I have a 2006 S2K and I've been in love with her ever since I've picked her out of the lot on that great April Day back in 2006. My car has never given me any problems she's been good to me and I've been good to her, she's got 68K miles not so bad after all this time. Anyways on thursday of last week I noticed that I was having some problems when it came to start the car, after the car started it was cool. I did a little bit of research and found that it could be time for a new battery. So I took out my battery and took it ot Autozone, once there I had them test the battery and as expected they told me the battery was not good any more. So I went ahead and bought a new one with an 8 year warranty. I installed the battery and success there was no more problems when it came to starting up my car. When I drove for a bit I had no issues everything was back to normal, As soon as I turn the AC on I notice that when I would come to full stops at a light or stop sign the car will idle way below 1000 rpms to the point that it was almost at 500-600. Once on idle it feels like it's about to stall but then it doesn't. If I turn the AC off everything is back to normal, even if my fan kicks in I see no difference in rpm drops, I only noticed the problem if my AC is on. Before the battery change when I would turn on my AC the RPM would drop a little but there was no issue when it came to coming close to stalling while on idle. I need help has any other people experience this and if so what was the problem, I mean do I need another battery of is the problem deeper than that. With my other battery this was not an issue but even when the battery was bad the problem was the starting of the ignition not the low RPM even with the AC on. PLEASE HELP!!!!

 

its normal and you might wana clean your air filter

 

When u say it's normal do u mean that it will get back to it's original state of norman idle after a few days?

 

my 2000 did this too after i picked it up. what you want to do is not give it gas as the rpms drop really low, leave it be and it will correct itself. the ECU is learning where it needs to be, mine is fine now fyi.

 

Thx a lot fellow S2Kers lol good looking out

 

same here. ecu will learn and problem will be gone soon

 

My idle is back to normal, thanks guys for all your help and info.