I've noticed on my 94 Integra (bought used about 2 weeks ago) that the thermostat is often below cold, sometimes above cold but never up to the center mark.
Today I was boiling inside my car as it was a very hot day and my thermostat was below cold for the engine. Any ideas whats up? From searching it seems like the thermostat might be broken but I don't understand why sometimes it goes above cold.
EDIT: I guess I should be more specific: I've noted that the engine temp reads below C even after 30+ mins of driving. Sometimes it will be around 1/3, but usually its below C even when I've been running for quite a while