V70 diesel issues

Discussion in 'Volvo V70' started by Nick, Feb 19, 2007.

  1. Nick

    Nick Guest

    I currently have a March 1997 2.5 Direct Injection diesel manual V70 which
    has about 161,000 miles on the clock.

    Pretty much everything on it is working fine and I have done the timing belt
    and injector pump drive belts/injector timing in the last 5000 miles, and
    performance seems lively.

    One issue I am getting is that it sounds like it is "misfiring" or has a
    lazy cylinder at idle/low revs (less than 2000rpm). The dealer says it
    sounds normal and has done a cranking current test on it and says cylinder
    compressions are normal and balanced, which leaves me wondering what else it
    could be. (poor injector pattern on one ?) It doesn't seem to be affecting
    anything but just sounds terrible - I have run engine oil flush and also
    injector cleaner through, thinking it might be a partially sticking
    injector, but no change. Fuel consumption seems good ( around 45 mpg (UK) on
    a run). Any suggestions from anyone what else I could consider looking for ?

    Another issue is that what appears several (but not all) dash board panel
    lights seem to be blown, mainly on the left side and also on the left side
    of the radio/CD unit, making it very difficult at night to see the knobs -
    not sure if these apparent problems are linked or I just need to replace
    blown bulbs / LEDS, or a wire / connector has come adrift. How do I get
    into the dash to replace or is it a major dash removal job to replace, and
    also the radio ?


    Nick, Feb 19, 2007
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  2. Nick

    Tim.. Guest

    If its not had refurbed / new injectors in the 160k, then now is the time.

    Also has it ever had any history of injesting water? A slightly bent rod
    will create exactly the symptoms you describe. (timing will be retarded on
    that pot)

    Radio pulls out easily, just press in and release each bar up the side-
    they'll pop out. You'll need to open up the radio and be good with a
    soldering iron when you have done. Bulbs are wire-ended that can be bought
    from maplin / CPC etc.

    Dash clocks are bayonet minitures. You need to remove the top of the dash
    (alittle more tricky if you have pass. airbag) and then the clocks to change
    the bulbs. Change them all.

    The Haynes manual shows how to do this quite well.

    Tim.., Feb 20, 2007
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  3. Nick

    Nick Guest

    Thanks Tim

    Brilliant - will do

    Nick, Feb 20, 2007
  4. Notice if the sound dissapear when you press down and hold the brake pedal?
    If that's the case - it is a worn vaccum pump or a vacuum leak in the vacuum
    circuit. Quite normal on a car with that milage.

    Cheers Per
    Per Groth Ludvigsen, Feb 20, 2007
  5. smaller hand up behind
    the instrument cluster to get the bajonet bulbs from the compartment
    underneath. My hand is too
    big but my wife managed to change 2 bulbs in the left side without problems.

    Cheers again
    Per Groth Ludvigsen, Feb 20, 2007
  6. Nick

    HAL9000F Guest

    Here is the dashboard removal howto - hope it helps...


    You don't need to go all the way to changge bulbs probably - as Per
    Groth Ludvigsen said :)
    HAL9000F, Feb 20, 2007
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