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How dos a mass airflow senser work

Tiny
STEWART
  • MEMBER
  • 2005 FORD TAURUS
  • 90,000 MILES
Car starts then motor revs to 3500rpms then cuts off but if I keep gas pedel engaged rpms go up and down and then shut off
Wednesday, February 8th, 2012 AT 12:24 AM

3 Replies

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Check and clean the EGR and IAC.

A mass air flow sensor measures the amount of airflow across it. Some do it by measuring the amount of thermal change in the sensor caused by the air charge, others do it by measuring the amount of deflection of the vane in the air flow.
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Wednesday, February 8th, 2012 AT 12:27 AM
Tiny
STEWART
  • MEMBER
  • 2 POSTS
Thanks but would it cause my car 2 start then shut down
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Wednesday, February 8th, 2012 AT 12:32 AM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Are you getting any codes? Check engine light? Check for vacuum leaks. You need to check for both hard and soft codes.
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Wednesday, February 8th, 2012 AT 1:09 AM

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