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#1
July 21st 05, 02:00 AM
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P0320 codes
I have 96 chev truck 305 CI with 228,000 miles on it. trouble code comes up
with catalyist efficiency below threshold bank 1. It has 4 02 sensors and 1 catalytic converter. I clear the codes and it runs fine for a couple of days up to a couple of weeks. Cant figure out if 02 sensors or converter is bad. 
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