Fuel Problems 93 850? 5 cyl

Discussion in 'Volvo 850' started by Happy Trails, Jun 27, 2008.

  1. Happy Trails

    Happy Trails Guest

    My nephew has this vehicle which is stuck at the farm 2 hrs away. I
    will go there this weekend and repair it, but I am not familiar with
    Volvos.

    He said it would stop-go-stop just like it was out of gas, but there
    was lots of gas in the tank.

    Can someone tell me please:

    -where is the fuel filter located?

    -is it a mechanical pump or electric one?

    -if electric, where is it?

    Are there any special tricks or suggestions to troubleshooting and
    repairing/replacing these components? He says he bought a new filter
    and pump to take with us.

    Thanks, Tom
     
    Happy Trails, Jun 27, 2008
    #1
  2. Happy Trails

    Jarkka Guest

    See http://www.matthewsvolvosite.com/volvo_850.php, Repairs and Tips.
    (I'd start by checking the fuel pump relay for bad solder joints - a
    common problem ->
    http://www.matthewsvolvosite.com/chat/phpBB2/viewtopic.php?p=31037#31037)
     
    Jarkka, Jun 30, 2008
    #2
  3. Happy Trails

    Happy Trails Guest

    Thanks for the info, Jarkka.

    Turns out fuel system seems okay - I have pressure on rail !

    But no sparks ???

    So I pulled the coil assembly, with the power transistor mounted.

    How can I test that to see if it's good?

    Are these usually available at a scrap yard?

    Is replacing this the likely solution, or am I going to find out it is
    a mysterious fault involving sensors and a computer, hahahaha?

    ==============================
     
    Happy Trails, Jul 4, 2008
    #3
  4. Happy Trails

    Jarkka Guest

    Jarkka, Jul 7, 2008
    #4
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