06-16-2015, 01:22 PM
Last edit by: IB Advertising
See related guides and technical advice from our community experts:
Browse all: Air Intake and Exhaust Guides
- Mercedes Benz C Class How to Clean MAF Sensor and Throttle Body
Step by step instructions for do-it-yourself repairs
Browse all: Air Intake and Exhaust Guides
Maf and throttle body clean w203 m112
07-31-2013, 01:49 PM
#26
Junior Member
Join Date: Jul 2011
Posts: 57
Likes: 0
Received 0 Likes
on
0 Posts
2006 C230 & 2002 C230
07-31-2013, 05:51 PM
#27
Senior Member
Thread Starter
Join Date: Sep 2011
Posts: 305
Likes: 0
Received 0 Likes
on
0 Posts
2001 C320 Automatic
okay so the K&N is definitely not responsible for this because i had it on for 4k miles. I cleaned the maf and throttle body for fun. I always do preventative maintenance. when i installed the k&N filters the oil was not even visible nor dripping . I have more k&N oil on my bbk for my mustang nothing happens. I personally believe i gotta take it apart and check the gear in the throttle body. I will inspect the vacuum hoses before hand. Pelican Parts do you have a guide for replacing vacuum lines.
07-31-2013, 06:11 PM
#28
SPONSOR
Chuckle
If you use (minimum possible) less oil than required:
* The sensor might survive years
* The filter will in mild driving conditions (2% by population) need monthly cleaning
* In average driving conditions it will need weekly cleaning
* Most HARSH (dust, sand, track) driving conditions require daily filter cleaning
* Failure to vigorously maintain the K&N filter, and you may as well drive with NO filter.
IMO: For the cost / hassle / worry, may as well use a top quality stock filter
FYI:
As a professional mechanic performing PPI = Pre Purchase Inspections.
The (durability) value of any vehicle drops significantly when K&N filters are found.
whunter@pelicanparts.com
.
07-31-2013, 07:07 PM
#29
Senior Member
Thread Starter
Join Date: Sep 2011
Posts: 305
Likes: 0
Received 0 Likes
on
0 Posts
2001 C320 Automatic
Look pelican I followed your instructions for the throttle body and maf and air filter , no where in the guide did I see security torx mentioned.. The maf worked before for a couple thousand miles. I cleaned it drove for 200 miles then this happens. Its not the air filter its something small
Last edited by Ivanrad; 07-31-2013 at 07:12 PM.
07-31-2013, 07:08 PM
#30
Junior Member
Join Date: Jul 2011
Posts: 57
Likes: 0
Received 0 Likes
on
0 Posts
2006 C230 & 2002 C230
How does K&N (or any other such type) filter can wreck the MAF even when little oil is used?
What is the mechanism of the wrecking or damaging? I just can't imagine how.
If K&F fitler is not maintained, say too much dirted, how would it be considered driving with NO filter? What's the mechanism or logic behind that?
BTW, I have OEM paper type filters (2) in my C230.
07-31-2013, 07:17 PM
#31
Super Moderator
Listen to Pelican Parts.
Just some dirt getting through the filter can damage a MAF. Stick to good OE filtration. Benz filters are excellent.
This car is stumbling but there are no misfire codes or O2 sensor codes.
You say there are no air leaks on the inlet system, airbox & MAF
You need to check all vacuum pipework & breathers for leaks. If you did not disturb them it is unlikely.
You are getting MAF codes which is why I think the MAF is on it's way out.
You could have more than one thing wrong.
Here is a sad tail of MAF cleaning that lead us on a merry dance. This MAF failed after cleaning.
https://mbworld.org/forums/c-class-w...ht=cleaned+MAF
Just some dirt getting through the filter can damage a MAF. Stick to good OE filtration. Benz filters are excellent.
This car is stumbling but there are no misfire codes or O2 sensor codes.
You say there are no air leaks on the inlet system, airbox & MAF
You need to check all vacuum pipework & breathers for leaks. If you did not disturb them it is unlikely.
You are getting MAF codes which is why I think the MAF is on it's way out.
You could have more than one thing wrong.
Here is a sad tail of MAF cleaning that lead us on a merry dance. This MAF failed after cleaning.
https://mbworld.org/forums/c-class-w...ht=cleaned+MAF
07-31-2013, 07:53 PM
#32
Senior Member
Thread Starter
Join Date: Sep 2011
Posts: 305
Likes: 0
Received 0 Likes
on
0 Posts
2001 C320 Automatic
Listen to Pelican Parts.
Just some dirt getting through the filter can damage a MAF. Stick to good OE filtration. Benz filters are excellent.
This car is stumbling but there are no misfire codes or O2 sensor codes.
You say there are no air leaks on the inlet system, airbox & MAF
You need to check all vacuum pipework & breathers for leaks. If you did not disturb them it is unlikely.
