Voted Best Answer
Jun 01, 2023 - 09:53 PM
Hi there,
The usual suspects for a high idle at random instances are a bad idle air control valve, vacuum leaks, faulty throttle position sensor, bad mass air flow sensor, faulty engine coolant temperature sensor, and fuel system issues. Click this link for more details about the high idle speed from our Carparts knowledge database. It is best if a diagnostic scanner is used to isolate and identify the part that needs to be replaced. The usual code that appears is P0507. Click this link for more info about it as well. I hope this helps!
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