Temperature not going past Cold on thermostat! on 1998 Mazda Protege

My car sat for 2 weeks at the mechanic to have the serpentine belt replaced (in well below zero temps the entire time). I get it back, turns over, runs hard for a few blocks as fluids get moving again. Got it home and there was no engine coolant in the reserve. I'm noticing that my thermostat is not moving past Cold anymore. Put in new coolant, level has stayed for 3 days. I run an average 10 miles one direction. Still blows somewhat warm air with heat on. Sorry, no codes. Thoughts?

by in Kaukauna, WI on February 13, 2014
1 answer
ANSWER by on February 13, 2014
Possible still on coolant (leaking) and/or thermostat needs replacing. While engine is cold, check coolant level by removing the radiator cap. Add 'antifreeze' directly into rad. if needed!

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