Probably referring to a heated oxygen sensor.
Oxygen sensor on 1990 Subaru Legacy is under car, just behind engine where exhaust manifolds join but before catalytic converter. Wires run up right side of bellhousing and connect into wiring harness.
I just purchased new catalytic converters for my 1999 Subaru Legacy Outback. There are three ports for oxygen sensors. They appear to be on the top of the converters. I just purchased new catalytic converters for my 1999 Subaru Legacy Outback. There are three ports for oxygen sensors. They appear to be on the top of the converters.
Both o2 sensors are located on catalytic converter. Sensor closest to front of car is upstream sensor. Sensor closest to rr of car is downstream sensor.
The function of the oxygen sensor in a Subaru or any other car is to measure the amount of oxygen that is mixed with exhaust gases.
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When a Subaru has a faulty O2 sensor the fuel management is out of whack.
In a 1991 Subaru Legacy, the speed sensors can be found on the driver's side of the transmission. They are located towards the rear, and there are three of them.
Under the sea.
In a 1998 Subaru Legacy, the knock sensor is located on the top of the engine block and to the left of the engine. More specifically, it is under the left rear intake manifold runner.
For the heater core. All cars have them.
Directly below the alternator on the block.