Question about 2004 Hyundai XG350
You can not adjust rpm's, it is controlled by the engine computer. if you idle is not right, either your throttle position sensor is not right, or your idle air control is malfunctioning, although there can be numerous other causes for erratic idle (vacuum leaks, throttle body or air filter needs servicing, etc.).
Posted on May 23, 2011
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Posted on Jan 02, 2017
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