Question about 2008 Mazda 6 2.3i

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Map sensor where exactly is the map sensor and how do i get to it? underneath the car or on top?

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  • Mazda Master
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Well, it would not be underneath. Often were attached to firewall behind the engine, or on top of engine somewhere. But check, nowadays the map sensor has been replaced by a MAF sensor (mass air flow sensor) to give the engine computer the same information-how much air is going to engine to compute correct air/fuel mixture.
The MAF sensor is in the big rubber boot from the air filter housing to the throttle body assembly, where air enters the top of engine. There will be a wiring harness connected to it. The sensor is very delicate, but can be taken off and cleaned with a spray can of MAF sensor cleaner, available just about anywhere. I've seen cans of the stuff at Walmart.

Posted on Jul 26, 2013

Testimonial: "i have done some research and in my haynes manual says that it's under the intake manifold on the drivers side, held in by a 10mm bolt. i don't know the easiest way to get it out though"

  • montehammons Jul 27, 2013

    Hmm, guess you will have to check there then. I would not think the intake would have to be removed to reach it, but I don't know. A map sensor would have a 3 wire connector and a single vacuum hose from the intake manifold to it. You might try to follow a vacuum hose in that area.

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