Thread: Big BB temperature fluctuation
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Old 04-09-2003, 07:21 PM
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Rick Parker Rick Parker is offline
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I had a problem with severe temprature fluctuation that was solved only by changing to an OEM Ford water pump with cast iron impeller. The stamped steel impeller that was in the one I had bought at the local parts house was causing cavitation at speed. Temp would spike at 230 then slowly return to 160 then take off quickly to 230 again. This would repeat itself constantly once the thermostat opened. May apply to your case too???

Hope this helps

Rick
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