Map sensor

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  • newsh
    S2Forum Obsessed
    • Aug 2003
    • 16226
    • Country: United Kingdom

    #16
    Originally posted by HuwSy
    Rats... ok thanks.

    After further digging about I have an oil leak and head gasket to be replaced so its off the road and in pieces now. Perhapse this was throwing everything off although yet to workout why it blames the MAP in this instance.
    Did you do a boost leak test?

    S2 Coupe 3B Project


    Ur quattro restoration

    S2 Avant

    Boost is the new rock and roll!
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    • twoqu
      S2Forum Possessed
      • Sep 2003
      • 3103

      #17
      Not saying its a false code but its unlikely to the map sensor itself and more likely to be something as simple as a kinked pipe/split hose to the map sensor. If you have a mityvac or similiar you could isolate and test the plastic pipe from the engine down to the ecu to see if it all holds up.

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      • prj
        S2Forum Zealot
        • Mar 2010
        • 6308
        • Country: Estonia

        #18
        Originally posted by HuwSy
        Rats... ok thanks.

        After further digging about I have an oil leak and head gasket to be replaced so its off the road and in pieces now. Perhapse this was throwing everything off although yet to workout why it blames the MAP in this instance.
        Because you probably have absolutely 0 boost and there is a correlation error.
        Do a leak test.

        There is a check:
        IF:
        TPS > x AND
        RPM > y AND
        MAP < z
        THEN
        Throw map fault, go in limp mode.

        You're welcome.
        http://tuner.ee - http://www.facebook.com/tuner.ee

        Comment

        • HuwSy
          S2Forum Enthusiast
          • Apr 2011
          • 181
          • Country: United Kingdom

          #19
          Well a lot of the hoses are off at the moment along with the front of the car and the top of the head etc. Although not by my doing this time as I wasn't willing to take on the head gaskett myself after how long a cam belt took me. Once it's back together with any suspect hoses replaced in the process I'm hoping it's resolved in the process. If not I'll go on a leak test route before a map replacement. Thanks

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