BASIC Troubleshooting
My 1997 LHS doesn't seem to be putting out the heat that it should on these cold winter days (just below freezing). I notice that the temp gage reads much closer to the "C" end of the range than to mid-range (see sketch below). I checked the coolant level in the reservoir and it seems to be fine.
Might this be a thermostat problem? If the thermostat was stuck open would it cause these symptoms?
TEMP GAUGE:
| C . . . | . . . H
(This is after driving the car for >30 minutes.)