Where is the Mass airflow sensor?

[Greg97]

I want to clean the Mass Air Flow sensor and I can't figure out where it's located. I have a 1997 F-250HD 5.8L V8 4X4. Can anyone tell me where it's situated?

 

[Fellro]

I don't immediately know, but it has to be in the incoming air stream. Many times it is bolted to the air box, other times it is in the intake air hose, the final place it can be is attached to the throttle body on the intake.

 

[Greg97]

Thanks Fellro. I disconnected the 2 hoses to the throttle body and no sensor there and on the other end nearest to the air filter and nothing there either. Is it possible I do not have one?

 

[Fellro]

looking at the part, it should be attached to the air box.

 

[98f150base]

You have to take the round part of the air filter assembly off and pry the inner section out. You will see the wires going into the housing push them gently in to give some slack. Use a flat screw driver to pry the inner piece out. Reach in and unplug the sensor. It has tamper proof torx I believe they are h25 or h27 bits. Use brake clean it MAF cleaner only no carb cleaner it leaves a film.

Thus pic might help

 

[98f150base]

 

[98f150base]

Do you have a 5.8 or 5.4?? They did make a f250 in both body styles in 97 thru 99 etheir way it should have a MAF and if should be in or in the air cleaner assembly

 

[5.0Flareside]

No the only year they had the OBS was 97 and it would be a 5.8.. And not all of those had MAF as they were emmissions exempt and some were.still speed density...


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[98f150base]

Ahh didnt they continue the f350s till 1999?

 

[O'Rattlecan]

They had the old body style & 5.8L (351w) through 97 for the 350 trim. The 5.8 didn't live past that, so I doubt that's what you have.

Ryan

 

[Greg97]

Thanks for everyone's responses! After disconnecting the 2 air hoses I saw there was no MAF sensor on either end. From what I understand it was just after my model year (1997) that they started adding the MAF sensor. The sticker on the inside of my door says it was manufactured in January 97.

 

[5.0Flareside]

Can I ask what the need was to find the non existent MAF sensor?


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[jebadiah04]

He wanted to clean it

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[Fellro]

^^^ as specified in the very first post...

 

[5.0Flareside]

I done forgot about that.. Lol..


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