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PostPosted: Tue Jun 07, 2011 12:10 am 
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Location: Browerville, MN
Year and Trim: 2004 GXP
Making this tutorial for a friend.

Locate the MAF sensor. It is directly on top of the throttle body.
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It has 2 screws hold it in.
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You'll need a T-20 Security Torx bit. The security bit has a hole in the middle. A regular torx bit will not work.
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Remove the screws
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Disconnect the electrical connection on the underside with a flat blade screwdriver
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Look through the hole in the MAF and you'll see two tiny wires with a gray filament on them. These wires detect how much air is going into the engine. If they are black/brown that means they are dirty and not giving the proper readings. They need to be cleaned.
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Using some Mass Air Flow Sensor cleaner,
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Spray the filament for 3-4 seconds. If it still doesn't get clean, VERY carefully use some Q-tips and wipe them off. Then spray again.
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Reinstall the MAF in the reverse order.

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2004 Bonneville GXP | White Gold Tricoat | custom built supercharged 3800 hot rod
2005 Town & Country Limited | Butane Blue Metallic | 200k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 150k | Official Bonneville Hauler


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PostPosted: Tue Jun 07, 2011 11:04 am 
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Location: North Western Pa
Year and Trim: 2002 Bonneville SE
Thanks Haro. I didn't ask about it but glad I checked this out.

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Cadet Blue....Not perfect...But paid for.
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PostPosted: Sun Jun 12, 2011 11:35 am 
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Year and Trim: 2002 Bonneville SLE
Another satisfied customer with this maintenance tip!

One thing to point out - I was at Pep Boys looking for the Torax -20 Security bits and no one knew what I was talking about. I looked at the tool section and didnt see anything with 'security' written on it. I went to look again and this time looking at the end of the bits - they had these Torx bits but they were labeled the same as the others.

Anyhow - look at the bits if you dont see anything labeled 'security'.

This was truly a 5 minute operation.


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PostPosted: Sun Jun 12, 2011 1:03 pm 
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Location: Fairfax, MN
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When I did mine, I used a vice-grip to remove the bolt, then replaced them with M1x2.5 allen head capscrews. Now it's even simpler to remove & replace.

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PostPosted: Fri Nov 23, 2012 7:50 pm 
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Joined: Tue Dec 06, 2011 8:46 pm
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Location: North Carolina
Year and Trim: 2000 Bonneville SE
Thanks for a most informative MAF R&R, and service pictoral guide!

FYI, the T-20 Torx Bit with tamperproof feature is now designated the "TT-20"
Lowe's sold me one for under $4.00, 1/4" drive.

mrwildroot


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PostPosted: Fri Nov 23, 2012 8:22 pm 
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Location: Las Cruces, NM
Year and Trim: 1993 Buick Park Avenue
I just threw down for one of these:

http://www.harborfreight.com/100-piece- ... 68457.html

I haven't met a screw yet that I couldn't unscrew.

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PostPosted: Fri Nov 23, 2012 8:45 pm 
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Location: Milwaukee Wi.
Year and Trim: 2002 Now DOA and rear ended like a pig on a spit
Good basic maintenance tips are always appreciated!

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PostPosted: Fri Nov 23, 2012 8:55 pm 
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Joined: Fri Dec 09, 2011 9:40 pm
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Location: Forks of the Credit, Ontario
Year and Trim: Pullied Clean 2k Black SSEi...
Pulled many a MAF without the bit. A small flat screwdriver placed right, and a quick tap via hammer will break the pin off clean. You then never need the security lock torx bit again.

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PostPosted: Fri Nov 23, 2012 8:55 pm 
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Location: Sycamore, IL
Year and Trim: 05 Chevy 'Hoe
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goochman wrote:
Another satisfied customer with this maintenance tip!

One thing to point out - I was at Pep Boys looking for the Torax -20 Security bits and no one knew what I was talking about. I looked at the tool section and didnt see anything with 'security' written on it. I went to look again and this time looking at the end of the bits - they had these Torx bits but they were labeled the same as the others.

Anyhow - look at the bits if you dont see anything labeled 'security'.

This was truly a 5 minute operation.


Friends don't let friends use Pep Boys lol.

Also I would know what a Torax bolt is either. But they should have been smart enough to know that you meant Torx size 20. The security part is the hole in the end.

Mods, maybe make this a sticky or in the TechInfo Pages?

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00Beast wrote:
Less off-topic than Lane's Heated Steering wheel, but yeah, back to the topic.


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PostPosted: Fri Nov 23, 2012 11:47 pm 
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FasGP wrote:
Pulled many a MAF without the bit. A small flat screwdriver placed right, and a quick tap via hammer will break the pin off clean. You then never need the security lock torx bit again.


...Now you tell me...

;-)

mrwildroot


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PostPosted: Fri Nov 23, 2012 11:54 pm 
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Everyone should have a security Torx set, requires 2 less tools... I.e. hammer and screwdriver...

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00Beast wrote:
Less off-topic than Lane's Heated Steering wheel, but yeah, back to the topic.


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PostPosted: Mon Dec 10, 2012 2:02 pm 
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Location: North Carolina
Year and Trim: 2000 Bonneville SE
mrwildroot wrote:
FasGP wrote:
Pulled many a MAF without the bit. A small flat screwdriver placed right, and a quick tap via hammer will break the pin off clean. You then never need the security lock torx bit again.


...Now you tell me...

So I got into the project this weekend. I have a K&N Air Filter that was ready for a good cleaning, a can of MAF Spray Cleaner, and the TT-20 Torx tool.
The directions above were invaluable, and so the entire project went very smoothly...
I can't describe the increase in power to the wheels! Even the tranny shifting anomalies vanished!
I'm watching the mileage/fuel ratio to see if there is some improvement there as well.

So, for the cost of a K&N Refurbish kit, a can of MAF cleaner, and a $3.50 tool, I have a like new car!
I highly recommend the 10 minute MAF Sensor cleaning to all fellow Bonnie owners!!!

Thanks,

mrwildroot


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PostPosted: Thu Dec 20, 2012 4:40 pm 
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Year and Trim: 2001 Bonneville SSEI (3800 Supercharged)
Does MAF Sensor Cleaner have to be used? Or will something like brakleen work?


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PostPosted: Thu Dec 20, 2012 4:45 pm 
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johnmc2010 wrote:
Does MAF Sensor Cleaner have to be used? Or will something like brakleen work?


MAF Sensor cleaner should be used. Its no where near as harsh as brake clean.

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00Beast wrote:
Less off-topic than Lane's Heated Steering wheel, but yeah, back to the topic.


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