Greetings folks,
I'm using s_aujpv4, and I my normal idle is pretty much stable. What's odd is that when I turn on the aircon, the idle starts oscillating...about 300-400 rpm...any ideas?

 

try richening up the idle a little.

 

...when the a/c is turned on. I was hoping someone would know why it would start hunting just because the a/c came on.
Could there some sort of oddball occurrance developing as the 12.5 rpm are added? Such that the rpm would start hunting?
I'm reluctant to just making it richer at idle because it idles quite well without the a/c on.

 

Does the MAP increase with the A/C on? Likely it does and that is the area that needs a little more fuel.

 

MAP at those points, a/c on vs. a/c off, and see what's happening.
Thanks all...