Quote:
Originally Posted by jasonw
You cannot turn them "off", so to speak. You can disconnect them, but then you get a CEL.
Is yours popping a code?
The rear O2 sensor (this applies to all states except Cali trucks) has nothing to do with fuel/air ratio, gas mileage, performance, etc. etc. All it does is monitor the catalytic converter. If the converter fails or is not doing its job adequately (or the sensor goes kaput), a code is generated and you get a CEL.
The only way to really turn them off is to acquire an O2 sensor simulator, a little electronic box that fools the computer by sending it perfect O2 sensor readings. It plugs into where the O2 sensor goes. Trouble is, it costs more than a new O2 sensor.
And if the sensor isn't the problem, and the converter is failing, that will cause you lots of issues. Eventually it'll plug up (usually), and you won't have any power and sometimes you can't even get past 3000 RPMs or get anywhere near highway speeds. |
the other route to the sim is a non-fouler....Rock Auto has them - search under vehicle -> ignition -> spark plug non-fouler
it backs the rear O2 sensor (behind the cat) out of the exhaust stream which can result in that sensor not throwing a code