Codes question

[propr`one]

I've been working on getting the kinks out of the 328 i bought a couple months ago, i've had it scanned several times, fixed a couple codes but these ones reoccur
F6- secondary air system flow too low, cyl 4-6
F5- secondary air system flow too low, cyl 1-3
E6- pre-cat oxygen sensor response time, cyl 4-6
02- ignition coil, cyl 4 (see below)

Any ideas?

The pre-cat oxygen sensor response time, people suggested air pump failure, but i checked and its working fine. Could it be the sensor itself? anyone know part#?

o2 sensor just needs to be replaced, its obviously the one before the cats, anyone which of the two it is or a part #?

and the first two codes, secondary air system too low im completly in the dark about. any ideas would be appreciated. Car seems to drive fine, but these CODES:eyecrazy

[propr`one]

buuuuuuump

[mcoupemindy]

F6- secondary air system flow too low, cyl 4-6
F5- secondary air system flow too low, cyl 1-3
E6- pre-cat oxygen sensor response time, cyl 4-6
02- ignition coil, cyl 4 (see below)

Here you go.

F5 and F6 are caused by a bad secondary air system. It basically pumps air into your cats to allow them to heat up faster and produce less emmissions. It is most likely a failed secondary air pump. In the engine compartment, it is in the engine bay, on the passengers side, up by the firewall. It round, about 8" in diameter, and expensive to replace. Also, if you follow the airline to the exhaust manifold, there is a valve there that commonly fails too.

E6 suggests that you should replace your oxygen sensors. This could also be causing the F5 and F6 codes. I would replace all the O2 sensors at one time.

Don't worry about the 02 code. It could just be a fluke. I wouldn't worry about it.

My suggestion, change the oxygen sensors first and troubleshoot the rest after.