Question about Subaru Legacy

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93 subaru legacy gt cuts out at around 100kph check engine light comes on, restart car and it is fine. car is a auto and doesnt seem to do it as much if car is in 3rd instead of drive

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Check The Vehicle Speed Sensors.

The Legacy has 2 Vehicle Speed Sensors (VSS): VSS1 is located inside of the transaxle; VSS2 is located in the combination meter assembly.

VSS1

  1. Disconnect the electrical harness from the transaxle.
  2. Connect an ohmmeter across the transaxle's electrical harness terminals 9 and 16.
  3. The resistance should be 450-650 ohms.
  4. After testing, reconnect the electrical harness.
VSS2
  1. Remove the instrument cluster from the instrument panel.
  2. Disconnect the electrical connectors and the speedometer cable from the instrument cluster.
  3. Connect an ohmmeter or continuity tester across the combination meter terminals 7 and 11.
  4. Insert a small screwdriver in the speedometer cable drive socket.
  5. Rotate the speedometer drive and note the continuity across the VSS terminal. Continuity should turn ON/OFF 4 times per speedometer drive revolution.

Posted on Nov 25, 2008

  • James Cheney
    James Cheney Nov 25, 2008

    PLEASE RATE THIS SOLUTION! Thank You Very Much!

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I suggest you to have a ELM327 OBD2 with bluetooth connection (around 10-25$ on internet stores) + torque app to your phone. cheap and works just fine for checking engine error codes, and resetting malfunction lights. I think you were lucky to find correct answer on the internet, because without any further inspection they all are nothing else but lucky guesses. (and changing different sensors randomly based on guesses willcome very expensive.) If you watch this video it explain why in situation like you have is hard find correct answer to a specific problem.
http://www.youtube.com/watch?v=iR18rCvsKlY

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