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please help!

  1. General Maintenance, Troubleshooting & Accidents.
    Hi there. I just registered and dont know how to use this site properly. My Impreza TS 2002 is Hesitating and jerking in low RPM, burns more gas than usual and codes P0172 and 1137 came up. It works fine on high speed. I would appreciate any help in an easy understanding English. Fuji...