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Old 10-18-2006, 01:53 PM   #1
Vitalssj
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Does any one know where this o2 sensor is

I have a scanner which picked up a code in my 97 blazer it says sensor 3 of the o2 sensors is bad does any one know where sensor 3 is?
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Old 10-18-2006, 05:21 PM   #2
MT-2500
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Re: Does any one know where this o2 sensor is

Quote:
Originally Posted by Vitalssj
I have a scanner which picked up a code in my 97 blazer it says sensor 3 of the o2 sensors is bad does any one know where sensor 3 is?
Well codes do not say 02 sensors are bad.
They say check thing out.
What engine and what is the code no?
Sensor 3 can be found on the rear of cat.
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Old 10-18-2006, 06:20 PM   #3
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Re: Does any one know where this o2 sensor is

P0420?
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Old 10-18-2006, 07:29 PM   #4
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Re: Does any one know where this o2 sensor is

sensor 1= in y-pipe after drivers side manifold
sensor 2=right before the cat i believe
sensor 3= after the cat and before the muffler
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