Q: Replacing the thermostat on a suburu legacy outback;-is it a same day fix?

asked by on August 26, 2016

The temperature needle on the dashboard keeps going up if I am going between 10 and 20 mph. If I maintain 30 mph or over, temp remains normal. When stopped for a prolonged period of time with the engine running, or said 10-20 mph, needle climbs up. I have been checking coolant fluid reservoir at a normal level. Haven't seen steam or boiling liquid yet.

My car has 180025 miles.
My car has an automatic transmission.

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