88 240, location of AT OD solenoid

Discussion in 'Volvo 240' started by Raymond Cruz, Oct 30, 2004.

  1. Raymond Cruz

    Raymond Cruz Guest

    I need to verify the location of the OD solenoid on my 88 240 AT wagon. I
    found a wire that is routed from the right rear of the trans in the area of
    the fluid pan and drain, over the top to the left rear, and terminating at
    the top of a vertical cylindrical structure secured by two bolts to the left
    of the fluid pan. I assume this cylindrical structure is the solenoid. I
    didn't see any significant deterioration of the wire.

    Over a period of about 10 days the car completely lost 4th gear. The
    transmission, including fluid quality and level, seems fine otherwise. At
    first the problem was intermittent. The dashboard arrow always goes on and
    off with the gearshift switch. From what I could glean from old NG articles
    I assume this means the relay is good. My idea is to check whether voltage
    to the solenoid goes on and off with the switch and if so I will assume the
    solenoid needs replacing. Is this a reasonable strategy?
     
    Raymond Cruz, Oct 30, 2004
    #1
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  2. Raymond Cruz

    James Sweet Guest

    "Raymond Cruz" <> wrote in message
    news:wfNgd.730$o52.621@trndny03...
    > I need to verify the location of the OD solenoid on my 88 240 AT wagon. I
    > found a wire that is routed from the right rear of the trans in the area

    of
    > the fluid pan and drain, over the top to the left rear, and terminating at
    > the top of a vertical cylindrical structure secured by two bolts to the

    left
    > of the fluid pan. I assume this cylindrical structure is the solenoid. I
    > didn't see any significant deterioration of the wire.
    >


    Yep that's the solenoid.


    > Over a period of about 10 days the car completely lost 4th gear. The
    > transmission, including fluid quality and level, seems fine otherwise. At
    > first the problem was intermittent. The dashboard arrow always goes on

    and
    > off with the gearshift switch. From what I could glean from old NG

    articles
    > I assume this means the relay is good. My idea is to check whether

    voltage
    > to the solenoid goes on and off with the switch and if so I will assume

    the
    > solenoid needs replacing. Is this a reasonable strategy?
    >
    >


    If you have voltage at that wire then the solenoid is getting power. If
    that's the case, remove it and try blowing through it before you replace it,
    a new one is expensive, I think I have a good used one somewhere you can
    have cheap though.
     
    James Sweet, Oct 30, 2004
    #2
    1. Advertisements

  3. Raymond,

    Before you remove the solenoid, inspect the wiring from the solenoid back
    toward the gear shifter housing. It runs over the top of the transmission,
    and often is bouncing around on top of the hot transmission. This heat,
    along with normal road debris splashing up, has likely worn insulation loose
    from the wires, causing a short to ground whenever the wire touches the
    transmission.

    You'll probably want to use one of those small dentist mirrors on a wand,
    and a flash light to view the wire above the tranny.

    This same problem happened to me a month ago. When I wrote to this group, I
    got a few responses to check the wire before replacing the solenoid. After
    repairing the wire, I covered it with a section of that accordian-type
    protector that you can get at pep boys and autozone.

    Pat
    "Raymond Cruz" <> wrote in message
    news:wfNgd.730$o52.621@trndny03...
    > I need to verify the location of the OD solenoid on my 88 240 AT wagon. I
    > found a wire that is routed from the right rear of the trans in the area

    of
    > the fluid pan and drain, over the top to the left rear, and terminating at
    > the top of a vertical cylindrical structure secured by two bolts to the

    left
    > of the fluid pan. I assume this cylindrical structure is the solenoid. I
    > didn't see any significant deterioration of the wire.
    >
    > Over a period of about 10 days the car completely lost 4th gear. The
    > transmission, including fluid quality and level, seems fine otherwise. At
    > first the problem was intermittent. The dashboard arrow always goes on

    and
    > off with the gearshift switch. From what I could glean from old NG

    articles
    > I assume this means the relay is good. My idea is to check whether

    voltage
    > to the solenoid goes on and off with the switch and if so I will assume

    the
    > solenoid needs replacing. Is this a reasonable strategy?
    >
    >
     
    Pat Quadlander, Oct 30, 2004
    #3
  4. Raymond Cruz

    Raymond Cruz Guest

    There is a short wire coming from the gear shift housing mated via a plastic
    connector to a longer wire that goes over the gear shift housing to the
    solenoid. I'd like to separate the wires at the connector but I can't quite
    get hand or tool on the connector. After fussing a while it occurred to me
    that if I moved the wires and connector to the left side I might better be
    able to unlatch the connector. Indeed the connector is now closer to my
    reach but not quite enough to get a good hold. Any hints as to how I can
    separate the connector? If I start taking apart the shift lever switch will
    I be able to feed more of the wire through the floor so the connector will
    drop within my reach? Also, do I squeeze or pry apart the tabs on the
    connector?

