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1987 Toyota Celica overheats when air conditioning is turned on

Toyota Celica overheats when the air conditioning is turned on. Problem just started.

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The first thing to check is that the engine cooling fan comes on when you turn on the air conditioning, then you should check the condition of the radiator fins. If they are clogged with debris (dead insects, leaves, etc...) then you will need to get a pressure washer onto it through the front grill and try to blast it clear.

When you switch on the aircon, it puts extra stress on the engine, which causes the fuel economy and engine power to drop, and as a result the engine will naturally run hotter, so it needs a bit of help to cool down in the form of the engine cooling fan.



Posted on Jun 09, 2008


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