Every day when I start my car, it sounds as if it's starving for air or fuel. When I first start it, the rpm reads 800 and bogs down to 500rpm, but once it is warmed up, the tach goes up to 800rpm again. If I step on the gas as i am warming it up, it bogs a little, also. After Ive driven it a few block, it's fine. Sometimes when I'm at a light and start to take off, it feels as if it is loosing power. But once I hit 2nd, it's fine! Everything cas been completely rebuilt/replaced, from new sensors to engine. Anyone have any idea what the problem is? NO smart asses telling me to RTFM! Ok? that's irritating! THANKS GUYS!!! Any help is appreciated!