Question about 2001 Hyundai Elantra

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Idle control and throttle position sensor

I check my car because the idle was going up and down whe the car is in park. so the mechanic said it was the idle control vlve and the mis fire 2. then i check it again the machine said it was the throttle position sensor . it can be both .

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It could be both. You can test both with an ohmmeter. Missfire is usually do to faulty plug wire or bad plug. If not idling correct, then the idle control valve or 02 sensor is faulty. If missfiring or popping during acceleration would indicate faulty throttle position sensor.

Posted on Sep 30, 2009

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Yes it can be either of these

Posted on Sep 30, 2009

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