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Old 12 Aug 2013, 02:48 am
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Default Why is my 1996 Honda Passport still overheating?

I have replaced the thermostat (and experimented running without the thermostat), flushed the radiator, and replaced the water pump. I had some leaks, which have all been fixed. It's not leaking anymore; but it continues to overheat. Any ideas on what I could check next?
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Old 12 Aug 2013, 03:02 am
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The possibilities are endless but don't give up. Here are some causes:































Faulty radiator cap















Collapsed radiator hose















Slipping water pump belt















Plugged radiator















Plugged heater core















Late ignition timing















Electric fan not turning on































Put the thermostat back in. The anti freeze flows by the radiator faster and doesn't allow it to cool fast enough.































You could use a summer thermostat after you fix you problem like a 160 degress















































Good luck!
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Old 12 Aug 2013, 03:16 am
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Perhaps your radiator is clogged? Is it the original one?































Also do you have electrical fans? Are they coming on?
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Old 12 Aug 2013, 03:32 am
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Hi, I am a Honda technician. I would pressure test the system. Make sure the radiator is holding pressure. Make sure the radiator fans work. And check for a crack or blown head gasket. I had a similar problem last week on a Civic. It had no leaks and such. But still over heated. Turned out to be a blown head gasket. So I did that and replaced the timing belt. ;-)
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Old 12 Aug 2013, 03:48 am
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Check the cooling fans to make sure they run. You have a thermostatic fan clutch. It slips when cold but locks when hot. With engine cold the fan should be slipping or not running. When warming up the fan should engage. Before it overheats observe the fan if it is not engaging then the clutch is bad. Also check for leaks as the clutch can leak.
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