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Thread: timing sensor

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    Default timing sensor

    replacing the timing sensor {see graphic}, which is the procedure to properly register the new one?
    Could not find the procedure in the workshop manual.

    regards
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    Nick

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    there is a mark in the body near the front bolt
    this must be with the mark in the cylinder head
    it is not exactly a mark...it is a corner made from 2 surfases

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    thanks Nick
    Nick

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    The UK manual mentions a "reference notch" in the middle of the bolt hole near the electrical connector.

    But not sure that matches anything on the head???

    wrinx
    My Q4 in the Garage

    www.alfaromeo155.co.uk ............................ □□□-V-□□□ .................................. www.ilmostro.co.uk

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    I found some notes how to mound this sensor properly, from my friend in Italy, concerning the sensor for the Evo2.
    I'll translate them tomorrow {I'm by the sea right now with the family} and I'll post it here.
    I believe the holes must coincide - see attachment - with engine at compression phase for the 1st cylinder {at PMS}.

    I believe it can only be checked with an oscilloscope but ... I have not any to confirm this.
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    Nick

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    The "reference notch" I mentioned is below the "8", look forward to your translation as the diagram is pointing elsewhere

    wrinx
    My Q4 in the Garage

    www.alfaromeo155.co.uk ............................ □□□-V-□□□ .................................. www.ilmostro.co.uk

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    Quote Originally Posted by wrinx View Post
    The "reference notch" I mentioned is below the "8", look forward to your translation as the diagram is pointing elsewhere

    wrinx
    you mean this one? This is the one Nick {na15575} means I believe.
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    Last edited by arjunior45; 03-08-09 at 11:10.
    Nick

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    well, according to the notes from the guy in Italy, the proper setting is
    - to have the hall sensor at 50 degrees from the PMS for an oem car.
    Or, by
    a} placing the 1st cylinder at PMS, compression phase
    and
    b} having the two holes in the red cycles in the graphic {4 mm diameter holes} align!

    Thats all

    Though still waiting for a confirmation

    ps.
    PMS = higher dead point - do not remember the term in English, sorry
    Nick

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    We tend to call it "Top dead centre" (TDC)

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    Quote Originally Posted by AlfaJack View Post
    We tend to call it "Top dead centre" (TDC)
    Thanks!!!
    Nick

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    Quote Originally Posted by arjunior45 View Post
    you mean this one? This is the one Nick {na15575} means I believe.
    Yes, that's the notch. Sounds like your man knows a lot more though...

    wrinx
    My Q4 in the Garage

    www.alfaromeo155.co.uk ............................ □□□-V-□□□ .................................. www.ilmostro.co.uk

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    Quote Originally Posted by wrinx View Post
    Yes, that's the notch. Sounds like your man knows a lot more though...

    wrinx
    confirmation received. The procedure described is the proper one.

    Yes, he is The guru and I trust him 1000%.
    Nick

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    Excellent, thanks...I'm about to check the valve clearances on mine so will check this at the same time

    wrinx
    My Q4 in the Garage

    www.alfaromeo155.co.uk ............................ □□□-V-□□□ .................................. www.ilmostro.co.uk

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    Quote Originally Posted by wrinx View Post
    Excellent, thanks...I'm about to check the valve clearances on mine so will check this at the same time

    wrinx
    when you check this sensor with 1st cylinder at TDC compression phase, could you please take a picture from the camshaft? I'm interested on how the cam notches will stand - towards inside or towards outside the engine head.

    Now you mention it I think I must check valve clearance in mine too. I hear a couple of valves knocking - one for sure.
    Nick

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    Will have a go

    wrinx
    My Q4 in the Garage

    www.alfaromeo155.co.uk ............................ □□□-V-□□□ .................................. www.ilmostro.co.uk

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    thanks
    Nick

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