on my car when i first start it cold it wont idle on its own. also when it does it idles REALLY low smooth but low. its 2000 ex coupe with the stock y8. also if barley give it any gas up to around 1500 rpms it wont stay steady it bounces from like 1500-1600 rpms, it almost sounds like a 2-step set at 1500 for some stupid reason. any info anyone?