Well, My car shoots white smoke, and I just had me engine rebuilt with new seals and head gasket and new bearings and all the little goodies. I jsut got myself a new TPS sensor today, and installed it. The only codes flashing now are the IACV and the O2. I will get a new IACV later. But my question is, can a head gasket go bad that quickly. I had it all done about a year ago. It doesn't go through coolant like mad crazy. But when I smell the exhasut it is like a sweet nasty smell, it like burns my nostrels(haha). But it is def white smoke. I don't know if it is my head gasket or am I running lean? I am going to get my car tuned within the next 3 months. I have a VAFC 2, so it will give me a little more flexibility in tuning. But I just don't known what the smoke is from. My mechanic said it might be my piston rings. But IDK what the hell it is.