Cleaning 02 Sensors
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Well I browsed around today and saw a few threads here and there about cleaning 02 sensors. It seems electrical cleaner works alright. So I took the chance cleaning mine, I was prepared to buy new ones if I had to.
I used my own idea and dipped the heads in CLR for a few minutes and then washed them off with electrical cleaner. Boy did they look new, but lets see if they work better if at all now. So I dried them out with a air gun and reinstalled them. She started right up and then went into a seizure, the idle was very low and shaky
. I figured maybe they needed to warm up and burn out any remaining chemicals on them. My scanner said (Random Misfire) After a test drive and a hard run it smoothed out and ran better than before I cleaned them. Go figure
PLEASE DONT do this if you cant afford new 02 sensors or nothing is wrong with your o2 sensor(s)( $280 for set of 4, for my truck). It just seemed to work for me. I am sure there are threads about this here, Just wanted to share mine.
I used my own idea and dipped the heads in CLR for a few minutes and then washed them off with electrical cleaner. Boy did they look new, but lets see if they work better if at all now. So I dried them out with a air gun and reinstalled them. She started right up and then went into a seizure, the idle was very low and shaky
. I figured maybe they needed to warm up and burn out any remaining chemicals on them. My scanner said (Random Misfire) After a test drive and a hard run it smoothed out and ran better than before I cleaned them. Go figurePLEASE DONT do this if you cant afford new 02 sensors or nothing is wrong with your o2 sensor(s)( $280 for set of 4, for my truck). It just seemed to work for me. I am sure there are threads about this here, Just wanted to share mine.
Last edited by Mike Sigmond; Apr 10, 2009 at 12:17 AM.
You used CLR? I didn't think it would be safe for sensors. You might be in the lucky category on that one.
Zuki: CLR is that cleaner that says Calcium, Lime, Rust on it. It used to even be on tv where a clogged shower head was like new after like two minutes and a nasty penny looked new after thirty seconds.
Zuki: CLR is that cleaner that says Calcium, Lime, Rust on it. It used to even be on tv where a clogged shower head was like new after like two minutes and a nasty penny looked new after thirty seconds.
Thread Starter
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Joined: Apr 2009
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From: Orange County, CA


