2004 ford Taurus SE 3.0 misfire problems?
My parents have a 2004 ford Taurus SE. 3.0 when you start it up in the morning it'll misfire like something fierce. After the idle drops. The car seems to run better. But while driving it it'll misfire at random. When going up a hill, or when you hit the gas hard, today 3/19/18 i drove it punched it down ran fine. I slowed the car down to 45 then after about a mile it started to misfire and smelt exhaust and gas fumes. I'm stuck i don't know what to do i changed the T.P.S. The ignition coil. The spark plugs. After i changed all of that i busted all of the insides out of the cat. Runs A LOT BETTER but still has that miss fire. And i'm not sure why below are a list of the codes that are on the car there 8 codes
p0174 too lean bank 2. (what is bank 2)
p0302 cylinder 2 misfire detected
p0303 cylinder 3 misfire detected.
p0316 engine misfire detected on stat up (first 1000) revolutions.
p0353 ignition coil C primary secondary circuit.
p0420 catalyst system efficiency below threshold bank 1 (what is bank one)
p0171 system to lean on bank 1.
p0300 random/multiple cylinder misfire detected