The Saga contiunes

[Rolla]

Well yesterday after changing the oil, Spark plugs and air filter. I decided to see if it might be the O2 sensors that were leading to my misfire. so I took the before cat O2 and switched it with the after cat O2 which on a 99 are the same kind. And the stopped the misfires on 1-3 cylinders but now 4-6 has the same error codes :eek: so I decided to call it a night :cheers: and come back to it later. I have a small questions cylinders 1-3 are on the drivers side of the car right? Just to make sure that I am not losing my mind. TIA

[Rolla]

well the problem is still there. I am either going to replace all 4 O2's or take it to the dealer for them to take a look at it. Either that or maybe I will sell it.

[jporter]

I have a 98 and had a similar problem that was related to an O2 sensor. The code reader I used (CarChip E/X) picked up the O2 sensor problem as well as the misfires. These are shown below.

P0140 O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 2)

P0300 Random/Multiple Cylinder Misfire Detected

P0301 Cylinder 1 Misfire Detected

P0302 Cylinder 2 Misfire Detected

P0303 Cylinder 3 Misfire Detected

“Bank 1" is on the passenger side of the car and "Sensor 2" is the one located downstream of the catalytic converter. Replacing the sensor solved the problem.

Edited November 19, 2004 by jporter