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Thread: Signum air flow meter fault 2.0t

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    Default Signum air flow meter fault 2.0t

    Hi had this diagnosed by my friend with his hand held reader so have been disconnecting battery which gets rid of the eml si then carry on sometimes 50 miles another time 500 , thought it may off been heat realted but doesn't seem to be, so I've now decided to get 1 from motor factors , fuel parts 1 MAFS258 think is part number but then today eml back on so friend checked & same fault , any ideas

    It is fitted with bsr stage 1 , is that still there with disconnecting the battey

    also every now again it was flat pulling out of junctions ie as though no power but light didn't come on as thought may do , could this b possible related to boost solinoid that sits on actuator or may be map sensor

    Another thing element in original afm did like slight mucky rusty compared with new unit

    Cheers

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    What is the pcode that comes up..... Sounds like all of the symptoms of the recirculating dump valve diaphragm gone weak or split

    0-Large smile ......every time it's driven

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    Just spoke to me mate was either p1101 or p1011

    Are the recircs easy to replace or can u put a bailey DV on & just re work pipes

    Also where is best place to take aboost gauge off to see how turbo working

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    Well replaced sensors on actuator & same 1 near dipstick , and engine light back on after 25 miles varied driving afm fault, so then thought must b recirc dump valve so thought block pipe that goes to it & now get car symbol with spanner in it (electric fault ) so do pedal test & came up either 0034 or 0044 ie charge bypass vave which I've just changed , any comments

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    u need a forge t25 blanking plate for the reirc then fit dv in tb hose sound nice on a 2.0t

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    Thought this may off been necessary but nice to hear of others with possible similar problem , where best to t in the vacuum pipe just of the inlet , thanks

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    boost gauge tap in vac pipe inlet manifold

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    well on reading another thread with similar issues & it turned out the chap found his second lambda at fault so i thought well just check & found the wire taped up & clipped in & then on removal found that 1 of the white wires was broke & couple of other wires were showing , so it had either been gounded out or the metal clip it was in had chaffed through & previous owner had just taped up out the way

    so ive now replaced air charge sensors & now the 2nd postion lambda

    this part cost me £86.76 total from hereward car & truck ( local motor factors)
    part number is OZA531-GM16 ( NTK part )
    vauxhall part no . 55353269

    & just incase for the 1st postion sensor part no vauxhall = 55351836 & NTK (ngk) OZA575-GM2

    so whilst fitting disconnected battery had a cup of coffee whilst doing then finished reconnected battery , re installed BSR just incase i needed to , then started car & starts , so will drive tomorrow & c how all goes

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