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Oxygen Sensor O2
ENGINE STARTED RUNNING ROUGHSTALLING GOT A ...
2003 GMC Sierra
Engine started running rough/stalling, got a diagnostic code of MAF, and then thermostat/sensor, and the O2 sensor bank 1.I replaced all 3 of these items but engine is still running rough.
Tuesday, January 1st, 2013 AT 10:34 PM
What were the codes?
Codes never identify bad parts, just failed systems.
Lets start with the code numbers
Tuesday, January 1st, 2013 AT 10:40 PM
This is how the codes came up.
P0128- Coolant Temp below Thermostat
P0101- mass air flow range
P0420- below threshold- bank 1
O2 Sensor bank 1
cleared codes- engine stalled again while idling
Thursday, January 3rd, 2013 AT 4:26 AM
to post a reply.
I replaced an oxygen sensor and now it is smokeing is this normal
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I have a problem code p0420 bank 1 sensor 2 whitch o2 sensor do i need to replace
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