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2001 BMW X5 HOW CAN YOU TEST A MASS AIR FLOW SENSOR

Tiny
MYSWEETX5
  • MEMBER
  • 2001 BMW X5
  • V8
  • 4WD
  • AUTOMATIC
  • 112,322 MILES
HOW CAN YOU TEST A MASS AIR FLOW SENSOR EASILY WITHOUT ANY TESTER EQUIPMENT? BECAUSE MY LITTLE CONTROL (MPG) AT THE DASHBOARD KEEPS GOING ONE SIDE TO OTHER WHILE DRIVING. BEFORE I PROCEED TO ANY OTHER PARTS RELATED, I JUST WANT TO ENSURE THAT THE AIR MASS SENSOR IS WORKING PROPERLY. OTHERWISE I PULLED OUT CODES: (P0171/P0174)
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Saturday, September 25th, 2010 AT 5:08 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Lean fuel conditions;

Try tapping it while the engine is idling if it reacts-clean the MAF sensor with an electronic cleaner CRC and see what happens, also might want to clean out the EGR valve if it has one and check fuel pressure
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Saturday, September 25th, 2010 AT 5:26 PM

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