Asked in Ford RangerThermostatsFord Ranger XLT
Why does my Ford Ranger thermostat act like it is stuck open all the time and will barely heat?
August 03, 2012 3:12PM
you probably need to flush system including heater core.
I have the same problem, I replaced thermostat twice, flushed system and replaced sensors, it did not fix problem, still searching for an answer.
^^^^ To this guy, its probly your Coolant Temp. sensor.