Walker Products Oxygen Sensor P/N:250-24947
Walker Products 250-24000 oxygen sensor for the 1991-1994 Ford Topaz 4-cylinder 2.3L measures the oxygen in the exhaust gas to show how efficiently the engine burns fuel. This Walker Products oxygen sensor is the upstream unit and gives the ECU the diagnostic feedback it needs.
A failing oxygen sensor can show up as rough running, higher fuel consumption or a lit check engine light, but other faults produce those symptoms too, so find the cause before you replace it. With the engine off and cool, look over the sensor, its wiring harness and its connector for physical damage, which can also shorten the sensor's life.
This sensor fits the 1991-1994 Ford Topaz 4-cylinder 2.3L, and the engine takes one upstream sensor.
Fit and size
Build and materials
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Is the Walker Products 250-24000 oxygen sensor right for a 1991-1994 Ford Topaz 4-cylinder 2.3L?
Yes. The Walker Products 250-24000 is an upstream oxygen sensor for the 1991-1994 Ford Topaz 4-cylinder 2.3L, and that engine takes one.
Is this oxygen sensor narrow-band or wideband?
It is narrow-band with a 4-wire connection. The Walker Products 250-24000 reads the oxygen content of the exhaust gas to monitor the air-fuel ratio.
Is this an upstream or downstream oxygen sensor?
This is an upstream sensor. It determines the oxygen content of the exhaust gas so combustion efficiency can be monitored.
What does the platinum layer on this oxygen sensor do?
The electrodes are coated with a gas-permeable platinum layer. The coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases.
Will a failing oxygen sensor set a fault code?
Newer vehicles store fault codes in the ECU, and some relate to the affected sensor and its systems. A failed sensor can also show as rough running, higher fuel consumption or a check engine light.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.