Mass air flow sensor

Tiny
SHELLY164
  • MEMBER
  • 1990 TOYOTA COROLLA
  • 1.6L
  • 4 CYL
  • 2WD
  • MANUAL
  • 250,000 MILES
Does my car have a mass air flow sensor? I have searched everywhere on my car and cannot find it. My car hesitates on start up but is fine at sixty mph. Can someone please help?
Tuesday, May 1st, 2018 AT 9:56 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Your vehicle does not have a Mass Air Flow Sensor. However, it has an air flow meter. A Bosch vane type airflow meter is mounted in the air induction system near the air cleaner. The airflow meter measures intake air volume, and converts these readings into voltage signals by means of a variable resistor. These voltage signals are then sent to the ECU and used to determine injection duration and proper fuel delivery. When intake air volume is low, the voltage is high; when the intake air volume is high, the voltage signal is approximately zero. Could this be the cause of the problem, yes. However, I would suggest looking for a vacuum leak or in need of a tune up. I attached a picture to help find it.
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Tuesday, May 1st, 2018 AT 6:32 PM

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