ENGINE STARTED RUNNING ROUGHSTALLING GOT A ...

2003 GMC Sierra

Tiny

rogerballesteros

January, 1, 2013 AT 10:34 PM

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.

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2 Answers

Tiny

ASEMaster6371

January, 1, 2013 AT 10:40 PM

What were the codes?

Codes never identify bad parts, just failed systems.

Lets start with the code numbers

Roy

Tiny

rogerballesteros

January, 3, 2013 AT 4:26 AM

This is how the codes came up.

P0128- Coolant Temp below Thermostat
P0101- mass air flow range
P0420- below threshold- bank 1

replaced
MAF
Distributor
O2 Sensor bank 1
thermostat/sensor

cleared codes- engine stalled again while idling

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