How many miles O2 sensor replacement?
Thread Starter
Senior Member
Joined: May 2001
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From: laurel, md usa
How many miles O2 sensor replacement?
couldn't find in the manual or any threads recommending maintenance regarding O2 sensor replacement at xx,000 miles. I recall from other vehicles I've owned numbers like 60,000 miles. Anybody know maintenance schedule for O2 sensor?
Rotary Freak
Joined: Jan 2004
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From: tampa
50,000 or so on a stock car. honestly you only replace them when they go bad. the ecu will let you know when it flat lines. your other option is to get a good meter or a scan tool and look at how it switches.
Jesus is the Messiah
Joined: May 2003
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From: Silver Spring, MD
Every single car I have ever owned has had its O2 sensor last 80,000 miles and die shortly after. (Except my 66 Mustang, for obvious reasons)
By die, I mean that it no longer reacts fast enough to AFR changes to be of much use. I have never seen an O2 sensor 'flatline' :O (Not saying it isnt possable)
You can always just hook a voltage gauge up to it and watch how fast it responds (0V-1V), if it responds within the acceptable range (hits ~.5V on cruise) or if it responds at all :P
By die, I mean that it no longer reacts fast enough to AFR changes to be of much use. I have never seen an O2 sensor 'flatline' :O (Not saying it isnt possable)
You can always just hook a voltage gauge up to it and watch how fast it responds (0V-1V), if it responds within the acceptable range (hits ~.5V on cruise) or if it responds at all :P
Last edited by Tofuball; Mar 25, 2005 at 08:41 AM.
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From: Dallas
Every O2 sensor I've ever seen on any car begins to decline in performance and cause poor mileage way before it ever trips the CEL.
The CEL in general is a poor judge of performance for any sensor's health. The CEL doesn't trip until some specific parameter is reached and it's incapable of telling you about the true health of a sensor, only if it's an obvious malfunction. Just because the CEL isn't on doesn't mean you don't have sensors that aren't up to snuff.
The CEL in general is a poor judge of performance for any sensor's health. The CEL doesn't trip until some specific parameter is reached and it's incapable of telling you about the true health of a sensor, only if it's an obvious malfunction. Just because the CEL isn't on doesn't mean you don't have sensors that aren't up to snuff.
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