    In shifting the wires to the left it was very interesting to see that a much
    shorter and less obstructed routing that does not place the wire over the
    top of the hot transmission housing resulted. The only caveat is that the
    wire is in close quarters with the shift lever linkage on this side but it
    seems as if the wire could be secured to not touch or interfere with the
    linkage. Doesn't it make sense to leave the wire routed this way?

    RC

    "Pat Quadlander" <> wrote in message
    news:...
    > Raymond,
    >
    > Before you remove the solenoid, inspect the wiring from the solenoid back
    > toward the gear shifter housing. It runs over the top of the

    transmission,
    > and often is bouncing around on top of the hot transmission. This heat,
    > along with normal road debris splashing up, has likely worn insulation

    loose
    > from the wires, causing a short to ground whenever the wire touches the
    > transmission.
    >
    > You'll probably want to use one of those small dentist mirrors on a wand,
    > and a flash light to view the wire above the tranny.
    >
    > This same problem happened to me a month ago. When I wrote to this group,

    I
    > got a few responses to check the wire before replacing the solenoid.

    After
    > repairing the wire, I covered it with a section of that accordian-type
    > protector that you can get at pep boys and autozone.
    >
    > Pat
    > "Raymond Cruz" <> wrote in message
    > news:wfNgd.730$o52.621@trndny03...
    > > I need to verify the location of the OD solenoid on my 88 240 AT wagon.

    I
    > > found a wire that is routed from the right rear of the trans in the area

    > of
    > > the fluid pan and drain, over the top to the left rear, and terminating

    at
    > > the top of a vertical cylindrical structure secured by two bolts to the

    > left
    > > of the fluid pan. I assume this cylindrical structure is the solenoid.

    I
    > > didn't see any significant deterioration of the wire.
    > >
    > > Over a period of about 10 days the car completely lost 4th gear. The
    > > transmission, including fluid quality and level, seems fine otherwise.

    At
    > > first the problem was intermittent. The dashboard arrow always goes on

    > and
    > > off with the gearshift switch. From what I could glean from old NG

    > articles
    > > I assume this means the relay is good. My idea is to check whether

    > voltage
    > > to the solenoid goes on and off with the switch and if so I will assume

    > the
    > > solenoid needs replacing. Is this a reasonable strategy?
     
    Raymond Cruz, Oct 31, 2004
    #4
  5. Raymond,

    I had the same notion that the factory routing was longer, and your thought
    that it secured it away from the shift linkage seems likely.

    When I re-assembled mine, I covered the wire and the connector with the
    protective accordian shield, so I can't see if there are any locking tabs or
    not. On my old solenoid, the opening of the connector has a small lip,
    about the right size to hold a spring clip that snaps over the lip during
    insertion of the connectors. I believe a firm grip on each side of the
    connector, and some counter-twisting to separate will let you pull the
    connectors apart. You might even use some pliers or grip-lock pliers, tight
    enough to hold but not tight enough to crush.

    Were you able to inspect the wiring that is just laying loose on top of the
    transmission? You probably need a small mirror on an extender. When I
    looked at mine, there was a 3 inch section that had no insulation, and the
    live wire was completely exposed, touching the metal trans housing.

    Pat

    "Raymond Cruz" <> wrote in message
    news:9K6hd.1044$HT3.647@trndny08...
    > There is a short wire coming from the gear shift housing mated via a

    plastic
    > connector to a longer wire that goes over the gear shift housing to the
    > solenoid. I'd like to separate the wires at the connector but I can't

    quite
    > get hand or tool on the connector. After fussing a while it occurred to

    me
    > that if I moved the wires and connector to the left side I might better be
    > able to unlatch the connector. Indeed the connector is now closer to my
    > reach but not quite enough to get a good hold. Any hints as to how I can
    > separate the connector? If I start taking apart the shift lever switch

    will
    > I be able to feed more of the wire through the floor so the connector will
    > drop within my reach? Also, do I squeeze or pry apart the tabs on the
    > connector?
    >
    > In shifting the wires to the left it was very interesting to see that a

