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Re: 2001 Aurora - blows only 'warm' air
Your problem is either a clogged heater core, or the air temp control blend door actuator, in order to check for a clogged core feel the heater core hoses in the eng compartment, they should both be hot, one a little hotter than the other, if they are the core is ok and the blend door actuator needs to be replaced.
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You have (at best) blown a head gasket, or (at worst) cracked the block of the engine.
Cars today, being mostly aluminum, break in this manner rather easily.
Repairs will cost you many hundreds or a few thousands of dollars. The car cannot be used until the engine is repaired.
God bless your efforts.
First check to see that the cooling system is properly filled.
Next, watch you engine temperature and see that it hits operating temperature. If the thermostat sticks open the engine will never get up to normal temp. On my Aurora, that is exactly midway on the temp gauge.
Hello. The most common reasons for a heater not working are:
1. Blown fuse.
2. Blown heater/AC relay
3. Thermostat stuck in one position so heat does not circulate through the heater core.
That said, begin by checking your fuse panel[s]. IF it is a blown fuse just be sure to replace the blown one with a new one of the same AMP rating.
If you have no blower it is probably the relay. Go to any Auto parts store and they will sell you a new one, and tell you where the old one is located under the dash. All you do is unplug the old and plug in the new.
If the blower is blowing cold air, the thermostat needs to be replaced. You can do this yourself at many auto parts stores they loan tools and advice. OR call around for a firm estimate to replace the thermostat only. It is a 5 minute job.
Do the fan(s) come on when hot? Blow out the radiator core with compressed air (from the engine side) to clear it of bugs and other debris. Make sure the radiator is full to the top (when cold) and check the radiator cap seal rubber and the over-flow tank and tubing for leakage. It's possible that the water pump impeller is slipping on it's shaft and not pumping water properly. Remove the thermostat temporarily and remove the radiator cap. Remove some of the water so that the level is somewhat below the cap bottom, then start the engine and watch for rapidly moving water. That will show that the pump is moving water well. Allow the engine to heat up and keep track of the water movement. Shut the engine off at low end of 'normal' on the temp gauge and replace the cap so that it doesn't blow out boiling water into your face. Replace the thermostat and top up the water when cold again.