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Q: My car engine just started knocking or pinging

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My car has been having overheating issues...when it over heats the car dies temporarily

My car has 136000 miles.
My car has an automatic transmission.

A: If you have been overheating your engine ov...

If you have been overheating your engine over and over, then it will cause damage to the heads and engine. Look at the oil to see if the oil has coolant in the oil. It sounds like you now have a lower engine knock and pinging is from the car running hot. Have a mechanic check diagnose the overheating issue in person to pinpoint the problem and make the appropriate repairs.

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