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Ign adv
Posted: Sat Feb 19, 2011 12:42 am
by ijreed
i have a scanner and it has something on it called ign adv i was just wondering what this is.
Re: Ign adv
Posted: Sat Feb 19, 2011 10:41 am
by willwren
The PCM advances the ignition timing as much as it can based on the conditions (fuel octane, temperature, knock, etc) to improve power and efficiency. If it detects knock, it will retard the timing.
Re: Ign adv
Posted: Sat Feb 19, 2011 1:02 pm
by ijreed
so what are the numbers typically supposed to range from, and what are they supposed to be at WOT. At WOT its goes to 14 is that bad and in normal driving operations its about from 27 to 34
Re: Ign adv
Posted: Sat Feb 19, 2011 1:09 pm
by myfirstbonnie
It is going to vary based on a lot of factors. Some of which Bill mentioned along with things like load on the car, flat or steep hill quality of the gas etc.
Re: Ign adv
Posted: Sat Feb 19, 2011 6:39 pm
by ijreed
so is there number where KR occur if so what numbers
Re: Ign adv
Posted: Sat Feb 19, 2011 6:49 pm
by bonnevillain
That will also depend on the car, the temperature, and the gas being used. KR is a separate parameter which some scanners can read.
Re: Ign adv
Posted: Sun Feb 20, 2011 12:06 am
by ijreed
so where can i find one of thos scanners and thanks for the info
Re: Ign adv
Posted: Sun Feb 20, 2011 10:20 am
by LeSabre in Buffalo
My L36 advances timing to 44* on occasion. It's kinda funny to watch.
Re: Ign adv
Posted: Sun Feb 20, 2011 10:54 am
by willwren
ijreed wrote:so where can i find one of thos scanners and thanks for the info
Auto Parts stores, online, Sears, etc.