Question about 2006 Toyota Corolla

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I have a Toyota corolla 2002. It is only 56'000 miles. Recently the gas mileage becomes so bad. It gives like 21 MPG. There is no check engine light. I changed the air filter and checked out the sparkles with out any improvement.

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  • mitchfarms Aug 11, 2008

    My '98 Toyota Tacoma 4X4 (6 cyl) (300,000 kms) has started using double it's usual amount of gas. I changes the fuel & air filters, spark plugs & spark plug wires. No warning lights come on. Power is fine. The garage says my oxygen sensors are fine but don't know what to do to solve the problem. Any suggestions? Thanks

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I have seen this problem countless times, and no computer can give you the answer, The problem is your ECT. The Engine Coolant Temp sensor. It tells the computer what temp the engine is at and it uses this input to regulate the fuel. When the engine is cold, the fuel is increased to act as the choke for easier starting. As the engine warms up, the fuel is cut back. When the sensor locks cold, the computer runs the engine in choke mode all the time, sending the fuel ecom\nomy down the toilet.

Posted on Aug 12, 2008

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