    much
    > shorter and less obstructed routing that does not place the wire over the
    > top of the hot transmission housing resulted. The only caveat is that the
    > wire is in close quarters with the shift lever linkage on this side but it
    > seems as if the wire could be secured to not touch or interfere with the
    > linkage. Doesn't it make sense to leave the wire routed this way?
    >
    > RC
    >
    > "Pat Quadlander" <> wrote in message
    > news:...
    > > Raymond,
    > >
    > > Before you remove the solenoid, inspect the wiring from the solenoid

    back
    > > toward the gear shifter housing. It runs over the top of the

    > transmission,
    > > and often is bouncing around on top of the hot transmission. This heat,
    > > along with normal road debris splashing up, has likely worn insulation

    > loose
    > > from the wires, causing a short to ground whenever the wire touches the
    > > transmission.
    > >
    > > You'll probably want to use one of those small dentist mirrors on a

    wand,
    > > and a flash light to view the wire above the tranny.
    > >
    > > This same problem happened to me a month ago. When I wrote to this

    group,
    > I
    > > got a few responses to check the wire before replacing the solenoid.

    > After
    > > repairing the wire, I covered it with a section of that accordian-type
    > > protector that you can get at pep boys and autozone.
    > >
    > > Pat
    > > "Raymond Cruz" <> wrote in message
    > > news:wfNgd.730$o52.621@trndny03...
    > > > I need to verify the location of the OD solenoid on my 88 240 AT

    wagon.
    > I
    > > > found a wire that is routed from the right rear of the trans in the

    area
    > > of
    > > > the fluid pan and drain, over the top to the left rear, and

    terminating
    > at
    > > > the top of a vertical cylindrical structure secured by two bolts to

    the
    > > left
    > > > of the fluid pan. I assume this cylindrical structure is the

    solenoid.
    > I
    > > > didn't see any significant deterioration of the wire.
    > > >
    > > > Over a period of about 10 days the car completely lost 4th gear. The
    > > > transmission, including fluid quality and level, seems fine otherwise.

    > At
    > > > first the problem was intermittent. The dashboard arrow always goes

    on
    > > and
    > > > off with the gearshift switch. From what I could glean from old NG

    > > articles
    > > > I assume this means the relay is good. My idea is to check whether

    > > voltage
    > > > to the solenoid goes on and off with the switch and if so I will

    assume
    > > the
    > > > solenoid needs replacing. Is this a reasonable strategy?

    >
    >
     
    Pat Quadlander, Oct 31, 2004
    #5
  6. Raymond Cruz

    Raymond Cruz Guest

    James,
    This reply also acknowledges Pat Quadlander's 2 messages in this thread that
    were very helpful. I unhinged the shift linkage and that gave me better
    access to the electrical connector which I was able to take apart. I found
    that with the ignition switch on and the OD light off there was 12 volts at
    the connector and when I pressed the OD switch such that the OD arrow was
    on, there was no voltage. I assume these are the right states although I
    wonder why it was not designed for the reverse states since that would have
    provided a friendlier failure mode, i.e. solenoid failure would only mean
    4th gear could not be locked out. I then removed the solenoid and found
    that the rubber cap at one end was partly rotted away. I'm not sure that
    the wiring at that end is still sound so I think the next step is to replace
    the solenoid. I'm interested in your offer to sell me a cheap working one.
    I found that FCP Groton sells them for $95 so hopefully yours is a lot less
    :). Please let me know ASAP so I can begin to get this car together.
    Reply to except change "3e" to "eee".

    One unrelated question -- I decoupled the shift linkage by popping off a
    snap ring that held a short shaft inside a hole on a metal plate. The hole
    diameter is much larger that the shaft diameter so I think there probably
    should be a bushing to take up the extra space. Anyone know what kind of
    bushing belongs there? I might be able to find one made of nylon or brass
    at my local hardware store.

    RC

    "James Sweet" <> wrote in message
    news:zISgd.514$BU6.365@trnddc05...
    >
    > "Raymond Cruz" <> wrote in message
    > news:wfNgd.730$o52.621@trndny03...
    > > I need to verify the location of the OD solenoid on my 88 240 AT wagon.

    I
    > > found a wire that is routed from the right rear of the trans in the area

    > of
    > > the fluid pan and drain, over the top to the left rear, and terminating

    at
    > > the top of a vertical cylindrical structure secured by two bolts to the

    > left
    > > of the fluid pan. I assume this cylindrical structure is the solenoid.

