Map sensor Peugeot 207 gti 2007 model
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  1. #1
    AAA
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    Default Map sensor Peugeot 207 gti 2007 model

    Hi everyone,

    I would like to know how would you know if your map sensor not working??

    I unplugged the cable thatís connected to the map sensor and the engine still running??? Is this normal.
    And someone told me if the engine stops thatís mean itís still working???

    Regards
    AAA

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  2. #2
    Fellow Frogger! Bluey's Avatar
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    Quote Originally Posted by AAA View Post
    I would like to know how would you know if your map sensor not working??
    By connecting a scan tool and running a fault code check! You can also monitor the sensor values as the car is being driven.

    Disconnecting parts of electronic components while engines are running is a sure fire way to damage a component, log an unneccesary fault code or trigger limp mode. This is not the 80's when a MAP sensor was the only load source the ECU used. Now multiple sensors are used so the engine will still run. And if it's like BMW's other turbo engines, it will have more than one MAP anyway.

  3. #3
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    You can pull the sensor out, and the engine will still turn over. You have told the computer there is no boost.

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    Thats not the MAP sensor. Thats the IAT (intake air temp)
    The MAP is located on the intake manifold and you need to remove the airbox to see it

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    Item 11 Map sensor Peugeot 207 gti 2007 model-screenshot-2.jpg

  6. #6
    AAA
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    Ok I get it now. The map sensor is behind the air filter box


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  7. #7
    AAA
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    Having faulty map sensor will it cause the engine to have rough idle ??


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    Possible. But i would have it scanned first instead of just replacing parts.

    Theres a few reasons why idle can be affected
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  9. #9
    AAA
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    But itís got no engine lights and the last time I scanned it it came up this in the pic Map sensor Peugeot 207 gti 2007 model-img_1528257700.602977.jpg


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  10. #10
    AAA
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    I have also replace o2 sensor both of them top and bottom.


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  11. #11
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    How old are your spark plugs?
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  12. #12
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    I change it last 7 months ago


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    Don't spend money blindly.

    The scanning tool needed is Diagbox, as used by dealers. Plenty of people here have one. It will tell you details of the fault, and which cylinder is misfiring. Do you have a code number? All readers can give this much. Misfiring codes are in the 1300s.

    Once you know which cylinder it is, swap both the plugs and the coils to two other cylinders. That is only a ten minute job. If a coil or plug is the trouble the misfire code will shift to a different cylinder. If not, then the inlet valves and breathing are suspect.

  14. #14
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    Default Map sensor Peugeot 207 gti 2007 model

    I just clean the map sensor and big change idle back to normal but still allitle bit rough once in a while. Maybe I might have to change the map sensor since it never been change. Map sensor Peugeot 207 gti 2007 model-img_1528278781.478826.jpgMap sensor Peugeot 207 gti 2007 model-img_1528278809.812711.jpg


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    And perhaps you don't. They last a long time. You check sensors electrically, eg with an oscilloscope or voltmeter. Get the diagnostic codes.

    Also consider that one of the coil rubbers could be dirty or arcing.

  16. #16
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    Hi everyone ,

    Just an update on my car,
    At the moment everything is back to normal. My fuel ratio is reading back to normal before it was losing fuel and reading wasnít correct, idle is back to normal no more rough idle. Performance of the car feels like itís got more power and speed since I cleaned the map sensor. But Iím buying a new one just in case the old one plays up again. Thank you everyone for ur help.


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