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In a 2005 Toyota Corolla, you can find the egr valve on the right side of the engine block below the air filter housing. It's crucial to change the coolant every 60,000 miles and replace the air filter every 15,000 to 30,000 miles. Spark plugs should generally be replaced at 100,000 miles, but copper spark plugs need changing every 30,000 miles. Common engine issues include loose gaskets, spark plug dislodgement, oil leaks, and excessive oil consumption, all requiring prompt attention. Overheating is a severe concern as it may lead to fires and potential explosions.
You can locate the EGR valve for a 2005 Toyota Corolla on the right side of the engine block underneath the air filter housing.