I read this online:
Quote
Heated three and four-wire O2 sensors on mid-1980s through mid-1990s applications should be changed every 60,000 miles. And on 1996 and newer OBDII-equipped vehicles, the recommended replacement interval is 100,000 miles. A good oxygen sensor is essential for good fuel economy, emissions and performance.
I've noticed over the years on my (older 1-wire O2 sensor) vehicles, they start to experience fuel economy degradation long before the oxygen sensor is considered 'bad' by the ECU and a code thrown. I think I'm well ahead of the game by throwing a $20 oxygen sensor at such vehicles every 50k than paying for it in the form of lower MPG. Most of my fuel is bought at $5+/gallon over the past 10-15 years, so loss of efficiency really does add up!
On a (new to me) vehicle, that has 110k on its 4-wire heated O2 sensors, I am contemplating replacement. Even though the cost is considerable ($150 for parts!).
Anyone else do this, change O2 sensors by distance (miles) travelled, rather than waiting for a CEL (or failed emmissions testing) to force the issue?
Of course the manufacturers *never* put oxygen sensor replacement in their owners manuals.
Quote
Heated three and four-wire O2 sensors on mid-1980s through mid-1990s applications should be changed every 60,000 miles. And on 1996 and newer OBDII-equipped vehicles, the recommended replacement interval is 100,000 miles. A good oxygen sensor is essential for good fuel economy, emissions and performance.
I've noticed over the years on my (older 1-wire O2 sensor) vehicles, they start to experience fuel economy degradation long before the oxygen sensor is considered 'bad' by the ECU and a code thrown. I think I'm well ahead of the game by throwing a $20 oxygen sensor at such vehicles every 50k than paying for it in the form of lower MPG. Most of my fuel is bought at $5+/gallon over the past 10-15 years, so loss of efficiency really does add up!
On a (new to me) vehicle, that has 110k on its 4-wire heated O2 sensors, I am contemplating replacement. Even though the cost is considerable ($150 for parts!).
Anyone else do this, change O2 sensors by distance (miles) travelled, rather than waiting for a CEL (or failed emmissions testing) to force the issue?
Of course the manufacturers *never* put oxygen sensor replacement in their owners manuals.