Q: check engine light on and racing engine
Check engine light just came on and engine is racing
My car has 85000 miles.
My car has an automatic transmission.
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You will need to have the Check Engine Light tested and the codes diagnosed to find the cause of the high idle. Since you say you are experiencing a racing engine, you may have a bad throttle position sensor or idle air control valve. Only the test can reveal the problem and isolate the cause. If you need help with this, a professional technician from YourMechanic can diagnose your Check Engine Light and make any necessary repairs or adjustments.
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