst on idle? What angle is it at on cold start?
Attachments
1 - 5 of 5 Posts
Join the discussion
Join now to ask and comment!