cleaning O2 sensor

[muddytires]

MY 89 xj is running lean. The only engine mod is a home brew high flow cone filter.(removed stock air box). Before i go out and buy a new O2 sensor to see if this solves the problem; Can i try to clean the sensor to remove carbon build up or will this damage it, using solvents?

 

[red91]

MY 89 xj is running lean. The only engine mod is a home brew high flow cone filter.(removed stock air box). Before i go out and buy a new O2 sensor to see if this solves the problem; Can i try to clean the sensor to remove carbon build up or will this damage it, using solvents?

Just by a new one. most of the time cleaning will not do anything.

 

[Gerr]

i agree wasting your time trying to clean it doesnt out weigh the benifits of a new one. Plus its just good maintenance

 

[muddytires]

Is a bad o2 sensor a probable cause for a lean mixture?

 

[Gerr]

yup it can be the culprit. also check for vacume leaks

 

[muddytires]

Thanks!!! Does anyone know where i can get a new O2 sensor at a good price? I asked at an Auto zone and remember the price being high.

 

[red91]

Thanks!!! Does anyone know where i can get a new O2 sensor at a good price? I asked at an Auto zone and remember the price being high.

Got one from napa about a year ago...bosch.. $65.00 or so.

 

[Sparkman]

https://www.automedicsupply.com/catalog4.php?PHPSESSID=c854a765ef2e2a18f138b97409b76e67

$52.50 no tax no shipping. They ship priority mail so it only takes a couple of days. I have been very happy with their sensors.

 

[Runnin'OnEmpty]

It's easy to test a Renix O2 sensor with a voltmeter. The O2 wiring routes right next to the fuel pressure regulator, at the front of the engine. Unwrap the small bundle of wires and locate the gray wire; that's the O2 signal wire. Press a straight pin into the wire, and touch the positive voltmeter probe to the pin, and the negative probe to engine ground. With the engine idleing, the voltage will switch from 0v to 5v once every second, if the O2 sensor is GOOD. A BAD sensor will show either 0v or a steady 5v on this wire.

Since the Renix's didn't have a check engine light, this is the only reliable way to check for a good/bad O2 sensor.

 

[bajacalal]

I would have to say you ought to get an OEM one since some people have complained about aftermarket ones not working right. Also DO NOT immerse your 02 sensor in a solvent, it will ruin it. If you clean it, just use a dry old toothbrush or something like that.