How to service and repair the Oxygen Sensor (HO2S 1 W/o PUP Catalytic Conv) on Chevrolet Metro?

Begin service or repair of the Oxygen Sensor (HO2S 1 W/o PUP Catalytic Conv) when the engine temperature falls below 48°c (120°F) because high temperatures create difficulties in removal as well as thread damage to the Exhaust Manifold. Begin the service by disconnecting both the negative Battery Cable then removing the electrical connector which serves the heated Oxygen Sensor (HO2S) 1. Take the ho2s 1 sensor out from the Exhaust Manifold position. The threads of new ho2s 1 have an anti-seize coating which must stay intact during installation; if repairing an original sensor the threads should receive an anti-seize application. Fasten the ho2s 1 in the Exhaust Manifold and use torque between 40-50 n.m (29-36 lb ft). The last step requires you to connect the ho2s 1 electrical connector and negative Battery Cable.

OEM Chevrolet Metro Oxygen Sensor

Oxygen O2 Sensor

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Chevrolet Metro Oxygen Sensor Part Number: 91177409
Product Specifications
- Other Name: Sensor, Oxygen (On Esn); Sensor, Computer Control Sensors
- Replaces: 96068439
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1998-2001 Chevrolet Metro | Base, LSi | 3 Cyl 1.0 L GAS, 4 Cyl 1.3 L GAS
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Chevrolet Metro Oxygen Sensor Part Number: 91177411
Product Specifications
- Other Name: Sensor, Oxygen (On Esn); Sensor, Computer Control Sensors
- Replaces: 30017465
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1998-2001 Chevrolet Metro | Base, LSi | 3 Cyl 1.0 L GAS, 4 Cyl 1.3 L GAS

Chevrolet Metro Oxygen Sensor

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The Oxygen Sensor found in Chevrolet Metro cars is important in determining the amount of the oxygen that remains unburned in the exhaust so as to regulate the air-fuel mixture mix proportion and hence reduce emissions. The voltage signal hence produced by the sensor is fed back to the engine control computer so as to allow it to manipulate the pulse width of the fuel injector to create efficient combustion. Chevrolet Metro car models mostly install zirconium dioxide types of oxygen sensors and these may be the Narrow and the Wide Bands. The narrow-band sensors produce voltage signal that swings between rich and lean conditions, whereas wide-band sensors provide greater measurement range for more accurate air fuel ratio management. Thus, these sensors are subject to contamination over a period of use, and then the emissions increase and fuel efficiency decreases. Chevrolet Metro vehicle requires constant checkups and maintenance of the Oxygen Sensor for it to perform efficiently at all times.

Chevrolet Metro Oxygen Sensor Parts and Q&A

Oxygen Sensor
91177409
Q: How to service and repair the Oxygen Sensor (HO2S 1 W/o PUP Catalytic Conv) on Chevrolet Metro?
A:
Begin service or repair of the Oxygen Sensor (HO2S 1 W/o PUP Catalytic Conv) when the engine temperature falls below 48°c (120°F) because high temperatures create difficulties in removal as well as thread damage to the Exhaust Manifold. Begin the service by disconnecting both the negative Battery Cable then removing the electrical connector which serves the heated Oxygen Sensor (HO2S) 1. Take the ho2s 1 sensor out from the Exhaust Manifold position. The threads of new ho2s 1 have an anti-seize coating which must stay intact during installation; if repairing an original sensor the threads should receive an anti-seize application. Fasten the ho2s 1 in the Exhaust Manifold and use torque between 40-50 n.m (29-36 lb ft). The last step requires you to connect the ho2s 1 electrical connector and negative Battery Cable.