sleepyheadzzz

i was driving today and at a red light...then i feel the engine hesitate
and the engine shuts off...and ALL the warning lights on my dash light up!! i had to restart the car then it worked fine...

my car has been hesitating ever since i installed the K&N air filters a year ago...
i think it might be the MAF

anybody with this problem???

dynomite05

If you left the K&N's in, your maf is probably shot.

M-bENZ

take it out and clean it w/ CRC cleaner...if not help check the CPS

Andy

Kevwood

K&N filters don't have the nick-name 'Gravel-Guards' without reason. They flow a heck of a lot of air but do a piis poor job at filtering. After using a K&N cone filter for 6 months back in Canada, the inside of the air intake tube was black as was the intake manifold and MAF. I have never used them daily after that, only for the track or race nights.

+1 with Andy, take the MAF out and clean it with no-residue electrical contact cleaner and go back to paper filters.

M-bENZ

I heard bad , good about K&N filters but I personally dont have any problem with K&N ....All my family cars using K&N so idk.

Andy

Kevwood

All you have to do is take the MAF unit out, clean it up spotless and pop it back in - then check it in 6 months, it and the casing will be covered in crud. Do the same with a paper filter and the difference is night and day. If you're going to use them and want to protect the engine, keep them clean and use minimal amounts of oil. For the extra 1 or 2 peak HP vs. by-pass contaminents I've decided not to use them daily.

If you're happy with them (as I was years ago), good on you, just keep them clean.

M-bENZ

I dont drive daily thats Y lolz. The car is the weekend toy or even if its a daily drive I can take it out and clean it every six months. Its not that hard once u done it.

Andy

Kevwood

That puts a different spin on things, I thought it was your daily! Do you use the K&N oil? You can get it in a spray, very easy to control vs. the 'drip'.

dynomite05

I had to replace my maf a while back because of the K&Ns. I switched to green filters and haven't had a problem.

mis3

How is the Green Air Filter as compared to stock filter?

My car hesitated at red lights before and it was fixed by replacing the MAF. I did not know that the MAF should be cleaned every few months. Is the MAF easily accessed? Any instructions here? What do you use to clean them?

M-bENZ

I just found my old pics...this is when i cleaned my CLK320 maf but that was a long time ago. I did clean the CLK500 MAF one time when I first bought the car.



Andy

M-bENZ

https://mbworld.org/forums/clk55-amg...me-advice.html

https://mbworld.org/forums/clk55-amg...or-online.html

not sure it will help but its all about cps and maf.

Andy

dynomite05

What is the story behind the green filters?

M-bENZ

hey no offense at all Wes but let me try to find the thread about that. It was all about the green filter is melted in his airbox...you heard it right its melted. See if i can find it.

Andy

dynomite05

None taken. There are always two sides to a coin, but this is the first I hear of this. I'm going to double check now...lol....Have you heard anything about the BMC's

mark1281

I have not had any issues with my K&N filters, but when I clean them I do not put much of any oil spray on the side that goes to the MAF. On the intake side I put enough oil though. So the rear is not very oiled but then I make sure to let it dry for atleast an hour before I reinstall them. So after 15k miles I still have no issues.

On the other hand I did have my CPS replaced this weekend since it made my car stall for no reason.... Thank you CPO warranty.

I have heard both things about K&N filters since they are heavily oiled from the factory. I was told by the shop foreman at the dealer that you should clean the filter and not apply as much oil even with a brand new filter to keep from having this problem. so I followed his advice and my car is running like a champ!

Kevwood

There was an initial problem with the rubber compound used for the edge seal/gasket with the Green filters but it's been rectified. I read about it quite a while back on a few different forums.

M-bENZ

at least you know what im talking about ehehe....but anyway, like Wes said there are always two side to a coin so K&N or green or BMC OP just have to pick one.

Andy

dynomite05

Yup, just have to pick one and see how it works.

midnight AMG

damn foo =(

sleepyheadzzz

took off the MAF and sprayed with some MAF cleaner and the car is silky smooth now!!! no more hesitating...shifting is so much smoother

feels like a completely new car!!!
took me freakin 2 hours to get the MAF sensory loose tho

M-bENZ

but that 2hrs definitely worth it right ? $3.50 can fix the car. lol

Andy

dynomite05

Good to hear. I like the new sig

enioclk430

our clk 430 did same had it scanned crank trigger bad. good luck

Kevwood

Good stuff!