You are getting MAF codes which is why I think the MAF is on it's way out.
You could have more than one thing wrong.
Here is a sad tail of MAF cleaning that lead us on a merry dance. This MAF failed after cleaning.
https://mbworld.org/forums/c-class-w...ht=cleaned+MAF
Just some dirt getting through the filter can damage a MAF. Stick to good OE filtration. Benz filters are excellent.
This car is stumbling but there are no misfire codes or O2 sensor codes.
You say there are no air leaks on the inlet system, airbox & MAF
You need to check all vacuum pipework & breathers for leaks. If you did not disturb them it is unlikely.
You are getting MAF codes which is why I think the MAF is on it's way out.
You could have more than one thing wrong.
Here is a sad tail of MAF cleaning that lead us on a merry dance. This MAF failed after cleaning.
https://mbworld.org/forums/c-class-w...ht=cleaned+MAF
could I please have the diagram of the vaccum lines .
07-31-2013, 10:49 PM
#34
Senior Member
Thread Starter
Join Date: Sep 2011
Posts: 305
Likes: 0
Received 0 Likes
on
0 Posts
2001 C320 Automatic
First of all I disconnected my maf and same thing one jerk aka wiggle in idle though the rpm gauge does not move at all. Maybe my motor mounts are going ? I think its got to be a hose will update later
* Restarted her 15 mins ago and i feel as if the car is shifting with the direction of the cylinders. this makes me think its motor mounts.
* the maf is disconnected while this is happening so its not the maf
* Something popped off like a vacuum tube that's it or motor mounts
* Restarted her 15 mins ago and i feel as if the car is shifting with the direction of the cylinders. this makes me think its motor mounts.
* the maf is disconnected while this is happening so its not the maf
* Something popped off like a vacuum tube that's it or motor mounts
Last edited by Ivanrad; 07-31-2013 at 11:17 PM.
08-01-2013, 06:58 AM
#35
Super Moderator
OK ~ well check for leaks in all pipework & check all 3 mounts.
Cancel codes & drive the car to see what comes back & report here.
Cancel codes & drive the car to see what comes back & report here.
08-01-2013, 03:40 PM
#36
Junior Member
Join Date: Jul 2011
Posts: 57
Likes: 0
Received 0 Likes
on
0 Posts
2006 C230 & 2002 C230
What's the mechanism of the failure between the MAF sensor and the CRC cleaner?
If cleaned as instruted, NOTHING touches the sensor other than the CRC cleaner liquid stream of the sensor. Is there some kind of chemical reaction happening begtween the CRC cleaner and the MB Bosch MAF sensor?
I've used CRC MAF Sensor cleaner on following my family/friends cars over the years as a "routine" maintenance:
MB C230
MB SLK280
Hyundai Accent
Hyundai Sonata
Toyota Celica
Toyota Camry
VW Golf
Acura RSX
I did NOT wreck any of the MAF sensors by cleaning them and some their MAF sensors are Bosch brand that MB uses. In fact, all of them drove MUCH better after cleaning,
, way better throttle response, except the Accent. The MAF was bad BEFORE cleaning. So the cleaning didn't do any good on that car. It was just an attempt.
08-01-2013, 03:47 PM
#37
Super Moderator
The bulb on the MAF can only take so many heat & cool cycles. Sometimes the cold created by evapouration of the MAF cleaner is enough to break the camels back & cause a failure.
If it causes a failure that MAF would probably have failed in the next 10K miles anyway.
As I said above. Old MAF's often fail when cleaned.
EDIT: The worst thing you can do is spray MAF cleaner on a hot MAF.
If it causes a failure that MAF would probably have failed in the next 10K miles anyway.
As I said above. Old MAF's often fail when cleaned.
EDIT: The worst thing you can do is spray MAF cleaner on a hot MAF.
Last edited by Glyn M Ruck; 08-01-2013 at 03:49 PM.
08-03-2013, 12:18 PM
#38
Senior Member
Thread Starter
Join Date: Sep 2011
Posts: 305
Likes: 0
Received 0 Likes
on
0 Posts
2001 C320 Automatic
The bulb on the MAF can only take so many heat & cool cycles. Sometimes the cold created by evapouration of the MAF cleaner is enough to break the camels back & cause a failure.
If it causes a failure that MAF would probably have failed in the next 10K miles anyway.
As I said above. Old MAF's often fail when cleaned.
EDIT: The worst thing you can do is spray MAF cleaner on a hot MAF.
If it causes a failure that MAF would probably have failed in the next 10K miles anyway.
As I said above. Old MAF's often fail when cleaned.
EDIT: The worst thing you can do is spray MAF cleaner on a hot MAF.
Oh yeaah lets just shove the throttle body completely behind the block . Oh even better lets give people less then an inch to move their hands around.
anyway that rant is over.
