Rough Idle and I am stumped??
I am have very rough idle issues on my 02 Taurus 3.0 U motor. Car bounces at very low RPM until it dies, but seems to run fine while driving. I had codes pulled at AutoZone and it showed lean on bank 1 and 2. Misfire on 2, O2 sensors and MAFS. I have since replaces plugs, wires, MAFS, coil and had recently replaced the fuel filter and IAC. Im not sure what else could possible cause this problem. Would a bad O2 cause the car to idle horrible but run fine? It is dumping fuel into the oil like no tomorrow and I have noticed a milky substance inside the the tube connecting the air filter to the throttle body. I would appreciate any assistance.