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problem: cooling down at high rpm

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Old 12-15-2004, 09:53 PM
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Default problem: cooling down at high rpm

I have a civic hb with a zc swap. The car does not overheat but when I step on it the temp gauge cools way down almost to 150. Then when I start driving normal the temp does back up to about 200. I have tryed replacing the thermostat but did not help any. Also, when it is cold like this it will not rev over 7000 rpm with a pg7 ecu. It seems like it starts cooling down at about 4500rpm. Could this be the water pump?
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Old 12-16-2004, 07:08 AM
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Default Re:is this the water pump?

Is it an aftermarket gauge? They don't work like factory gauges.
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Old 12-16-2004, 07:18 AM
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Default Re:is this the water pump?

yes, it is an autometer gauge. the only thing that really conserns me is that it won't rev over 7000rpm and makes it slower
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Old 12-18-2004, 06:55 PM
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Default weird cooling problem at high rpm

anyone have any idea's?
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