How do I clean the Mass Airflow Sensor?
Thread Starter
Junior Member
Joined: Jan 2004
Posts: 38
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From: NJ
ML 320 MY2000, C320WZ MY2004.5
How do I clean the Mass Airflow Sensor?
HI All,
I've seen blogs that discuss how to clean the MAF for different cars but how do I clean it for 2000 ML320? I already removed the unit and the element with torx screw. Which part should I spray with cleaner? Other blogs talk about wires but I dont see wires in the BOSCH version.
Thanks for your help.
I've seen blogs that discuss how to clean the MAF for different cars but how do I clean it for 2000 ML320? I already removed the unit and the element with torx screw. Which part should I spray with cleaner? Other blogs talk about wires but I dont see wires in the BOSCH version.
Thanks for your help.
Almost a Member!
Joined: Jun 2006
Posts: 69
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From: West Covina,CA
2000 ML 320
I clean mine every few months (just to be safe-I have an intake on my ML) with an MAF cleaner (the CRC brand in a grey can) available from most automotive supply shops. I've never had any problems with this substance.
I hope this helps; good luck!
I hope this helps; good luck!
MBWorld Fanatic!
Joined: Jun 2003
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From: San Diego, CA & San Jose, Costa Rica & Stuttgart, Germany
1959 220S / 1979 230 G / 2002 A210 AMG / 2003 C320 SC / 2004.5 C320 SS / 2005 ML350 SE / 2008 smart
can someone post pictures of the procedure.
What is required to be removed, how do you do it, and
show how to actually clean the MAF sensor.
What is required to be removed, how do you do it, and
show how to actually clean the MAF sensor.
Newbie
Joined: Jul 2007
Posts: 8
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From: England
1999 ML 320
Try this address for pictures of how to clean the MAF
http://forums.mercedesclub.org.uk/sh...ad.php?t=18298
http://forums.mercedesclub.org.uk/sh...ad.php?t=18298
Super Member
Joined: Aug 2003
Posts: 626
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From: Los Angeles, CA
'03 E55 (My Daily), '01 ML 320 (Wifey), Twin Turbo '69 Camaro (In Progess)
You need to remove the MAF fom the car to clean the unit. It is important to unplug it from the harness before starting to clean it. Once you remove the engine cover, it is very accessible and has an easy to remove clip that holds it in place. Once rmeoved, you can see the small wire and resistor that need to be cleaned with the CRC spray. Spray it about 12-15 times in short bursts and give it time to fully dry before plugging it back in. Then reinstall the engine cover and you're set....
Super Member
Joined: Aug 2003
Posts: 626
Likes: 3
From: Los Angeles, CA
'03 E55 (My Daily), '01 ML 320 (Wifey), Twin Turbo '69 Camaro (In Progess)
You need to remove the MAF fom the car to clean the unit. It is important to unplug it from the harness before starting to clean it. Once you remove the engine cover, it is very accessible and has an easy to remove clip that holds it in place. Once removed, you can see the small wire and resistor that need to be cleaned inside the MAf housing. Spray it about 12-15 times in short bursts and give it time to fully dry before plugging it back in. Then reinstall the engine cover and you're set....
MBWorld Fanatic!
Joined: Jan 2003
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From: Germantown, MD
S550, R350, GL550, ML63 AMG
I used the CRC MAF cleaner on my ML. You need a security bit torx to remove the MAF from the housing in order to clean it.
The engine light went off after about 1 mile of driving and hasn't been back since. Car doesn't run sluggish anymore too. I definitely recommend using thhis before paying $100-$250 for a new MAF.
The engine light went off after about 1 mile of driving and hasn't been back since. Car doesn't run sluggish anymore too. I definitely recommend using thhis before paying $100-$250 for a new MAF.
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Super Member
Joined: Aug 2003
Posts: 626
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From: Los Angeles, CA
'03 E55 (My Daily), '01 ML 320 (Wifey), Twin Turbo '69 Camaro (In Progess)
When I cleaned my MAF, I didn't take the sensor off of the MAF housing as I didn't have the security torx sockets. It probably is the better way to clean it, but mine has worked flawelessly since the cleaning.
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MBWorld Fanatic!
Joined: Jan 2003
Posts: 1,338
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From: Germantown, MD
S550, R350, GL550, ML63 AMG
Cool. If you got it to work without removing it that's great. I originally did it that way but the engine light came back on after a couple days. Checked the error code and it was the MAF again.
Seems that there are some components/sensors that you really can't reach without taking it out of the housing.
Seems that there are some components/sensors that you really can't reach without taking it out of the housing.
