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Mass Air Flow Sensor

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Old Jun 30, 2006 | 06:58 PM
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Mass Air Flow Sensor

I have been told to clean the Mass Air Flow Sensor on my 03 F-250 to possibly help with fuel mileage. How should this be cleaned. Bob
 
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Old Jun 30, 2006 | 08:43 PM
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I have used brake cleaner many times on my Ranger MAFS. Just be sure to not blast the filament too hard as I have heard they can break. I did mine a couple times a year (lots of desert trips) and never broke the filament.
 
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Old Jul 1, 2006 | 12:38 AM
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bob, what engine do you have in your 2003???
 
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Old Jul 1, 2006 | 05:43 AM
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It has a 5.4
 
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Old Jul 1, 2006 | 01:17 PM
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There is a special cleaner for MAF sensors now. I've always used brake cleaner or carb cleaner.
 
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Old Jul 1, 2006 | 09:25 PM
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ok thanks, I'll give it a try..Bob
 
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Old Jul 1, 2006 | 10:07 PM
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Great Leaping Lizards Batman! I cleaned my MAF today but first happened to notice on the internet that a replacement part (in case I screwed it up) seems like was over $450.......

At least this answers one question I had, namely what is this sensor made of - The answer is money!
 
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Old Jul 1, 2006 | 11:13 PM
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You can get a replacement for $180 or less. Used ones for really cheap on ebay.

Just spray it down with cleaner, it won't break unless you touch it.

Eric
 
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Old Jul 2, 2006 | 09:36 AM
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MAFs have come a long way since the day of sneezing and braking the MAF filaments

These MAFs Ford uses are pretty stout. Still, be VERY careful...
 
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Old Jul 3, 2006 | 08:23 AM
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Originally Posted by BareBones
Great Leaping Lizards Batman! I cleaned my MAF today but first happened to notice on the internet that a replacement part (in case I screwed it up) seems like was over $450.......

At least this answers one question I had, namely what is this sensor made of - The answer is money!
Did you have P0171 or P0174 dc codes which lead you to the Mass Air Flow sensor problem? Did cleaning it help, did it resolve the problem?
 
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Old Jul 3, 2006 | 09:23 AM
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I was told to clean the Mass Air Flow Sensor as part of a mpg problem that I am having.
 
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Old Jul 3, 2006 | 12:57 PM
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CRC makes a MAF cleaner. Look where the carb cleaners are in the auto parts store. Just tried it last week. Part-throttle response is better now.
 
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Old Jul 3, 2006 | 01:18 PM
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I took the sensor out to clean it and it still looked brand new. I cleaned it anyway and my fuel mileage still hasn't improved. I have also changed the plugs and air filter. Any thoughts?
 
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Old Jul 3, 2006 | 01:39 PM
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A dirty MAF will usually make the engine run lean, getting BETTER mpgs.

It's usually not the other way around.

I'd check the O2 sensors - as they age, they read lean so the computer goes rich wasting gas.
 
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Old Jul 3, 2006 | 01:48 PM
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Ok I"ll check that. Thanks. Bob The truck only has 29k on it.
 

Last edited by ltfire99; Jul 3, 2006 at 01:49 PM. Reason: Spelling
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