How do I tell if the Throttle Position Sensor is good or bad?

Asked by Jun 27, 2013 at 10:59 PM about the 1994 Subaru Loyale

Question type: Maintenance & Repair

Seems to idle ok.  Has a mild skip.  Did full tune up.  But when you accelerate going up a hill it breaks up. Motor on level ground seems to run good.  On an incline motor hesitates.

1 Answer

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You could use a voltmeter to measure the sensor output while the engine is not running but the key is on. It should steadily increase as the throttle is opened.

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