Originally posted by 337:
After driving the car several days/ hundreds of miles, I had the computer scanned.
There are no codes, but the sensor is not getting a reading from the 4 following sensors...
1)O2S (Both 02 sensors plugged in and connections good, no frayed or cut wires)
2)CAT (If this is the catalytic converter, I had no idea it had a sensor other than the o2's)
3)HTR (I'm assuming is the heater, but is working fine)
4)EVAP
So here are my following questions...
1) If there's a bad o2 sensor, wouldn't it set a code instead of the sensor not being picked up?
2) Could the bucking under deceleration be a symptom of a clogged catalytic converter, if not what are the symptoms of one?
Answer yes to both your questions. If the converter is clogged, chances are you will also get a P0420 code. You may want to do the el cheapo plugged exhaust test for the Zetec. Unplug upper O2 sensor. If performance improves, then it is probably a plugged exhaust.
Your 4 non readings are either due to the OBD II cycle not completed or some the monitors not being applicable to the Contour. I will check tomorrow after driving my car and post.
"Always do the cheap and easy ones first."
1996 V6 ATX 96K miles
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