Fuel System Problems?

[e30fr3@k]

Okay, I'm scheduled to go into the garage on tuesday, but before I replace the O2, i wanna make sure it's a good decision. Could a bad O2 cause problems starting the car? Because that's my biggest concern right now. The idle is quite bad too, however. The cyl 1,3,5 error code is kind of worrying me too. Wonder if I have a bad injector or plug. let me know what you guys think. thanks

 

[e30fr3@k]

injectors?

Okay, so I ran a test on my engine by pulling spark plug wires systematically. I found the smallest difference when I pulled the 5th cyl wire, which tells me that it's probably 5 (I also know that the diagnostics computer read 1,3,5 for error codes, so it seems pretty likely to me that it is one of them. I was wondering if anyone knew how to test for misfiring fuel injectors. My mechanic was telling me about a diagnostics procedure but he didn't give me any details. I'm gonna search the archives here, but if you know the procedure, please let me know. (someone stole my freakin bentley)