Speedometer died on 98 Outback Legacy

You need to grease the speedometer cable

something has come undone in the coupling between the transmission and the transfer case
may be a wire connection has fell apart

You could have a bad speed sensor you have a check engine light on get it scan and most likely you gonna have a bad speed sensor

Can be loose speedo wiring connectors under instrument panel or its issue with speed sensor on transmission.

I suggest you to go through help links mentioned below with appropriate solutions to confirm the problem :------

How to trouble shoot speedometer?

http://schematicsdiagram.blogspot.com/2011/06/speedometer-not-working.html

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1996 fiat bravo speedometer not working?

http://technoanswers.blogspot.com/2012/01/1996-fiat-bravo-speedometer-not-working.html
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Speedometer works but odometer not working?

http://technoanswers.blogspot.in/2012/01/speedometer-works-but-odometer-not.html

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Speedometer runs backward?

http://technoanswers.blogspot.com/2012/01/speedometer-runs-backward.html

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Warning lights on and speedometer died?

http://howtobyme.blogspot.com/2011/08/warning-lights-on-and-speedometer-died.ht

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Speedometer not working on 1993 Ford F350?

http://repairhelpcenter.blogspot.in/2012/02/speedometer-not-working-on-1993-ford.html

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ABS & Brake lights warning indicator steady on dash and speedometer not working for Dodge Ram?

http://howtobyme.blogspot.com/2011/11/abs-brake-lights-warning-indicator.html

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Vehicles Cluster panel Not reading Miles?

http://schematicsdiagram.blogspot.com/2011/12/vehicles-cluster-panel-not-reading.html

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Odometer works properly but speedometer works intermittently?

http://technoanswers.blogspot.com/2012/01/odometer-works-properly-but-speedometer.html

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These will help.
Thanks.

the speedometer/odometer problem sounds like the vehicle speed sensor, which is ususally found on your front wheels, the stalling out sounds like an unrelated problem, but i couldnt tell you where to start for that one

do you have battery power will the car turn over
there is a set of fuses in the engine compartment check these as many cars have a system that allows the car to run till the battery dies check your alternator

if both go then its the sensor ,but if car is a 98 then it could be a cable or a speedo cable crive worn out

Yes your speedometer, and odometer are controlled by your speed sensor.

Although you didn't mention it, the speedometer probably bounces also. Replacing the speed sensor on the side of the transmission should solve both your problems. Good luck

I finally fixed mine, on my 1999 Subaru legacy 30th anniv edition. . .

I removed the speedometer head, and resoldered the green connector on the board. Then I also ran a wire to duplicate the trace wire from the middle pin to the first connect (about 4mm). Problem gone.

email for more details if interested: mike(at)whiteley.org