jetpilotdc10 Posted December 7, 2013 Share Posted December 7, 2013 As the title says, my 93 Loyale has an erratic Idle. Anywhere from 1100 to 2400 rpm. It will idle at a consistent speed for a minute or so, and then the idle speed changes. On rare occasions it will do the 'ol rev, drop.....rev, drop....rev, drop. This is my 1st Subaru so I'm not quite sure where to start with this one. My best guess is Throttle Position Sensor. Any info on how to test it? Any suggestions/shared experience is greatly appreciated! Quote Link to comment Share on other sites More sharing options...
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