Can I please have a picture of the vaccum lines on a jpeg of the real engine. I can't even tell if that drawing is from a kompressor or my engine. Glynn I owe u the world for your help. I just need some pictures and more guidance on inspecting what is wrong
08-03-2013, 07:16 PM
#39
Super Moderator
I have no pictures of vacuum pipes & breathers. It would take many to try & cover them & many are hidden. Check all rubber hoses under the hood. I no longer have my M112 powered car to take pics of. 240 & 320 have same hose layout.
Please also clean the MAF plug with switch cleaner.
Good luck!
How many miles on your 'Stang's MAF?
Sorry ~ Benz cars are not American crude iron. Rant over
Please also clean the MAF plug with switch cleaner.
Good luck!
How many miles on your 'Stang's MAF?
Sorry ~ Benz cars are not American crude iron. Rant over
08-05-2013, 02:13 AM
#40
Senior Member
Thread Starter
Join Date: Sep 2011
Posts: 305
Likes: 0
Received 0 Likes
on
0 Posts
2001 C320 Automatic
nvm on my stang. i figured out what i did wrong now i am assuming but. i remember tightening the throttle body and i might have just tightened it to much , what damage is this going to cause...
08-05-2013, 03:02 AM
#41
Super Moderator
Do you think you stripped something or broke something?? The crucial thing is did you cause an air leak.
08-05-2013, 09:19 AM
#42
Senior Member
Thread Starter
Join Date: Sep 2011
Posts: 305
Likes: 0
Received 0 Likes
on
0 Posts
2001 C320 Automatic
Nope never whats the damage I have caused to it. I also never got to take apart the elbow since it would not come off
Last edited by Ivanrad; 08-05-2013 at 09:48 AM.
08-05-2013, 12:26 PM
#43
Senior Member
Thread Starter
Join Date: Sep 2011
Posts: 305
Likes: 0
Received 0 Likes
on
0 Posts
2001 C320 Automatic
*update Cleaned all connections with switch cleaner crc.
Checked as many hoses as i could see i used my mobile phone. i still cant identify which hoses are part of the vaccumm.
I took apart everything. covered the plenum with plastic bags till i can figure this out. when i shake the throttle body lightly i hear a click like something is falling into place. shouldnt everything be solid?
the elbow with the maf in it is slightly shaky. i was wondering if i could seal that better.
i didnt really overtighten the throttle body because it was easy to remove. what is my next step?
also the plenum to the throttle body usually has a gasket.. i guess this gasket is gone and i need a new one?
should i remove the plenum and just clean it?
where in the world is the CPS?
Checked as many hoses as i could see i used my mobile phone. i still cant identify which hoses are part of the vaccumm.
I took apart everything. covered the plenum with plastic bags till i can figure this out. when i shake the throttle body lightly i hear a click like something is falling into place. shouldnt everything be solid?
the elbow with the maf in it is slightly shaky. i was wondering if i could seal that better.
i didnt really overtighten the throttle body because it was easy to remove. what is my next step?
also the plenum to the throttle body usually has a gasket.. i guess this gasket is gone and i need a new one?
should i remove the plenum and just clean it?
where in the world is the CPS?
08-09-2013, 01:02 AM
#45
Senior Member
Thread Starter
Join Date: Sep 2011
Posts: 305
Likes: 0
Received 0 Likes
on
0 Posts
2001 C320 Automatic
well. installed the gasket today pretty sure i got the entire old gasket out and inserted the new gasket. Jiggle in the idle still exists got a mercedes mobile mechanic on the way here tommorow wish me luck.
I double checked the install and i don't hear a vacuum link
any tips will be helpful. its not the maf because i disconnected the maf and still the same sound
I double checked the install and i don't hear a vacuum link
any tips will be helpful. its not the maf because i disconnected the maf and still the same sound
08-09-2013, 09:14 AM
#46
Super Moderator
The CPS is at the rear of the engine below the LHS cylinder bank looking from the drivers seat.
When you cleaned the throttle body did you clean the actuator properly as shown in PA Pete's link?
08-09-2013, 02:13 PM
#47
Senior Member
Thread Starter
Join Date: Sep 2011
Posts: 305
Likes: 0
Received 0 Likes
on
0 Posts
2001 C320 Automatic
do you mean to remove the flap inside the throttle body and clean it? or take apart the throttle body electronics and clean the carbon tracks etc,
http://s8.photobucket.com/user/tause...O0026.mp4.html
video of sound
http://s8.photobucket.com/user/tause...O0026.mp4.html
video of sound
08-10-2013, 12:33 AM
#49
Senior Member
Thread Starter
Join Date: Sep 2011
Posts: 305
Likes: 0
Received 0 Likes
on
0 Posts
2001 C320 Automatic
yeah mechanic was too busy today. heres going to be here in the am. wish us luck. do you think a throttle body dissasembly and cleaning the gears and carbon tracks would be a good idea?
