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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 12-17-2012, 07:25 PM
G-Moussa's Avatar
G-Moussa G-Moussa is offline
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Stripped Screws on MAF

Hello everyone,

I am in a bit of a dilemma. My friend was cleaning his MAF today on his e46 M3. So since he bought the cleaner i'm like lets clean mine too. I proceeded to remove the MAF electrical connector, then i thought let me unscrew the remaining maf from the air duct.

I borrowed the tx20 bit from my friend and tried turning the screws. They did not budge, i thought maybe i require a different size bit but nope. I finally cleaned some dirt, and noticed that both screws are stripped.

I removed the maf from the duct going to the engine, and by removing the upper air box housing but still could not remove the sensor from the housing. The tx20 screws would not come out.

Is there any way I can get these out, it is driving me nuts.

My OCD nature will not let me stop until I get them out.
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  #2  
Old 12-17-2012, 08:51 PM
edjack edjack is offline
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Go to your local hardware store, and whisper "screw extractor" in the ear of a clerk.
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  #3  
Old 12-17-2012, 08:59 PM
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G-Moussa G-Moussa is offline
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I figured there might be something out there. One more thing. Is there any way I could get replacement screws without ordering a whole mass air flow sensor?
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  #4  
Old 12-17-2012, 09:05 PM
JimLev JimLev is offline
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Those screws are torx security screws that have a center pin.
How did you get a t20 in the screw head?
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  #5  
Old 12-17-2012, 09:20 PM
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G-Moussa G-Moussa is offline
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Quote:
Originally Posted by JimLev View Post
Those screws are torx security screws that have a center pin.
How did you get a t20 in the screw head?
I know they are. They are called tx20 bits and have the hole in the bit to fit over the screw with the centre pin. Just the fact that they are stripped sucks. Even if I get them out I need to find replacements as putting them in is useless
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  #6  
Old 12-28-2012, 11:28 AM
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540iman 540iman is offline
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I replaced with appropriate length and size sheet metal screw with Phillips head. Unless you are truly worried about your maf being stolen, you don't need those damn safety screws. You can get the old screws out EASILY with a decent vice grip pliars. Turn the vice grips sideways and you can get enough bite to gets them loose. Before I changed them to a std. Phillips screw (abt. 1" long), I used my dremel tool and cutting wheel and put a straight slot across middle of oem bolt and then you can use a flat blade screw driver. Your choice.
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Old 01-03-2013, 03:20 PM
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calcioboy calcioboy is offline
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Mein Auto:
same here -

I used a pair of small vice grips and easily removed the torx screws
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