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o2 sensor???

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  #1  
Old 10-22-2009, 06:29 PM
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o2 sensor???
where would the o2 sensor be on a 96 f150 4.9l when i get this code. P0147 Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 3)
and heres the other code i got...
P0301 Cylinder #1 Misfire Detected

thanks
 
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Old 10-22-2009, 09:01 PM
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I'm guessing the I6 has 2 forward sensors on each half of the header and 1 after cat sensor and that's the one you need to investigate, if the fuse is good change the sensor.
 
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Old 10-22-2009, 10:29 PM
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yes it is the I6. theres a fuse for the o2 sensor? wheres the fuse?
 
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Old 10-22-2009, 11:29 PM
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ok found the fuse, fuse was good went to autozone got a new sensor. it was original with 200,000 on it. i disconected the battery and we'll see what happens...god i hope this fixes it!!!
 
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Old 10-23-2009, 07:28 AM
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When I have O2 sensor issues on cars that have more than 1 sensor, I just replace all of them at the same time to avoid issues with them later.
 
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Old 10-23-2009, 08:22 AM
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i thought the 4.9 only had one o2 in the exhaust system?????
 
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Old 10-23-2009, 08:32 AM
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On the 96 trucks they all had 3 I believe since they are OBD II.
 
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Old 10-23-2009, 08:40 AM
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not trying to hijack a thread or anything but everything with obd1 has one tho rite..? i was almost positive my 95 f150 with the 4.9 had 1???
 
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Old 10-23-2009, 08:44 AM
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'95 4.9 cali model had 2 sensors, don't know if other OBD-1 MAF versions did too but it's possible.
 
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