over a period of a couple months now, everytime i start my car it seems to get worse, but it turns over a couple more times than it even used to, and the idle surges to about 15-1600 roms and hangs there for about 5 seconds then falls to about 1000, im only questioning what goes on because my car only used to jump to about 1300 rpms for less than a second, fall to about 1050 roms, then in a matter of a few seconds, it would fall right back down to a normal cold idle for me(about 800ish roms) the normal hot idle would be around 650 rpms, and now it only idles at about 800 rpms. could a dirty maf be the cause? and could my maf even be dirty ADAIN??!! its only bee a few months since i last cleaned it) im not seriously worried, it is just getting to be a higher and higher rpm as time goes by, so im just trying to get some ideas