The car's idle was very jumpy, 500 rpms,. 750-1000 rpms around that area, after about 2 min or so idling, it finally seddled back down to 750-800 steady. What caused this? I just did a full EGR clean, tune up, etc and it was smooth till then, then it did that and then went smooth again. I do need to adjust my idle again, it seems to go under 750 now.....grrrr..