Can't figure out why there's no heat?

Answer 1

You may be low on coolant. There can be enough so that the car does not overheat, but not enough to get to the heater core. If the coolant level is okay and you still have no heat, with the engine warmed up and running, open the hood and grasp both heater hoses one at a time with your hand, if one hose is warm or cold and the other is hot you probably have a clogged heater core in which case you can flush it out with the garden hose. If both hoses are warm or cold you probably have a stuck open thermostat , replace it. If both hoses are hot you probably have a problem with the temp blend door in the duct work.