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  #13  
Old 01-01-2015, 01:31 PM
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CEL came on. Bank 1 upstream O2 sensor. Got both instead. Also picked up a can of seafoam which I'll be doing before changing the sensors. Will update in a few days

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Old 01-01-2015, 09:40 PM
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Re: 04 gc 4.0l mpg

Did you buy Denso (OEM) O2 sensors? Eventhough Bosch makes great sensors, they heat up more slowly and can cause fault codes.
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Old 01-01-2015, 09:42 PM
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I bought NGK sensors
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