'94 940 not starting when cold

Discussion in 'Volvo 940' started by DW, Jan 21, 2005.

  1. DW

    DW Guest

    This is similar to the '92 740 post.
    I have a '94 940 that starts great except for the really cold days.
    (Canada)
    On these cold days the motor turns over strong (until I wear out the battery
    and resort to boosting). Boosting doesn't help.
    The engine will fire for a VERY short time (.5 sec) I have replaced
    distributor cap, fuel filter, plugs and always have gas line antifreeze in
    the tank. As soon as the weather warms up it starts and runs great.

    In another post the group mentioned a cold start injector. Would a Canadian
    940 have such a device? Is there anything else I can check or have looked
    into?

    The ironic thing is that on these coldest days of the year my 1980 Bertone
    starts right up and brings me to work.

    Thanks for your comments in advance. You are a helpful group.

    Doug Wildeboer
    Toronto Canada.
     
    DW, Jan 21, 2005
    #1
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  2. DW

    Rusty Guest

    I had the same problem with my 87. Believe it or not, it was a tiny bit of
    frost on fuse #1...the fuse that controls the fuel pump. Give the fuse a
    slight twist in the socket and see if that helps.

    RS




    "DW" <> wrote in message
    news:ITfId.61881$...
    > This is similar to the '92 740 post.
    > I have a '94 940 that starts great except for the really cold days.
    > (Canada)
    > On these cold days the motor turns over strong (until I wear out the
    > battery and resort to boosting). Boosting doesn't help.
    > The engine will fire for a VERY short time (.5 sec) I have replaced
    > distributor cap, fuel filter, plugs and always have gas line antifreeze in
    > the tank. As soon as the weather warms up it starts and runs great.
    >
    > In another post the group mentioned a cold start injector. Would a
    > Canadian 940 have such a device? Is there anything else I can check or
    > have looked into?
    >
    > The ironic thing is that on these coldest days of the year my 1980 Bertone
    > starts right up and brings me to work.
    >
    > Thanks for your comments in advance. You are a helpful group.
    >
    > Doug Wildeboer
    > Toronto Canada.
    >
    >
     
    Rusty, Jan 22, 2005
    #2
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  3. Doug, your 940 will most certainly have a Cold Start Injector unless it has
    a 16-valve twin-cam motor.

    Cheers, Peter.

    "Rusty" <> wrote in message
    news:79lId.47889$...
    >I had the same problem with my 87. Believe it or not, it was a tiny bit of
    >frost on fuse #1...the fuse that controls the fuel pump. Give the fuse a
    >slight twist in the socket and see if that helps.
    >
    > RS
    >
    >
    >
    >
    > "DW" <> wrote in message
    > news:ITfId.61881$...
    >> This is similar to the '92 740 post.
    >> I have a '94 940 that starts great except for the really cold days.
    >> (Canada)
    >> On these cold days the motor turns over strong (until I wear out the
    >> battery and resort to boosting). Boosting doesn't help.
    >> The engine will fire for a VERY short time (.5 sec) I have replaced
    >> distributor cap, fuel filter, plugs and always have gas line antifreeze
    >> in the tank. As soon as the weather warms up it starts and runs great.
    >>
    >> In another post the group mentioned a cold start injector. Would a
    >> Canadian 940 have such a device? Is there anything else I can check or
    >> have looked into?
    >>
    >> The ironic thing is that on these coldest days of the year my 1980
    >> Bertone starts right up and brings me to work.
    >>
    >> Thanks for your comments in advance. You are a helpful group.
    >>
    >> Doug Wildeboer
    >> Toronto Canada.
    >>
    >>

    >
    >
     
    Peter K L Milnes, Jan 22, 2005
    #3
  4. DW

    Mike F Guest

    DW wrote:
    >
    > This is similar to the '92 740 post.
    > I have a '94 940 that starts great except for the really cold days.
    > (Canada)
    > On these cold days the motor turns over strong (until I wear out the battery
    > and resort to boosting). Boosting doesn't help.
    > The engine will fire for a VERY short time (.5 sec) I have replaced
    > distributor cap, fuel filter, plugs and always have gas line antifreeze in
    > the tank. As soon as the weather warms up it starts and runs great.
    >
    > In another post the group mentioned a cold start injector. Would a Canadian
    > 940 have such a device? Is there anything else I can check or have looked
    > into?
    >
    > The ironic thing is that on these coldest days of the year my 1980 Bertone
    > starts right up and brings me to work.
    >
    > Thanks for your comments in advance. You are a helpful group.
    >
    > Doug Wildeboer
    > Toronto Canada.


    There are several things that can cause grief, starting with technique.
    Avoid short, repeated cranks, engage the starter for longer periods of
    time, and don't touch the throttle until the engine actually starts, or
    you'll flood it.

    Then there's the standard tuneup stuff, air filter, plugs, cap, rotor,
    wires. Other parts that can cause intermittent problems when cold could
    be the crankshaft sensor (on bell housing below the distributor), radio
    suppression relay (black 4 pin relay, usually mounted on a shock tower)
    or fuel pump relay (white 6 pin relay behind the fuses on the center
    console).

    Don't worry about your cold start valve. If you have one and it's not
    working you'll notice hard starting at much warmer (even above the
    freezing point) temperatures.

    --
    Mike F.
    Thornhill (near Toronto), Ont.

    Replace tt with t (twice!) and remove parentheses to email me directly.
    (But I check the newsgroup more often than this email address.)
     
    Mike F, Jan 24, 2005
    #4
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