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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


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Old 02-11-2005, 05:48 PM   #1
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can I clean the o2 sensor?

so I blew some welds on my GReddy header (didn't crack this time) and I noticed my o2 sensor was basically all black with carbon. would it be bad to spray this sensor with carb cleaner or something? I noticed most people just replace this sensor and I'm assuming "no", but the Bosch ones are so expensive :\

my car runs fine, so if I can't clean it I'll just put it back in. runs a little rich, but black bumpers don't bother me.
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Old 02-11-2005, 05:53 PM   #2
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uhh I'd suggest against cleaning it, just save up the $90 for a new one.
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Old 02-11-2005, 06:54 PM   #3
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When you do buy a new one, dont go to kragen.
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Old 02-11-2005, 06:59 PM   #4
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It's ok for it to be black. When you get a new one it'lll be black in less than a week too.
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Old 02-11-2005, 07:51 PM   #5
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Black is fine, gray is good. White is bad.
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Old 02-11-2005, 07:52 PM   #6
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what the hell are you driving, a ferarri? it shouldnt be that expensive.... but if you want.... try and spray it off, if it fouls out, get a new one.... youd have to eventually anyways...
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Old 02-11-2005, 08:33 PM   #7
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wow, thats a lot of replies in a short time.

anyway, I decided not to mess with it and just put it back in. I was thinking that maybe if it was cleaner than it was it would be...better or something (perhaps helping my running rich thing). yes, yes, black is fine...

and $90 for a sensor doesn't seem expensive? okay. I also think $9 for a small bolt is also expensive, that must mean I drive a ferrari, or thats how much the bolts on the caliper are from the dealer.
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Old 02-11-2005, 08:52 PM   #8
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Do NOT try to clean the sensor. The element inside is very sensitive to solvents like brake cleaner. I would only be concerned if the sensor has oil on it, or some other form of non fuel related contamination. That could cause problems.
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Old 02-12-2005, 12:24 AM   #9
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Brake job on a Ferrari is $4k. The point is it's all relative. You have to spend money to maintain your car. Don't spend money on performance parts then skimp on maintenance parts.
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