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Thread: crank shaft sensor

  1. #1
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    Default crank shaft sensor

    hi guys i hope u can help i have had my car at garage and they said my car reports crank sensor fault. i was wondering if anyone could tell me where its on the car please?.

    also the garage said its showing a cam sensor fault...i have been advised that my car dont h avr a cam shaft sensor on it... even vx even sais thet dobt have one...

    i hope.sumone could assist ne with witg tjis issue please

    vec-c dti sxi 53 plate...
    thanks
    mick

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    also i was wondeing if anyone can think of any thing that could trigger the cam sensor fault with one not bein on the car

    thanks
    mick

  3. #3
    Regular Member m8internet's Avatar
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    It is quite common for the camshaft and crankshaft sensors to fail at around the same time

    On my first VX the camshaft sensor failed, it was replaced under warranty
    The crankshaft sensor failed about two months later

    On my next VX the crankshaft sensor failed first and so had both replaced at the same time

    In general the crankshaft sensor is difficult to access, but the lead can normally be seen running along the front of the engine and down to the bottom of the engine next to the cambelt case cover
    The camshaft sensor is much easier and resides at the top of the engine next to the cambelt case cover

    An engine needs both sensors, I've never seen one with only a crankshaft sensor, but in some engines the camshaft sensor is shared
    However I am almost sure the earlier DTI does have one, so take a look next to the top of the cambelt case cover (yes, I know it is a chain, but the cover is the same)

    As an aside, an engine can run without the camshaft sensor but if the crankshaft sensor fails it will go straight to Safe Mode and this sensor should be replaced immediately
    On the earlier Vectra B the camshaft sensor would just flash the EMS warning light, making it much easier to diagnose

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    The crankshaft sensor is on the front of the engine block not far above the sump. It's secured by a Torx bolt. There are 2 other sensors nearby - oil level and oil temperature but they aren't secured with Torx bolts.

    There is no crankshaft sensor on the DTi. Well not a separate one anyway, and if there is one it's inside the fuel pump (sure someone mentioned that once but don't know if it's true).

    So if you are sure that the fault is one or both of these sensors then you'll have to replace the crankshaft one and hope it cures the problem.

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    Regular Member Даниил's Avatar
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    Vehicle : Vectra C

    Trim : sri nav/Elite

    Engine : CDTI 150

    Year : 56

    Mileage : 130ish

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    camshaft and crankshaft sensors failed at the same on my cdti it starts better now.

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    Vehicle : Vectra

    Trim : Exclusive

    Engine : 1.9 CDTI


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    My dti showed a crankshaft sensor fault and also a camshaft fault (can't remember the codes), which caused it not to run. The crankshaft fault cleared & the engine started after the contacts were cleaned up. I thought nothing more of the camshaft fault until about 2 months later the pump ecu died. I read somewhere the camshaft sensor is inside the fuel pump (Vauxhall told me the 2.2dti doesn't have a camshaft sensor). Hope yours isn't going the same way.

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    Regular Member m8internet's Avatar
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    Quote Originally Posted by James24 View Post
    There is no crankshaft sensor on the DTi. Well not a separate one anyway, and if there is one it's inside the fuel pump (sure someone mentioned that once but don't know if it's true)
    I assume you actually mean the camshaft sensor, but thanks for confirming this is where the sensor is shared

    I would agree, replace the crankshaft sensor and compare
    If the camshaft sensor issue remains, then sadly the Fuel Pump needs to come out

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    thanks guys ur stars...i will get a new crank sensor 2morra..

    is there any way to clear the codes without taking to a garage? i tried my elm327 but cant find any software to work with car :-(

    thanks mick

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    thanks guys ur stars...i will get a new crank sensor 2morra..

    is there any way to clear the codes without taking to a garage? i tried my elm327 but cant find any software to work with car :-(

    thanks mick

  10. #10
    Regular Member m8internet's Avatar
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    Quote Originally Posted by dr1v3r View Post
    is there any way to clear the codes without taking to a garage? i tried my elm327 but cant find any software to work with car
    When you fit the new crankshaft sensor there should be no need to reset the codes, the car should automatically realise a new sensor has been fitted
    Just wait two hours after fitting if the EMS Warning light and Safe Mode is still active, after 48 hours it should switch off

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