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Chevrolet Master
3,640 Answers
- Posted on Jul 09, 2011
Re: I have 2003 trailblazer and its runing ruff missing...
P0103 is maf sensor A high input. ( manifold air flow ).
Verify that the Mass Air Flow Sensor wiring is connected properly and that there are no broken / frayed wires.
Inspect for any air leaks near the MAF sensor.
Take the MAF out and clean it using a spray cleaner such as brake cleaner or electrical contact cleaner. Be gentle with the sensor.
Check the voltage of the MAF sensor (refer to a repair manual for vehicle specific information)
Replace the MAF sensor. you can buy maf sensor cleaner at any auto parts store. follow directions on back of maf sensor cleaner. clean sensor first this may solve problem. good- luck!! do not touch inside of sensor with the straw from the can or anything else, just spray it and let dry, then put back on car.
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