How to test and replace an oxygen sensor?

The oxygen sensor is a device that produces a voltage when exposed to oxygen in the exhaust gases. It is in the exhaust system and can be heated internally for faster reaction. The sensor produces a voltage between zero and one volt, with a low voltage indicating a lean mixture and a high voltage indicating a rich mixture. The stoichiometric air to fuel ratio causes the voltage to fluctuate.

Genuine Cadillac Eldorado Oxygen Sensor

Oxygen O2 Sensor

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7 Oxygen Sensors found

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Cadillac Eldorado Sensor Asm,Heated Oxygen
Part Number: 19178958
$60.51 MSRP: $125.66
You Save: $65.15 (52%)
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Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Front Oxygen Sensor, Manifold, Oxygen Sensor
- Replaces: 25312203, 25178022, 25164488, 25312211
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1998 Cadillac Eldorado | ELDORADO | 8 Cyl 4.6L
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Cadillac Eldorado Sensor,Heated Oxygen
Part Number: 12559850
$37.12 MSRP: $119.40
You Save: $82.28 (69%)
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Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Front Oxygen Sensor, Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2002 Cadillac Eldorado | ELDORADO | 8 Cyl 4.6L
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Cadillac Eldorado Sensor Asm,Oxygen
Part Number: 19211435
$51.22 MSRP: $164.76
You Save: $113.54 (69%)
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Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Oxygen Sensor
- Replaces: 25165116, 19178746, 19178940, 25106169, 25165119, 5613719, 05613719
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-1993 Cadillac Eldorado | COMMERCIAL CHASSIS, ELDORADO | 8 Cyl 4.1L, 8 Cyl 4.5L, 8 Cyl 4.9L
- 1982-1985 Cadillac Eldorado | BIARRITZ, COMMERCIAL CHASSIS, ELDORADO | 8 Cyl 4.1L
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Cadillac Eldorado Sensor Asm,Heated Oxygen
Part Number: 19178939
$47.12 MSRP: $136.80
You Save: $89.68 (66%)
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Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Oxygen Sensor
- Replaces: 25132086, 25165311, 25312178
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1995 Cadillac Eldorado | ELDORADO | 8 Cyl 4.6L
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Cadillac Eldorado Sensor Asm,Heated Oxygen<Do Not Use, Contact Tech Specialist
Part Number: 19355308
$62.98 MSRP: $130.76
You Save: $67.78 (52%)
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Product Specifications
- Other Name: SENSOR ASM,HTD OXY
- Replaces: 19178928, 25161131, 25312197
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1997 Cadillac Eldorado | ELDORADO | 8 Cyl 4.6L
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Cadillac Eldorado Sensor,Exhaust Oxygen
Part Number: 19211437
$15.80 MSRP: $33.26
You Save: $17.46 (53%)
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Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Oxygen Sensor
- Replaces: 19178952, 25162600, 25106073, 25132068, 25166816, 25171574, 25107378, 25162693, 25165118, 25171581, 25165120, 25171573, 19178943, 19178953, 19178919, 25162753, 25133185, 25133076
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1986 Cadillac Eldorado | BIARRITZ, COMMERCIAL CHASSIS, ELDORADO | 6 Cyl 4.1L, 8 Cyl 4.1L
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Cadillac Eldorado Sensor Asm,Heated Oxygen
Part Number: 19178945
Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Oxygen Sensor
- Replaces: 25315373
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1999 Cadillac Eldorado | ELDORADO | 8 Cyl 4.6L

Cadillac Eldorado Oxygen Sensor

The Oxygen Sensor is a crucial component of Cadillac Eldorado cars as it regulates the amount of remaining oxygen in the exhaust emissions so as to enhance the proportionate mixture of air and fuel in the vehicles for superior performance and less polluting of the environment. It produces a voltage signal in relation to the level of the oxygen present and this signal is used by the engine control computer to alter the pulse wide of the fuel injector. It also provides this engine function as a feedback system called 'Closed loop' thus improving the efficiency of the catalytic converter. Most Cadillac Eldorado versions use zirconium dioxide for oxygen sensors that can be either narrow-band or wide-band. The narrow-band sensors give the inputs in the form of rich/lean signals and the wide-band sensors give a wider range inputs of the air-fuel mixture. The main difference is in the work range and the method of signal generation, and the sensors of the wide band provide more accurate information. However, they get contaminated with time and thereby cause higher emissions and a potential problem with the vehicle's performance.

Each OEM Cadillac Eldorado Oxygen Sensor we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Cadillac Eldorado Oxygen Sensor Parts Questions & Experts Answers

Sensor Asm,Oxygen
19211435
Q: How to test and replace an oxygen sensor?
A: The oxygen sensor is a device that produces a voltage when exposed to oxygen in the exhaust gases. It is in the exhaust system and can be heated internally for faster reaction. The sensor produces a voltage between zero and one volt, with a low voltage indicating a lean mixture and a high voltage indicating a rich mixture. The stoichiometric air to fuel ratio causes the voltage to fluctuate.