Helllppppppp!!! MAF
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Member
Joined: Jun 2006
Posts: 134
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From: Quebec
Clk 55 04
Helllppppppp!!! MAF
I was driving tonight and suddenly my check engine ( engine electronics) light pops on. I had a rouggh iddle for the last 2 weeks could a broken maf sensor cause a check engine
Member
Joined: Jan 2007
Posts: 112
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From: Anaheim Hills, CA
CLK430, SC430, RX330
Yep...could very well be the MAF.
If it is the MAF sensor here's a good set of instructions to follow for cleaning it...
http://www.panchogun.com/FVWebPhotos...-MAF-5x100.jpg
Cleaning it didn't really work for me so I just replaced it.. Got a new Bosch MAF sensor (insert only/ not the entire plastic cylinder) off ebay for about $95. The stealership will usually get you for at least twice as much.
If you buy from ebay make sure the sensor is new and not just a cleaned off used one. Also make sure it is Bosch instead of a cheap imitation.
Pull the codes on your car to make sure the MAF is actually the problem. When mine had a bad MAF sensor on it, the code was P0170 and P0173 (Fuel trim malfunction in bank 1 and bank 2).
Good luck. Hope that helps.
If it is the MAF sensor here's a good set of instructions to follow for cleaning it...
http://www.panchogun.com/FVWebPhotos...-MAF-5x100.jpg
Cleaning it didn't really work for me so I just replaced it.. Got a new Bosch MAF sensor (insert only/ not the entire plastic cylinder) off ebay for about $95. The stealership will usually get you for at least twice as much.
If you buy from ebay make sure the sensor is new and not just a cleaned off used one. Also make sure it is Bosch instead of a cheap imitation.
Pull the codes on your car to make sure the MAF is actually the problem. When mine had a bad MAF sensor on it, the code was P0170 and P0173 (Fuel trim malfunction in bank 1 and bank 2).
Good luck. Hope that helps.
Thread Starter
Member
Joined: Jun 2006
Posts: 134
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From: Quebec
Clk 55 04
I scanned it today it showed P0170 so we cleared it and cleaned the maf. The check engine didnt poped again. is that the right procedure or clearing the codes before cleaning it was a mistake?
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Joined: Jan 2007
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From: Anaheim Hills, CA
CLK430, SC430, RX330
How's your idle now? After I cleaned my MAF, mine was smooth for a couple of weeks and then it got really bad. Started to be really sluggish on take-off.
After I cleared the code, it took about 100-200 miles for the code to reappear after cleaning it (btw no check engine eventhough the p0170 code reappeared when scanned).
Then I replaced the MAF insert and the car runs like new... I almost forgot how smooth it was supposed to run. I think it was fine what you did with clearing the code then cleaning the MAF or vice versa. Either way, you have to clear the code to see if it pops up again (I also pulled the negative terminal of the battery for a little bit to get the system to reset and gather new data). Did the cleaning work for you? It wasn't a permanent fix for mine, but the new MAF was well worth it.
After I cleared the code, it took about 100-200 miles for the code to reappear after cleaning it (btw no check engine eventhough the p0170 code reappeared when scanned).
Then I replaced the MAF insert and the car runs like new... I almost forgot how smooth it was supposed to run. I think it was fine what you did with clearing the code then cleaning the MAF or vice versa. Either way, you have to clear the code to see if it pops up again (I also pulled the negative terminal of the battery for a little bit to get the system to reset and gather new data). Did the cleaning work for you? It wasn't a permanent fix for mine, but the new MAF was well worth it.
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2000 Silver CLK430
P.S. - if you put a question mark after your question, people will know that you have a question...otherwise you're not going to get much help.
Thread Starter
Member
Joined: Jun 2006
Posts: 134
Likes: 0
From: Quebec
Clk 55 04
Update : Check engine never came back , but I still have a rough idle and the engine shakes ( not engine mouts changed em last week). So to change de maf do I have to buy the air mass sensor insert or the mass meter sensor witch is the cylender part?????
http://search.ebay.com/search/search...air&category0=
http://search.ebay.com/search/search...air&category0=
Member
Joined: Jan 2007
Posts: 112
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From: Anaheim Hills, CA
CLK430, SC430, RX330
Here are a couple links to some active ebay auctions that you might be interested in.
This one is the entire MAF sensor:
http://cgi.ebay.com/ebaymotors/MERCE...spagenameZWDVW
This one is just the insert: (you will need a torx wrench to install this insert)
http://cgi.ebay.com/ebaymotors/MASS-...spagenameZWDVW
This one is the entire MAF sensor:
http://cgi.ebay.com/ebaymotors/MERCE...spagenameZWDVW
This one is just the insert: (you will need a torx wrench to install this insert)
http://cgi.ebay.com/ebaymotors/MASS-...spagenameZWDVW
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Member
Joined: Jan 2007
Posts: 112
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From: Anaheim Hills, CA
CLK430, SC430, RX330
I ended up purchasing my MAF insert from the seller in the second link that I just posted. It was new in box, well packaged, and was shipped quickly, but if you can get the entire MAF cheaper, it will save you the trouble of buying the torx wrench that you will need to swap out the insert (unless you already have one).
Good Luck
Good Luck
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