The first sensor on the drivers side exhaust pipe.
It is behind the catalytic converter
passenger side first sensor before cat
the bank 1 oxygen sensor on a 97 Chevy is going to be either on the left side manifold or in the y-pipe before the catalytic converter it depends on if it is federal or California emmissions
Trouble code P0144 means:O2 sensor circuit high voltage(Bank 1 Sensor 3)
location of 3 sensor of 97 Chevy astro van?
No you can not. It MUST have it to run.
That would be the sensor after the catalytic converter.
This means that the Oxygen sensor #1 on bank one went lean and stayed lean for longer than allowed.Look for in this order:Cylinders miss-firingVacuum leaksExhaust manifold leaksFaulty sensor.
Bank 1 is the bank that sits closest to the front of the vehicle. Bank one is the bank with cylinder # 1. You have 4 oxygen sensors, (bank 1 sensor 1, bank 1 sensor 2, bank 2 sensor 1 and bank 2 sensor2). Follow the exhaust from the head of bank 1. The first sensor you come to is sensor 1, the second is sensor 2.
2.2l is behind cat converter
97 x 71 = 6,887
O2 sensor circuit bank 1 sensor 2 no activity. Check the wiring and connections to bank 1 sensor 2 O2 sensor, if all looks good replace the sensor.