Question about 2004 Toyota Celica
It sounds like a misfire when you explain the lack of power and the overheating could be from a leak in the system from a radiator cap that is bad. A 50/50 coolant water mixture boils at about 236 degrees Farenheit at ambient pressure. For every pound of pressure added to the system raises the boiling point 3 degrees. So a radiator cap with 10 lbs of pressure will raise the boiling point to 266 degrees. My point is that a bad cap releasing pressure instead of holding can over heat an engine very quickly. Just a reminder, never remove the thermostat on any computer controlled vehicles. The systems of today are made to run efficiently at 195 to 210 degrees Farenheit. Removing the thermostat will "trick" the ECM in to thinking the car is still warming up and it will never get out of that mode causing a richer fuel mixture and advanced timing that can result in overheating, a clogged catalytic converter, etc. I would replace the plug wires because they can go bad without any visual damage and replace the radiator cap to start. Turn on the A/C with the temperature setting on high/hot so the engine warms up gradually. Let me know any other information you may have so that I can assist you further. Is there any other information you can give me?
Posted on Jul 04, 2010
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Posted on Jan 02, 2017
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