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The car can begin to overheat because it is low on oil or antifreeze/coolant. Your radiator can also be acting up. It is best to address this as soon as possible and not to let it go.

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Q: What would cause the temperature gauge to go up?
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Related questions

What would cause a 96 Honda accords temperature gauge to go up and down?

Could be your thermostat or your anti-freeze

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