After I start my car, my coolant warning light stays on for about a minute or so and then comes off. Sometimes, the warning light doesn't appear at all. Lately it's been appearing more. I have about 51,000 miles on the odo. I will probably drain and flush my coolant in the next 2 weeks due to the mileage. I'm guessing it's a sensor problem since my coolant level is normal. Any input is appreciated.
Thanks