I'm not quite sure I understand your question. If you are saying that the car overheats under 3000 rpm, particularly when the car is at a stop then the problem will be that you either have inoperative cooling fans or the radiator is very low on coolant. If the engine temperature decreases as the car picks up speed and airflow over the front of the car increases then the probability is that the radiator fan is not working. If you have air conditioning, you can turn it on and see if the engine temperature drops. The air conditioning will automatically turn on the condensor fan and that will cool the engine. If that happens, it will confirm a bad radiator fan motor or fan temperature switch that turns the motor on.if the problem is with the flow of coolant where the water pump doesn't move enough coolant through the engine until the engine speed is at 3000 rpm, then you're probably low on coolant. You can check the coolant level in the overflow bottle when the engine is COLD. never open the radiator with a hot engine. If the coolant level in the overflow bottle is low, take the radiator cap off and see how low the radiator is. Obviously, add water if it is low, then check arount the top of the radiator for signs of white chalky stains. if there is a white residue around the top plastic tank, there's a good chance the radiator is leaking and it will have to be replaced.finally, on that car the timing belt and water pump were usually replaced every 7 years or 105,000 miles. If the water pump wasn't replaced and the coolant system flushed and the coolant changed, it may be that the water pump is worn or the timing belt is worn or both. That would be less likely than the radiator fan (highest probability) or the leaking radiator (high probability)hope that helps
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21 Oct 2007, 06:18 am
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