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Old 02-13-2013, 05:44 PM   #1
comp1
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Default 2003 legacy maf

Were on earth do i find my maf sensory on a 2003 subaru legacy and what does it look like
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Old 02-13-2013, 08:26 PM   #2
RaceFaceXC
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In the intake tube before the TB. It will have a plug/wire harness attached to it. It's in a plastic, round housing.
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Old 02-13-2013, 08:53 PM   #3
Elbert Bass
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2003 Legacy does not use MAF, it has a pressure sensor (MAP). That is located in the top of the throttle body with a 3 wire flat plug.
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Old 02-13-2013, 09:35 PM   #4
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Quote:
Originally Posted by Elbert Bass View Post
2003 Legacy does not use MAF, it has a pressure sensor (MAP). That is located in the top of the throttle body with a 3 wire flat plug.
On my part
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Old 02-13-2013, 11:15 PM   #5
Elbert Bass
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Quote:
Originally Posted by RaceFaceXC View Post
On my part
I say we blame Subaru, they were the ones that kept changing it ;-)
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Old 02-18-2013, 12:51 PM   #6
comp1
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Does this sensor normally go out or get dirty causing a no start. the car will start after shooting either into the tb then die after 10 seconds
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Old 02-19-2013, 12:04 PM   #7
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Quote:
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Does this sensor normally go out or get dirty causing a no start. the car will start after shooting either into the tb then die after 10 seconds
MAP does not usually affect starting as there is not enough pressure differential during cranking for it to read. Since it won't fire off without ether and immediately dies I would see if you are getting fuel or have a massive vacuum leak. Do you have any DTC (codes)?
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Old 02-20-2013, 11:11 PM   #8
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I agree with Elbert. It's running for 10 seconds off of the starting fluid you're using, soon as its gone, it has no fuel and dies. Sounds like you're not getting fuel. or your injectors are not firing. MAP is Manifold Absolute Pressure. It detects changes in the air pressure and adjusts air/fuel accordingly. Not as good as a MAF IMO but if I remember right, it should run even without being plugged in. codes?
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Old 02-23-2013, 01:22 AM   #9
comp1
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I tried plugging a code reader up i got from the local parts store but no codes at all came up. checked the fuel pump and it is pumping gas. any more suggestion. i thought also it maybe the o2 sensor that has gone out could that be a possibility. didnt check the injector
dont know what else to try
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Old 04-29-2013, 02:08 PM   #10
comp1
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Default car dies after a few seconds apon shooting either in throttle body.

checked fuel pumps gas when turning ignition key is there something that can go out on the car between the fuel filter and the fuel injectors i dont see any thing except a vaccum valve please help guys been dealing with for a long time . when i blow on the line between the filter and ejectors there is no air going through
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