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Re: car heating is broke
The heater switch on the dash activates a valve allowing hot water into the heat exchanger under the dash. I think the valve is not opening so the heat exchanger stays cold. The linkage could be faulty or the switch could be faulty.
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It could be your heating coil. It seems that your fan is running (at least to the outside vents). Since your temp. is fine there is probable not a problem with your coolant. As far as it not blowing through the vents in the middle couldn't tell you.
no the thermostat must be working or your engine would not heat up, check to see if your heater hoses are hot if only one is hot you need a heater core, but check your coolent level if the van gets low on coolent it will not let any get to the heater thehope engine keeps it all to keep the engine cool....hope this helps
when you start the car and let it warm up, does it reach normal operating temp.? Does the needle stay in the middle? If not, it's time to replace the thermostat. If it's ok, then your blend door is stuck or broken and may need replacement or repair. when you move the control to hot or cold, the blend door opens accordingly allowing cold hor hot air in.
Your heater core could be blocked. Check the hoses going to it on the inside of the engine compartment. There will be 2 5/8' heater hoses going into firewall adjacent to one another. The tempature of these hoses should be almost the same after your van has reached normal operating tempature and your temp select switch is on hot(heat). If not it's a good idication your heater core may have some blockage in it. You would then have to flush it out or replace it. Hope that helps.
My 2005 Nissan Sentra 1.8s with 55,000 mi. blows cold air from the heater. Coolant not circulating in engine. Lower hose stays cool to touch. Both heater hoses cold. Changed thermostat - didn't fix it. Coolant not leaking or dirty. None in oil - no oil in radiator. Changed worn water pump belt - pump spins freely with no noise or resistance. Cooling fans come on after warm-up. Temperature gauge stays in normal range then jumps to hot and back again. Coolant good to 10 below - didn't freeze here yet. No other problems or repairs to car. Afraid to drive and make worse. Help!