STUTTER AND OCCASIONAL ROUGH IDLE AFTER K&N's
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2001 CLK55 AMG
STUTTER AND OCCASIONAL ROUGH IDLE AFTER K&N's
Hello all I'm new to Mercedes. Moving from an S4 to the w208 CLK55 AMG. I recently put k&n's in and almost immediately ended up with an occasional rough idle and stutter from a stop. It runs great when moving and from a stop most of the time but on occasion when stopped it sounds almost like a car with a big cam. Any ideas?
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Newbie
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2001 CLK55 AMG
Thank you for the reply. I did not ad anything because I was aware that to much oil can damage the MAF. I just would not think that it would happen that fast. At first I thought maybe the ECU had to re calibrate or something due to the air flow difference. That would have happened by now I would think if that was the case.
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From: Gulf Coast but not Florida
GLK350, SL63 AMG
Thank you for the reply. I did not ad anything because I was aware that to much oil can damage the MAF. I just would not think that it would happen that fast. At first I thought maybe the ECU had to re calibrate or something due to the air flow difference. That would have happened by now I would think if that was the case.
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From: Chicago
2015.5 Volvo V60 Polestar
Make sure your airbox is on tightly too. But as others said, sounds like a bad MAF.
Try AFE Pro-dry S, high flow and no oil to worry about.
www.afepower.com
Try AFE Pro-dry S, high flow and no oil to worry about.
www.afepower.com
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From: Chicago
2015.5 Volvo V60 Polestar
I made the switch to afe pro-drys just so I wouldn't have to worry about reoiling them right.
I think when it comes time for the consumer to reoil is where the problem lies, if there is one.
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CLK55 AMG (W208)
Thanks for your explanation Nachtsturm 
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if you have a standard air box I'd stick with the paper/standard ones. I have a c200k up till about a week ago it had a k&n to fit the standard air box i put the k&n in about 3 months before. Soon after that the engine management light came on it started to idle rough and have flat spots throughout the rev range and some times a strong petrol smell. Spent the next 3 months chasing the problem had a new cat fitted new mas new fuel filter new plugs still had the same underlying problem and the em light was still on i didn't have much more to try so started to replace the ignition coils done the 1st one no better then it hit me I'd fit the k&n them months earlier and my car was fine before I fit it so I thought I've nothing to lose I put the standard filter back in its been running sweet since that day and I ain't seen no em light since the day I took it off!
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if you have a standard air box I'd stick with the paper/standard ones. I have a c200k up till about a week ago it had a k&n to fit the standard air box i put the k&n in about 3 months before. Soon after that the engine management light came on it started to idle rough and have flat spots throughout the rev range and some times a strong petrol smell. Spent the next 3 months chasing the problem had a new cat fitted new mas new fuel filter new plugs still had the same underlying problem and the em light was still on i didn't have much more to try so started to replace the ignition coils done the 1st one no better then it hit me I'd fit the k&n them months earlier and my car was fine before I fit it so I thought I've nothing to lose I put the standard filter back in its been running sweet since that day and I ain't seen no em light since the day I took it off!
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From: Texas
C63 507 AMG DA Car #19
I had problems with a set of pre-oiled filters, killed my mas. I'm a paper man for my clk.
Some people have NO problem what-so-ever with K&N's on their MB products... Not me.
Some people have NO problem what-so-ever with K&N's on their MB products... Not me.
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Blown 208 55 amg, 211 55 amg
We use dawn dish soap and hot water on every filter we install no matter make or model to rid oils and grease. You'd be surprised the difference it can make. the oil is on the filter to attempt to stop dust particles even more...
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2010 E550
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MBWorld Fanatic!
Joined: Nov 2009
Posts: 3,589
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From: Texas
C63 507 AMG DA Car #19
I tried to clean my faulty MAS with CRC elc cleaner.... worked for a week.... then same old problem... surging, bucking, poor idle...... etc...
Parts dot com has good deals on genunie bosch MAS..... GL>
Parts dot com has good deals on genunie bosch MAS..... GL>
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From: NY||NJ||PA
o2 CLK 55 AMG || o4 Audi A4 6SP Quattro || o7 Kawasaki Ninja ZX10R
Hi all - sorry to thread jack but will the AFE Pro-dry S high flow filter for a CLK320 fit a CLK55 AMG? The afepower.com website has no option for the CLK55 AMG only the CLK320 is listed.
Is there a part number somewhere anyone might know.
Thanks.
Is there a part number somewhere anyone might know.
Thanks.
