Can you use the same O2 sensor for upstream and downstream?
A: Each vehicle is different in the amount of O2 sensors they have. A: The upstream sensor threads into the pipe coming from the engine, closer to the front of the car, and the downstream sensor threads into the catalytic converter, more toward the rear of the vehicle. They are not interchangeable.
Is there a difference between upstream and downstream 02 sensor?
The upstream sensor monitors the level of pollutants in the engine’s exhaust and sends this information to the ECU that continuously adjusts the air-fuel ratio. The downstream sensor measures the level of pollutants passing through the catalytic converter.
Where is the upstream oxygen sensor on a car?
The upstream oxygen sensor is located before the catalytic converter. This measures the level of pollutants coming directly from the engine. It also senses any raw, unburned fuel coming from the combustion chambers. The downstream oxygen sensor is located directly after the catalytic converter.
Is a universal oxygen sensor really universal Subaru?
ScoobyFilter: It’s time to replace the oxygen sensors in my 2001 Subaru Outback. “Universal” replacements run about half the cost of the OEM version. Am I asking for trouble by taking the cheap way out? I drive a 2001 Outback VDC with the H6 engine. It takes three O2 sensors — two before and one after the catalytic converter.
How much does a universal O2 sensor cost?
It takes three O2 sensors — two before and one after the catalytic converter. They’re all the four-wire type. The car has 165,000 miles already so the less money spent the better. Surfing the ‘net suggests I have two options — go with OEM-style sensors for about $100 each, or “universal” 4-wire sensors for under $50.
How do you wire a universal oxygen sensor?
Splice the new wires. Take the wires on the new sensor with the wires that were previously connected to the connector. These are the same wires that were removed from the connector in step 1. Identify the different wires.
The upstream oxygen sensor is located before the catalytic converter. This measures the level of pollutants coming directly from the engine. It also senses any raw, unburned fuel coming from the combustion chambers. The downstream oxygen sensor is located directly after the catalytic converter.
It takes three O2 sensors — two before and one after the catalytic converter. They’re all the four-wire type. The car has 165,000 miles already so the less money spent the better. Surfing the ‘net suggests I have two options — go with OEM-style sensors for about $100 each, or “universal” 4-wire sensors for under $50.
ScoobyFilter: It’s time to replace the oxygen sensors in my 2001 Subaru Outback. “Universal” replacements run about half the cost of the OEM version. Am I asking for trouble by taking the cheap way out? I drive a 2001 Outback VDC with the H6 engine. It takes three O2 sensors — two before and one after the catalytic converter.
Splice the new wires. Take the wires on the new sensor with the wires that were previously connected to the connector. These are the same wires that were removed from the connector in step 1. Identify the different wires.