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Old 29-06-2009, 09:59 AM   #16
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Well I had a right wasted weekend scratching my head trying to remove my airbox,to check the vacuum pipes very close to using a hammer on it! my patients was running thin how the bloody hell do you get the air box off a w203 c18 coupe
the best I can do is remove the air box cover then remove the filter remove two torxs top of the MAF that connect to the airbox.
No idea how you get to the bottom one out, I can only see one torx that may hold the airbox on and that's in a plastic tube on the the Maf housing
is it really that difficult, can anyone help.

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Old 29-06-2009, 10:55 AM   #17
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Havent a clue! but on mine its held onto the inner wing by rubber grommets and to remove you simply give it a good tug, when refitting grease the rubbers makes it easier next time.


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Old 29-06-2009, 09:45 PM   #18
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Thanks calm


You have Just saved me a fortune as my vacum pipe was split clean in halve

happy days!
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Old 29-06-2009, 09:52 PM   #19
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Hmm, any chance this would apply to a 208? Mine is suffering from poor acceleration (like none at all if I floor the accelerator, nearly got me into serious trouble when overtaking yeasterday ) and rough idle .... but this is only when I've tried to accelerate hard. If I'm gentle, I don't have any problems and can cruise at 80-90 OK.

All ready to replace the MAF unless this could be a similar problem??
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Old 13-09-2010, 02:41 PM   #20
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could VRAJA say how he got on - his symptoms are exactly the same as mine !!
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Old 13-09-2010, 03:17 PM   #21
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Quote:
Originally Posted by philsas View Post
could VRAJA say how he got on - his symptoms are exactly the same as mine !!
Probably not, he posted that in June 2009, and has not been on here since March this year.

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Old 11-01-2012, 04:46 PM   #22
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Sorry to follow up on this, Ive seen there are threads else where but this seemed closer to the issue I have.

I replaced the MAF after the engine light came on and the code said MAF error. Now I get the error wheres its too rich.

I thought I'd have a look to see if I could find this vacuum pipe people here have been referring to. I have a 2001 W203 C200K

I just cant find it. I removed the entire airfilter assembly and looked for every pipe there could be that looked as though it could be the culprit - nowt there.





I also found this vacuum pipe hanging free, is that right?







Though I did find a loose pipe on the back left hand side at the final air intake area before the inlet manifold. See pics. red arrow.





Its now connected!! Lets see if the error code comes back! Thankfully I only paid 40 for the MAF from ebay and I still have the old one

Last edited by tony_1170; 11-01-2012 at 04:59 PM.
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Old 11-01-2012, 10:03 PM   #23
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I have had lots of problems with eml lights on, (111 engine) throttle body clean has cured them.
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Old 14-01-2012, 09:08 PM   #24
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Quote:
Originally Posted by tony_1170
Sorry to follow up on this, Ive seen there are threads else where but this seemed closer to the issue I have.

I replaced the MAF after the engine light came on and the code said MAF error. Now I get the error wheres its too rich.

I thought I'd have a look to see if I could find this vacuum pipe people here have been referring to. I have a 2001 W203 C200K

I just cant find it. I removed the entire airfilter assembly and looked for every pipe there could be that looked as though it could be the culprit - nowt there.

I also found this vacuum pipe hanging free, is that right?

Though I did find a loose pipe on the back left hand side at the final air intake area before the inlet manifold. See pics. red arrow.

Its now connected!! Lets see if the error code comes back! Thankfully I only paid 40 for the MAF from ebay and I still have the old one
Tony, your m111 is screwed.The missing part is the ait filter box.Meaning your car breathing dirty air!
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Old 14-01-2012, 09:11 PM   #25
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Buy one ASAP from a scrapyard
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Old 15-01-2012, 12:45 AM   #26
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Stay away from w203 c class mercs !!!!!!!!!!!!!
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Old 15-01-2012, 11:29 AM   #27
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Stay away from w203 c class mercs !!!!!!!!!!!!!
You wrong mate!Stay away from any car serviced by an idiot.W203 and M111 are very reliable.If you treat it right.
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Old 15-01-2012, 11:29 AM   #28
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tony if you can't find one,message me
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Old 21-01-2012, 05:09 PM   #29
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Ahh, I should have worded that better - I removed the entire airfilter assembly before I took the pic - its all there

I was just trying to show that I cant find this vacuum line under the airfilter assembly that many others had mentioned.

That said, the light has just come back on again, so popping that U shaped pipe back on made no difference. So Im back to square one.

So far:
1) MAF error code, bought OEM MAF from ebay eBay - The UK's Online Marketplace

2) No MAF error, now get P0172 #1 System too Rich
  • Stripped out air filter housing, checked all pipes, found that one U pipe that had popped off, put back on, checked all pipes for leaks (well signs of wear and cracks) all fine.
  • Mileage is round town on auto box 25 / 28
  • Car has 70k
3) When doing a cold start, engibe does a little judder - but settles quickly, eg 3 seconds

4) never stalls or has issues

Ive read posts on the o2 sensor.. not sure if I could do that on my own..
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Old 21-01-2012, 05:56 PM   #30
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It could be the MAF still as it is not an original Bosch one, from your link.
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