Oxygen Sensor

[THEFERMANATOR]

Originally Posted by C YENSEN

Ferm...98 explorer, 5.0 litre V8, 158,000 miles.

oh and the darn ABS light wont go off either???

thanks for the input fellas

Most likely the ABS light is the vehicle speed sensor in the rear end(very common issue), but would need to know the code to be certain. As for teh O2 sensor, I did a quick parts check and it appears as though that vehicle uses 4 of em. So saying it needs an oxygen sensor can be costly as they normally cost about $70 EACH(X4 is $280 for a guess as to which one it is). And at 158K miles there is always a chance that one of your cat converters is going bad and that is popping the code. Does your exhaust have any rattles in it? If so then I would be suspect of a cat converter. Also if you have a bad O2 and continue to drive it you can burn a cat converter out as the PCM has no way of knowing how it is running the cat converter, and they tend to melt down once you get beyond about 1580 degrees(1480 is what you normally want to maintain as the upper limit for longevity though). And as stated, it could simply be a heating element gone out. This kind of failure is the most common, but can lead to problems as well.