Mass Air Flow Sensor cleaning! - Mercedes-Benz Forum

Go Back   Mercedes-Benz Forum > Mercedes-Benz Roadster Forums > R129 SL Class
New User? Register - Forgot Password

BenzWorld.org is the premier Mercedes-Benz Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 07-17-2008, 05:26 AM   #1 (permalink)
BenzWorld Newbie
 
Date registered: Apr 2007
Posts: 1
Mass Air Flow Sensor cleaning!

1999 SL500 70,000 miles.
I had the check engine light come on then go off, then on. The code said the mass airflow sensor was the problem. They wanted $390.00 for the part and 1 hr. labor to replace.
The local European parts store told me to try to clean it. $6.00 for the cleaner and about 30 minutes to do the job.
No more check engine light and the performance difference is astounding.
ksmack1940 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 07-17-2008, 06:48 AM   #2 (permalink)
Administrator
 
RedLiner's Avatar
 
Date registered: Sep 2006
Vehicle: 1998 Pano SL500; 1993 SL500; 2005 ML270cdi
Location: Spain / Gibraltar
Posts: 6,007
Lifetime Premium Member
It's always worth cleaning the MAF before replacing. I cleaned mine when the car was misfiring and the ASR light was coming on and it completely cured all of the faults.
I just used 96ยบ alcohol to clean the very fine filament by squirting the alcohol from a plastic bottle with a very fine hole directly on to the fine filament.
RedLiner is online now   Reply With Quote
Old 07-18-2008, 09:38 AM   #3 (permalink)
BenzWorld Member
 
1992300SL's Avatar
 
Date registered: Jan 2008
Vehicle: 1992 300 SL,1999 SL 500
Location: LONG ISLAND
Posts: 294
Send a message via MSN to 1992300SL
where is the maf?? do you have any pics of it, im wondering if i would need to clean mine. thanks
__________________
1992 300 sl (sold)

2005 C240 4MATIC (SILVER moms

1999 SL 500 77K (SILVER) bros
1992300SL is offline   Reply With Quote
Old 07-18-2008, 09:52 AM   #4 (permalink)
BenzWorld Elite
 
msbarsi's Avatar
 
Date registered: May 2006
Vehicle: 2000 Obsidian Black Metallic Mercedes SL 320 V6
Location: Northern Italy near Milan
Posts: 4,492
Send a message via Skype™ to msbarsi
Quote:
Originally Posted by 1992300SL View Post
where is the maf?? do you have any pics of it, im wondering if i would need to clean mine. thanks
Hi 1992300SL if my memory assists me but I might be wrong I don't think you car has a MAF.
Please correct me if I am wrong and in case I am I'm apologizing in advance.

Cheers.
__________________
I drive like I stole . . . YOURS
msbarsi is offline   Reply With Quote
Old 07-18-2008, 06:22 PM   #5 (permalink)
BenzWorld Extremist
 
wayneg's Avatar
 
Date registered: May 2006
Vehicle: 1999 SL500 Sport, Black Opal Pearl, Helios Leather, Pano roof, AMG Aero2 18"Split Rims, Rear Seats
Location: Ex London now Perth West Australia
Posts: 1,019
This is a great DIY post from another forum, I presume it will relate to our cars although the the Maf is located in another spot on our engines

http://www.benzworld.org/forums/w210...-cleaning.html
__________________
1999 SL500 Sport
wayneg is offline   Reply With Quote
Old 07-18-2008, 06:52 PM   #6 (permalink)
Lifetime Premium Member
 
Musikmann's Avatar
 
Date registered: May 2006
Vehicle: 2001 E320 - Brilliant Silver/Ash: 104,000+
Location: West Virginia, USA
Posts: 17,193
Lifetime Premium Member
wayneg is correct. My hangout is on the W210 forum and there are a lot of owners there who have gotten good results from cleaning theirs. As you'll notice from the DIY, there is a specific cleaner for them. Other things might work, but I'd advise the one recommended in our Sticky.
__________________
Mercedes Benz - Das beste oder nichts!
Musikmann is offline   Reply With Quote
Old 07-19-2008, 05:45 AM   #7 (permalink)
BenzWorld Elite
 
chriswufgator's Avatar
 
Date registered: Oct 2007
Vehicle: MB SL600, MB 380SE, Suzuki Grand Vitara, 38' Chris-Craft, Volvo V70XC, and my own two feet...
Location: Florida
Posts: 4,132
Send a message via AIM to chriswufgator
CRC Mass Air Flow cleaner is the commercial product, and it worked well when I used it.

They don't give you the formula on the can, but I'd be willing to bet it's probably just re-packaged electrical contact cleaner.
__________________
"Veni, Vidi, volo in domum redire." (I came, I saw, I want to go home.)
chriswufgator is offline   Reply With Quote
Old 07-21-2008, 05:07 AM   #8 (permalink)
BenzWorld Member
 
Date registered: Jan 2008
Vehicle: SL 60 1998
Location: Somerset U.K.
Posts: 268
BEWARE some electrical contact cleaners can damage plastic - Servisol for one. Always test before use.
I have had some switches lock up solid after some cleaners.
__________________
1998 SL 60
1991 SL 500 (sold)
nt-j is offline   Reply With Quote
Old 07-21-2008, 07:01 AM   #9 (permalink)
BenzWorld Senior Member
 
Date registered: Jan 2007
Posts: 450
If you decide to go the replacement route, which I did because I had a hard failure code, AutohausAZ has them for $265 and free shipping for genuine German-made in the yellow box. I'm told that you need to avoid the ones made in South Africa that come in a gray box.
__________________
Chuck Taylor
Falls Church VA
1996 SL500
1966 230SL
1966 200 Fintail
ctaylor738 is offline   Reply With Quote
Old 07-21-2008, 09:55 AM   #10 (permalink)
BenzWorld Member
 
agopsill's Avatar
 
Date registered: Dec 2007
Vehicle: 1999 SL500 Sport 1986 560SL 1999 M3 convertible
Location: enterprise florida
Posts: 118
I got my new MAF on ebay, I think I paid $81 plus $15 shipping.
The seller was in Davie, Florida.
agopsill is offline   Reply With Quote
Reply

  Mercedes-Benz Forum > Mercedes-Benz Roadster Forums > R129 SL Class

Bookmarks



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Topic Author Forum Replies Last Post
P0170 Mass Air Flow (MAF) Sensor Cleaning schilder71 W203 C-Class 15 05-28-2010 04:41 PM
Mass Air Flow Sensor Anekhomen General Mercedes-Benz 2 06-08-2009 06:03 PM
Mass Air Flow Sensor schmora15 For Sale/Wanted/Trade/Giveaway 0 01-15-2009 08:53 AM
Cleaning the MAF Sensor Mass Air Flow Sensor Paul Mellerowicz W210 E-Class 9 09-07-2007 04:32 AM
Mass Air Flow Sensor rbbiggs W210 E-Class 10 02-15-2007 11:23 AM


All times are GMT -7. The time now is 02:26 AM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.1

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.