Mercedes Vito Problems

The Gride · 05-10-2012 10:46PM #1

Hi All,

I have a 2007 Mercedes Vito 111cdi that has been seriously down in power for a while. Took it to a small garage and he plugged it in, He said the air flow meter was gone so bought a used one with a 3 month guarantee and fitted it. No difference. Took the van to a bigger garage and they said the same so bought a brand new one for €400 and still no better if anything it got worse. In the meantime we have :

checked egr, dropped exhaust to see if blocked, checked air cooler pipes, checked shaft in egr valve, got it plugged in twice and its saying air flow meter is wrong.

I am pulling my hair out at this stage. Any help really appreciated.

crosshair1 · 05-10-2012 10:51PM

Do you have a fault code for the air flow meter fault?

colm_mcm · 05-10-2012 10:52PM

Bring it to a main dealer, theyll probably have seen the same thing before.

ltdslipdiff · 05-10-2012 10:57PM

Is it possible its a wire going to the airflow meter that has broken?

The Gride · 05-10-2012 10:58PM

crosshair1 wrote: »

Do you have a fault code for the air flow meter fault?

Thanks for you interest. I don't have it now but can get it tomorrow. The larger garage also checked the power supply in the loom and that was reading ok.

The Gride · 05-10-2012 11:00PM

ltdslipdiff wrote: »

Is it possible its a wire going to the airflow meter that has broken?

Thanks for your interest but as I have just said all the wiring has been fully checked and appears ok.

The Gride · 05-10-2012 11:03PM

colm_mcm wrote: »

Bring it to a main dealer, theyll probably have seen the same thing before.

I know a mechanic in a main dealership and he said that the only problems that they get is the air flow meter and the ignitions. I have a new air flow meter and my ignition is fine.

martyc5674 · 05-10-2012 11:30PM

Has it a map sensor??(manifold air pressure) common enough for the map and the maf to blame one another.
Marty.

The Gride · 05-10-2012 11:37PM

martyc5674 wrote: »

Has it a map sensor??(manifold air pressure) common enough for the map and the maf to blame one another.
Marty.

Hi, Yes, That was replaced already too. Thanks

martyc5674 · 05-10-2012 11:52PM

The Gride wrote: »

martyc5674 wrote: »

Has it a map sensor??(manifold air pressure) common enough for the map and the maf to blame one another.
Marty.

Hi, Yes, That was replaced already too. Thanks

Air filter and fuel filter been checked??

The Gride · 06-10-2012 12:02AM

martyc5674 wrote: »

Air filter and fuel filter been checked??

Yes. all done very recently and was going fine. Lent it to a friend to do a short run and he brought it back "down in power".

darragh o meara · 06-10-2012 02:55AM

Air intake temp sensor gives problems in these and would cause similar sympthoms. Your best to get it plugged in at a main dealer as the Mercedes Star diagnostic will run diagnostics on wiring too and will find problems other diagnostic wont. It's not the ignition as if that goes it wont start !!

The Gride · 06-10-2012 05:49PM

darragh o meara wrote: »

Air intake temp sensor gives problems in these and would cause similar sympthoms. Your best to get it plugged in at a main dealer as the Mercedes Star diagnostic will run diagnostics on wiring too and will find problems other diagnostic wont. It's not the ignition as if that goes it wont start !!

Thanks. Will try that so.

darragh o meara · 06-10-2012 06:59PM

The Gride wrote: »

Thanks. Will try that so.

It's a cheap enough part but a bit tricky to get too.

ninja mike · 07-10-2012 08:35PM

Mate had similar problem turned out to be a split in a pipe coming off the bottom of the turbo

The Gride · 07-10-2012 10:09PM

ninja mike wrote: »

Mate had similar problem turned out to be a split in a pipe coming off the bottom of the turbo

Thanks, Pipes were fully checked and are ok. I was told about this problem already but thanks for your help.

The Gride · 09-10-2012 04:31PM

Brought to main dealer today. It was the air flow meter after all. They just cleared all the faults and the power was restored straight away. My own guy said it was the same from the begining and I bought a secondhand unit with a 3 month guarantee , obviously that unit was also faulty and the 3 month period has also expired. Never buying secondhand parts again. For what ever reason when my own guy cleared the faults it did not have the same effect as in the main dealers.

Thanks to all for any advice here. Really appreciated.

Charliehorse2 · 21-01-2013 04:23PM

Sounds like your air mass meter drift just had to be reset. Very common problem with vito's and sprinter's and can only be done with Mercedes star diagnostics software which is why your mechanic couldn't just "erase" the fault. Sorry i didn't see this earlier as i could've saved you a few bob.

The Gride · 25-01-2013 11:36AM

Charliehorse2 wrote: »

Sounds like your air mass meter drift just had to be reset. Very common problem with vito's and sprinter's and can only be done with Mercedes star diagnostics software which is why your mechanic couldn't just "erase" the fault. Sorry i didn't see this earlier as i could've saved you a few bob.

Thanks Charliehorse.

Its going well ever since so at least they got to the problem in the end.

Mercedes Vito Problems

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