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03-12-2013, 02:12 PM | #20 |
Returning to Toyota
Drives: 2013 L 3dr MT Join Date: Mar 2013
Location: Nashville, TN
Posts: 154
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Yes, I believe it is because the rpms are so low. The ECU is trying to save as much fuel while idling as possible. 600 RPM is very low for a 4 cylinder engine. If the air needs to come on, or if the battery charge is getting low the ECU will boost the RPMs, it also will not idle that slow when it is cold. Now, if you are getting a check engine light you do have a problem. To be sure you could have the engine codes read to see if there are any issues.
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