    I
    > > didn't see any significant deterioration of the wire.
    > >

    >
    > Yep that's the solenoid.
    >
    >
    > > Over a period of about 10 days the car completely lost 4th gear. The
    > > transmission, including fluid quality and level, seems fine otherwise.

    At
    > > first the problem was intermittent. The dashboard arrow always goes on

    > and
    > > off with the gearshift switch. From what I could glean from old NG

    > articles
    > > I assume this means the relay is good. My idea is to check whether

    > voltage
    > > to the solenoid goes on and off with the switch and if so I will assume

    > the
    > > solenoid needs replacing. Is this a reasonable strategy?
    > >
    > >

    >
    > If you have voltage at that wire then the solenoid is getting power. If
    > that's the case, remove it and try blowing through it before you replace

    it,
    > a new one is expensive, I think I have a good used one somewhere you can
    > have cheap though.
    >
    >
     
    Raymond Cruz, Oct 31, 2004
    #6
  7. Raymond Cruz

    Raymond Cruz Guest

    James,
    This reply also acknowledges Pat Quadlander's 2 messages in this thread that
    were very helpful. I unhinged the shift linkage and that gave me better
    access to the electrical connector which I was able to take apart. I found
    that with the ignition switch on and the OD light off there was 12 volts at
    the connector and when I pressed the OD switch such that the OD arrow was
    on, there was no voltage. I assume these are the right states although I
    wonder why it was not designed for the reverse states since that would have
    provided a friendlier failure mode, i.e. solenoid failure would only mean
    4th gear could not be locked out. I then removed the solenoid and found
    that the rubber cap at one end was partly rotted away. I'm not sure that
    the wiring at that end is still sound so I think the next step is to replace
    the solenoid. I'm interested in your offer to sell me a cheap working one.
    I found that FCP Groton sells them for $95 so hopefully yours is a lot less
    :). Please let me know ASAP so I can begin to get this car together.
    Reply to except change "3e" to "eee".

    One unrelated question -- I decoupled the shift linkage by popping off a
    snap ring that held a short shaft inside a hole on a metal plate. The hole
    diameter is much larger that the shaft diameter so I think there probably
    should be a bushing to take up the extra space. Anyone know what kind of
    bushing belongs there? I might be able to find one made of nylon or brass
    at my local hardware store.

    RC

    "James Sweet" <> wrote in message
    news:zISgd.514$BU6.365@trnddc05...
    >
    > "Raymond Cruz" <> wrote in message
    > news:wfNgd.730$o52.621@trndny03...
    > > I need to verify the location of the OD solenoid on my 88 240 AT wagon.

    I
    > > found a wire that is routed from the right rear of the trans in the area

    > of
    > > the fluid pan and drain, over the top to the left rear, and terminating

    at
    > > the top of a vertical cylindrical structure secured by two bolts to the

    > left
    > > of the fluid pan. I assume this cylindrical structure is the solenoid.

    I
    > > didn't see any significant deterioration of the wire.
    > >

    >
    > Yep that's the solenoid.
    >
    >
    > > Over a period of about 10 days the car completely lost 4th gear. The
    > > transmission, including fluid quality and level, seems fine otherwise.

    At
    > > first the problem was intermittent. The dashboard arrow always goes on

    > and
    > > off with the gearshift switch. From what I could glean from old NG

    > articles
    > > I assume this means the relay is good. My idea is to check whether

    > voltage
    > > to the solenoid goes on and off with the switch and if so I will assume

    > the
    > > solenoid needs replacing. Is this a reasonable strategy?
    > >
    > >

    >
    > If you have voltage at that wire then the solenoid is getting power. If
    > that's the case, remove it and try blowing through it before you replace

    it,
    > a new one is expensive, I think I have a good used one somewhere you can
    > have cheap though.
    >
    >
     
    Raymond Cruz, Oct 31, 2004
    #7
  8. Raymond Cruz

    Robert Dietz Guest

    In article <ieehd.911$fw2.285@trndny01>, says...
    <snip>
    > One unrelated question -- I decoupled the shift linkage by popping off a
    > snap ring that held a short shaft inside a hole on a metal plate. The hole
    > diameter is much larger that the shaft diameter so I think there probably
    > should be a bushing to take up the extra space. Anyone know what kind of
    > bushing belongs there? I might be able to find one made of nylon or brass
    > at my local hardware store.
    >


    Almost every Volvo dealer has them. They are cheap. Replace both the
    front and rear ones.

    Bob
     
    Robert Dietz, Nov 8, 2004
    #8
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