Idle spark and hunting issues

General Tuning Questions And Discussions
Post Reply
0081(2)
Posts: 149
Joined: Wed Oct 31, 2012 6:59 pm
cars: VY commodore supercharged V6
Location: Sydney

Idle spark and hunting issues

Post by 0081(2) »

Hey all

I have a idle issue currently with my car after installing a hybrid A2A W2A system into my L67 commodore.

The idle is pretty good when i start it and the motor is cold then once it gets to around the 35 degree mark it starts to get a bit out of control the RPM starts to move around quite a bit and the spark starts to move all over the place.
I thinking its temp based as it i turn the car off and restart it the idle is not stable.

I think if the spark was not dropping so much it would help out as when i started tuning the car (pre cooler install) the idle was very poor until i bumped the idle spark up which made it nearly spot on.

I have attached a log of starting the car when cold and let idle until the issue starts.
Im using a VY flash PCM with The1's enhanced code.

Edit, changed the topic title to better describe what the issue was,
Last edited by 0081(2) on Sat Jul 25, 2015 6:01 pm, edited 3 times in total.
immortality
Posts: 3676
Joined: Thu Apr 09, 2009 12:31 pm
cars: VH, VN, VS, VX

Re: Idle spark

Post by immortality »

35° C is about where the engine goes from open to closed loop from a cold start if I'm not mistaken.
0081(2)
Posts: 149
Joined: Wed Oct 31, 2012 6:59 pm
cars: VY commodore supercharged V6
Location: Sydney

Re: Idle spark

Post by 0081(2) »

Thanks for the input immortalitly, i went and checked that out but it was not the cause.

I went back through my earlier logs and noticed it was never happening so it must have been a change i had made to the bin as i rolled back to a earlier bin and it was back to normal.
Post Reply