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my fiance has a 96 lexus es 300 and when your sitting at a red light while the A/C is on for about 2-3 minutes , her car starts to overheat and its not losing any water soo what could this be , and i know this is civic forum but i just need some advice before i start to throw some money into it to find the problem

 
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Blown head gaskets don't always consume coolant.

when she's sitting at the light, does her radiator fan come on?

 
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yea the fan comes on and goes off like its supposed to thats why im having a hard time trying to figure it out

 
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I'd rent the sniffer from autozone then, I'd bet the head gasket is blown.

Try to include the topic of the thread in it's title, you'll get more responses that way, I just edited it for you.

 
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ok i will and thanks

 
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does it overheat without the a/c on?

 
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no not at all thats why im having problems trying to figure it out