what is a map sensor how does it work what does it control

2005 TOYOTA COROLLA
10,000 MILES
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ZEDHI
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  • 15 POSTS
the car have a problem starting
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Nov 4, 2011 at 8:04 PM
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JACOBANDNICKOLAS
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That stands for Manifold Absolute Pressure sensor (MAP). It determins the air flow in the intake, sends a signal to the ECM, and from that the computer determines the correct fuel metering to the engine.
Nov 4, 2011 at 8:09 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
I wanted to add... Make sure the fuel pressure is within spec.
Nov 4, 2011 at 8:12 PM
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