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Old 20th April 2019, 13:15   #1
75driver
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Default Purpose of map sensor (diesel)?

Can anyone tell me the exact purpose of the map sensor?
I know it reads manifold air pressure, but for what purpose?
Does it “control” anything?


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Old 20th April 2019, 16:43   #2
bl52krz
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Yes. It sends a signal to the ecu along with the maf sensor, of the pressure in the manifold and it helps the maf /ecu to control the amount of fuel to be delivered to the engine under all conditions.
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Old 20th April 2019, 16:44   #3
grivas
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Quote:
Originally Posted by 75driver View Post
Can anyone tell me the exact purpose of the map sensor?
I know it reads manifold air pressure, but for what purpose?
Does it “control” anything?


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Hey, I believe it has to do with ignition timing, and therefore fuelling, not certain, please do not try to clean it by inserting anything into the tiny orifice as it will probably destroy it just disconnect the wire and withdraw the sensor then wipe away the oily deposits with a soft cloth.
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