What is the mass air flow sensor for? - Ford Powerstroke Diesel Forum
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post #1 of 21 Old 01-06-2012, 09:06 AM Thread Starter
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What is the mass air flow sensor for?

Broke the tip off maf sensor i was under the impression maf sensor is only for egr function.

Am I going to screw up my turbo driving it around without it. Under light acceleration and letting off it makes a cough cough cough sound

2005 6.0
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post #2 of 21 Old 01-06-2012, 09:12 PM
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Pcm uses maf input to calculate how much air is entering into the engine. Depending on the year your Iat may be integrated into maf sensor. You should replace it. Just to be sure, Maf is sensor in Intake tube between air filter and turbo - not sure how you could break that.
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post #3 of 21 Old 01-06-2012, 09:35 PM Thread Starter
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Switched intakes and broke the piece when taking it off

Anyways ordered a new one hopefully it will fix my problem
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post #4 of 21 Old 01-07-2012, 04:23 AM
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Quote:
Originally Posted by mint-6oh View Post
Depending on the year your Iat may be integrated into maf sensor.
Do you know what years this is true on? I've been trying to figure out if the IAT temps I'm reading on my scangauge are from the MAF or if the sensor is located elsewhere.

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post #5 of 21 Old 01-07-2012, 04:36 AM Thread Starter
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post #6 of 21 Old 01-07-2012, 05:45 AM
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Cough...Cough....Cough.... Sounds like Turbo farts. I would like to see some input on that issue. Steve


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post #7 of 21 Old 01-07-2012, 07:09 AM
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Not sure what years had a seperate iat sensor. It would be located in the air intake tube between air filter and maf sensor. It's a 2 wire sensor.
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post #8 of 21 Old 01-07-2012, 12:04 PM
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There are two IAT sensors. The first is in the MAF measuring "ambient" temp. The second is on the intake manifold reading actual air temp going into the engine.

There is a third air temp sensor for the temp readout in the dash.

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post #9 of 21 Old 01-07-2012, 12:22 PM Thread Starter
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Well put the maf sensor on will update tomorrow on cold start and turbo noises
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post #10 of 21 Old 01-11-2012, 05:08 PM
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Quote:
Originally Posted by wetnsloppy4x View Post
There are two IAT sensors. The first is in the MAF measuring "ambient" temp. The second is on the intake manifold reading actual air temp going into the engine.

There is a third air temp sensor for the temp readout in the dash.
What air temp readout on the dash? I think your talking about the coolant temp sensor which is on the oil cooler cover.

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