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Repeat failure of o2 sensor
o2 sensor only lasts about 3k-4 [...] ever I change the oil, I check out scanner data-o2 senser stuck at 450 volts [bias?].No codes [...] trims out of normal range-does not like to be in closed loop,etc. When I remove the sensor,it rattles like the porcelin is... Login to read more. 
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15 Replies Received
15 Replies Received
| Engine | 4.3 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
1991 Chevrolet Astro 4.3L
| Engine | 4.3 L |
| Trans | 4-speed Automatic (Electronic) |
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