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

Tiny
ZEDHI
  • MEMBER
  • 2005 TOYOTA COROLLA
  • 10,000 MILES
The car have a problem starting
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Saturday, November 5th, 2011 AT 3:04 AM

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Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
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.
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Saturday, November 5th, 2011 AT 3:09 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
I wanted to add. Make sure the fuel pressure is within spec.
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Saturday, November 5th, 2011 AT 3:12 AM

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