Tip & How-To about Heating & Cooling
One main thing to try when trying to diagnose the heating system is to find the heater hoses. You want to start with a vehicle that has cooled down. Start the vehicle and feel the hoses. There should not be any change in temperature in the hoses until the engine reaches the 210 mark or whatever your vehicles normal engine temperature is. If there is a change before that mark then the thermostat is bad and needs to be replaced, it also needs to be replaced it the hoses never heat up. If the thermostat works fine next is to check the heater block. You can do this by feeling the upper and lower heater hose for a difference in temperature. The upper hose is always hotter than the lower but there should not be a significant difference. If there is a large difference in temperature. Than the heater block must be replaced.
Posted by bryanmille... on
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