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Old 07-18-2011, 05:52 PM   #1
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Default 2001 buick regal ls coolant temp high

Coolant temp will reach 240 deg. F at idle. coolant level is good. Both fans are running. Any Ideas?
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Old 07-18-2011, 06:41 PM   #2
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How old is the coolant? You may want to try a coolant system flush.
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Old 07-18-2011, 07:33 PM   #3
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Sticky thermostat.
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Old 07-18-2011, 07:37 PM   #4
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coolant is about 6 months old.
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Old 07-19-2011, 08:44 AM   #5
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i usually try to clean the rad fins and cond coil too. i take the fans out and spray it with simple green and back flush it with a hose.
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Old 07-19-2011, 09:30 AM   #6
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240 on a gauge or a scanner? Our gauges aren't the most accurate and scanning may show that the temp is around 230F. In traffic that is where the fans are programmed to run in high speed mode.
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Old 07-19-2011, 10:58 PM   #7
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fins and coil look clean. read 240 deg. on my scanner. Also noticed that when I shut it off it seemed to bubble back into reservoir. This worries me!!! Any suggestions need help. Could this be head gaskets?????
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Old 07-19-2011, 11:17 PM   #8
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going to go buy a new radiator cap and thermostat in the morning and try this.
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Old 07-20-2011, 09:02 AM   #9
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You are on the right track. HG'* are very uncommon. Meaning you have a better chance of driving off a cliff, getting struck by lightening and married all at the same time.
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Old 07-20-2011, 06:47 PM   #10
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Tried new radiator cap and thermostat and this did not help. Still running HOT. Must be head gaskets. Anyone know what this might cost????
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