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Sounds like your thermostat is stuck open.
Does the car have a water temp gauge or a light. ?
If only a light let the car run for about 10 mins and feel the radiator hoses. They should be good and warm. if not I'd change the thermostat
Probably a plugged up heater core. You can try to disconnect the heater hoses from it and flush it out both ways with your garden hose. If that doesnt work you'll have to replace it.
No, Relays control the fan running. But you said it is running. Low coolant level, clogged heater core or sticking temperature door could be the problem. Is the engine running at normal temp? Open thermostat could cause low temperature.
First, check to make sure the coolant level is full...if not, it will bypass the heater core. Next, try replacing the thermostat and radiator cap. These are both inexpensive, and it's a good idea to replace them periodically. Finally, you may need to replace your heater core. Unless you are mechanically inclined, this is something best left to a mechanic. The difficulty of changing this ranges from vehicle to vehicle.
Considering that your vehicle is only 7 years old we can rule out any clogging in the heater core. I would suggest having the heater control vavle which cuts into your heater hose in the engine compartment check or replaced. This controls the volume of coolant flowing through the heater core. Thank you, Dana
- If temp guage reads normal, the lack of heat may be due to the Heater Control Valve. Located in front of the radiator. Lower passenger side. A real bugger to replace.
- The plastic cap just over the thermostat is key in re-filling the anti freeze and bleeding air.
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