A tale of 2 MAFs

Discussion in 'Engine' started by topdown, Nov 1, 2011.

  1. topdown

    topdown Active Member

    Jul 17, 2003
    1. CLK 320

    A couple of days after a service the engine response was jerky and sometimes there was no response when you accelerated , especially after Engine breaking. Checking a few posts it pointed to the MAF. Checking I found that the air cleaner assy was not sitting snuggly on the MAF housing it is a very neat fit so after seating properly it has been OK.

    2, ML 270 cdi

    Over a period of time I noticed a lot of black smoke when accelerating, this however disappeared but revs limited to 3000 and no kickdown but no warning light . This 3000 rpm limit was coupled with a less than smooth engine. It was intermittent and would disappear for days. Eventually it came back and was there most days.

    Again a search on here pointed to the MAF and of course to get the codes read. I disconnected the MAF and found that it made no difference - same 3000 limit and no kickdown. In a period where the engine was OK I disconnected the MAF and got the fault back. A quick inspection showed the MAF to be clean. However a clean with electrical cleaner to make sure and on the next drive everything was OK. Next day the fault came back. Getting the codes read was £80+ Vat so....

    Off to the dealer for anew MAF £49 +vat and after fitting the engine is smooth Revs to the limt, kicks down and seems a lot quicker than I remember

    Thanks again to all posters.
    2 people like this.
  2. Alex Crow

    Alex Crow Active Member

    Sep 30, 2011
    Super Suffolk
    S210 320cdi
    Not always, some of us will perform a quick test (reading fault codes) FOC.
    1 person likes this.
  3. Clivefa

    Clivefa Active Member

    Sep 2, 2011
    Glemsford, Suffolk.
    C220 Cdi AMG Kawasaki ZX10R
    Now that is very useful to know. Many thanks.

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.