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What should a MAF sensor read in G/S at idle?

Tiny
YAZIDAN
  • MEMBER
  • 2004 TOYOTA COROLLA
  • 1.8L
  • 4 CYL
  • 2WD
  • MANUAL
  • 240,000 MILES
I was just curious the one in my car reads 1.45g/s at 700 RPMs. Also, when the engine is off key on or when the MAF sensor connector is disconnected, the MAF reads 0.37g/s. Does the manufacturers provide specifications for air flow at idle, or at several engine speeds.
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Tuesday, September 3rd, 2024 AT 2:40 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 46,719 POSTS
MAF sensor reading at idle should typically be around 2 to 5 grams per second (g/s). This range can vary slightly depending on the exact conditions, such as engine temperature and altitude. The reading with the sensor disconnected is probably normal.
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Tuesday, September 3rd, 2024 AT 3:59 PM

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