99 c70 Coupe Mass Air Flow Sensor Removal

[smmaharaj]

Does anyone know what kind of special tool is required to remove the MAF from the housing?

I am following up on a string of MAF postings and suspect mine needs a good cleaning to sort out idle issues etc.

Any help or advice? I just spent half an hour at Pep Boys with a sales guy and no luck on finding the tool that fits right.

Thanks,

Sean

[billofdurham]

Do you need to remove it to clean it? MAF cleaner comes in an aerosol and is sprayed with it in situ. I haven't done it on a C70 but I have cleaned them on other Volvo models and other makes.

Bill.

[smmaharaj]

Yes, I am trying to remove it to clean it.

I disconnected it to see if it affected my rough idle and sure enough it is the source of my problem.

I bought the cleaner, but I could not find the right tool even at Pep Boys to remove it for the cleaning process.

S

[SilverS70]

Is it hard to remove because the torx has the raised 'dot' in the middle?

If so, go to AutoZone and ask for Great Neck Part Number: TQR9C. $9.99 Thats what I did.



Looks like this


Its a Star Torx Set. Also know as a 'Tamper Proof' Security Torx. If my memory is right, its T20 size. You have to buy the set, nearly impossible to find for sale individually.

If you have a really clean, good brand of pliers, you might be able to grab the outer edges of the head of the bolt and twist it out.

Also, depending on mileage, cleaning a MAF is a short term fix, IMHO.

[hudi82]

Once you get the 2 screws holding the MAF to the filter housing out, loose the clamp on the other side. Now the MAF should turn loosely but won't come out easily. Take a flat screwdriver and pry it out from the plastic hose. I think there is a small tab on the hose that will help you getting a grip. It's not going to be pretty, but once you install it back and tighten the clamp, it all should be fine.