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  1. #1
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    Default Differences between 4 cyl and 6 cyl Tacho

    Hi all,

    now this may be an easy answer or it might be a real pain in the ass. I got a replacement dash for the Q4 with the correct speedo. However when I use the car the tacho only seems to read 2/3 of what it should do. I'm not sure from what car the dash came from, but I get the feeling that it might have been a V6 model.

    Is there a way to tell, I'm pretty sure both dash units had the same part number, and is there a way to swap the tacho over to 4cyl operation?

    Cheers guys
    1994 Alfa Romeo 155 Q4: Dozeing in the garage.
    2009 Audi A4 tdi: Everyday drive.
    1994 Alfa Romeo 155 , 1995cc Std Standard Black

  2. #2
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    Default

    Q4 and V6 uses same tacho. I swaped from V6 to Q4 on mine and evrything worked OK. I think your tacho doesnt work correctly anymore

  3. #3
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    Default

    Its all working now, I swapped over the IC from the back for the original Tacho to the new one in the MPH dials.

    Not sure if the one I had in the instuments I bought was broken or not.
    1994 Alfa Romeo 155 Q4: Dozeing in the garage.
    2009 Audi A4 tdi: Everyday drive.
    1994 Alfa Romeo 155 , 1995cc Std Standard Black

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