Assistance Needed. pp C2

[Blue911]

Assistance Needed - CEL After Spark Plug Change 1999 C2 (standard)

I changed my plugs and tubes 2 days ago, and the car has been running great. This morning, about 20 min into my drive I went to pass and the car sputtered a bit, and the CEL came on. Checked out the codes, P0134 which is the 02 sensor, and P0302 (cylinder #2 misfire). I checked all of the connections and they seemed to be okay. To trouble shoot, I took the #2 cylinder coil and moved it to #1. Took it for a test drive and had the same problem, sputtering when I get on it. Checked the codes again, and the same codes were noted. I then changed #2 spark plug, and the same problem. Would a bad o2 sensor have the symptoms of sputtering?

My questions are :

1. Would a loose connection to the coil pack cause this (P0302 code)?

2. If the o2 sensor is bad would my symptoms be; sputtering when I get on it?

3. If the problem didn't follow the coilpack, would it be that I have a bad plug in #2?

4. Would the o2 going bad cause a fault with cyclinder #2, and or vise versa?

Any help would be appreciated!!! Thank you!

[Loren]

1. Yes.

2. Not usually - the O2 sensor is after the fact.

3. Possibly yes. It could be cracked or just bad. Swap it with another cylinder and see if the fault follows (check for cracks first).

4. No, I don't think so. Again, O2 is after the spark plugs.

[Blue911]

Thank you Loren for the quick reply! I'll be checking the code again tomorrow.