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Thread: barometric/boost pressure

  1. #1
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    Vehicle : Vectra

    Trim : SXI

    Engine : 2.2 DTI

    Year : 2003

    Mileage : 105k

    Default barometric/boost pressure

    Hi all

    just put my 03 2.2 dti on opcom as it keeps getting the spanner light on the dashboard
    it come up with p1105 FA barometric pressure not plausible with boost pressure
    i recently put it on a computer which come up with barometric pressure sensor which i have replaced

    anyone got any ideas? or had the same problem

    thanks in advance

  2. #2
    Regular Member Ste's Avatar
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    Vehicle : Jaguar XF 3.0D V6

    Trim : Black

    Engine : 3.0D V6

    Year : 0000

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    Where is the barometric pressure sensor located? They used to be located on the ECU, but I don't know where they are on your car.
    Last edited by Ste; 1st February 2012 at 19:27.

  3. #3
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    Vehicle : Vectra

    Trim : SXI

    Engine : 2.2 DTI

    Year : 2003

    Mileage : 105k

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    its just behind the maf

  4. #4
    Regular Member Ste's Avatar
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    Vehicle : Jaguar XF 3.0D V6

    Trim : Black

    Engine : 3.0D V6

    Year : 0000

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    Have you removed the MAP sensor and cleaned it? Is the performance of the car right? Any smoke? Fuel economy changed?



    Have you checked the wiring / plug for continuity?

  5. #5
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    hi where is boost pressure sensor and maf sensor

  6. #6
    Full Member bobssignum's Avatar
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    Vehicle : Signum 2.0 DTi

    Trim : Elegance/Elite

    Engine : 2.0DTi

    Year : 2003

    Mileage : 73350

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    Boost pressure sensor is on the inlet manifold , the maf sensor is inside the maf itself
    Driving vauxhall,s for 30 + years
    and still loving it

  7. #7
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    Vehicle : Vectra

    Trim : SXI

    Engine : 2.2 DTI

    Year : 2003

    Mileage : 105k

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    there is no smoke its in limp mode so wont let me rev over 2 1/2k fuel consumption has gone down a bit
    it did say baro sensor/wiring on the first diagnostic check but not after i changed the baro sensor

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    Vehicle : Vectra

    Trim : SXI

    Engine : 2.2 DTI

    Year : 2003

    Mileage : 105k

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    the light will occasionally go out and it pulls like a train then

    where is the map sensor located?

  9. #9
    Regular Member TonyP2020's Avatar
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    Vehicle : Mokka

    Trim : SE - Orange Rock 's !!

    Engine : 1.7CDTi

    Year : 2014

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    There is no MAP, you have a Barometric Sensor, a Mass Air Flow Sensor and a Boost Pressure Sensor.
    The Barometric Sensor should have a voltage (in op-com) of about 4.0v, anything lower eg, 1.6V, is a faulty sensor.
    Similar voltage on the Boost sensor, and the MAF voltage will rise with the airflow.
    The boost pressure demand and the actual boost pressure are readings to observe.
    It is possible that one hose is off somewhere, or split, and will be OK until the boost pressure rises and forces the hose away away from where it should be, or opens the split, then the boost pressure falls and the split/gap 'heals'.
    And I'm sorry to say that you might also have a failing turbo. That's getting to be a bit of a common fault on here.
    Last edited by TonyP2020; 1st February 2012 at 22:41.

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  11. #10
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    Vehicle : Vectra

    Trim : SXI

    Engine : 2.2 DTI

    Year : 2003

    Mileage : 105k

    Default

    dont know if i did it right or not but i got boost sensor as 2.15v and baro sensor as 4.3v

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