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Is this a problem? (cooling)
Since 1995 my 1994 Grand Am has ran at 160 F. The exception being the more difficult drives (ex: rush hr when it is 100F out and mountain driving).
Last March it started running a tiny bit warmer (160F-180F). Then in the last few months started roving between 160F-220F depending on the driving conditions. It will stay at 160F if I am not stopping and starting (continuous highway or street driving). I recently took it into the shop to have the cooling system flushed and they also informed me that the fan is working fine. It's supposed to kick on at 210F according to them. Another strange thing is when it runs at 220F the temperature seems to go down quickly when starting from a stop or turning.
Is this a normal occurence with high mileage older cars or could it be a symptom of a problem (water pump, thermostat, temp sensor)? It has never overheated and does not leak coolant. Overheating is considered 280F on my car's temp guage. It also doesn't go through antifreeze very fast. Maybe 16oz in 5 months.
Thanks
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