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Idle relearn vy ecotec 3.8

yz300

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Hi everyone, as the title implies I'm wondering what the idle relearn procedure is for a 3.8 litre VY. Can anyone advise? Thanks in advance, Gus
 

immortality

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Fairly sure there is no set procedure as the IAC stepper resets itself on every start.

If you want to do a full reset, disconnect the battery for 1/2 and hour or so.
 

yz300

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Thanks immortality, can you explain what a full reset would do? Are there any special things i need to do after a full reset like running with a/c on then off or reving to 3k after startup etc. Thanks Gus.
 

immortality

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The PCM forgets all it's learnt information like fuel trims.

The idle reset only really applied to the earlier VN-VR V6 motors.
 
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