Question about 2001 Mitsubishi Mirage

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Problem with air conditioning on 2001 mitsubishi mirage. "Sometimes" will not blow cold, just hot. Coolant level ok. Usually will will start blowing hot after runnning air while car is stopped at idle. Sometimes it is days before it will just start "working again". Happening more often as time goes on.

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The air conditioning system has most likely drawn moisture this is not good take it to have the system recovered and a new restrictor valve put in. leak checked and recharged

Posted on Jun 22, 2009

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My 2005 gmc seria heater will not blow hot air


There are a number of possibilities.
First, its the level of coolant in the radiator full?
Low coolant level will cause this, because the heater is higher than the engine, so air can rise to the heater and form an air-lock.
Second, is the thermostat good?
A thermostat that is stuck open will not make heat for the heater.
Third, the control valve may be stuck or broken, not allowing the hot water to flow to the heater core.
Usually these are vacuum operated, and usually found under the hood.
God bless your efforts.

Oct 26, 2015 | GMC Cars & Trucks

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The heater will only blow cold air. THe engine is warmed up but no hot air is being produced. What is the problem?


Start simple, check the coolant level, if it's too low, hot coolant won't reach the heater core, resulting in no heat. If the level drops further, the engine overheats. So check the level 1st, if it's ok, what does the engine temp gauge indicate? Is it running cold, normal, hot?

Feb 28, 2010 | 2001 Buick LeSabre

1 Answer

When you turn on the heat--hot air blows out for a few minutes than it blows out cold air.What could cause this????? 2002 chrylser sebring convertible.


low coolant level can cause this condition, when the engine is cold, check your coolant level. if it is full you may have a bad head gasket, have that checked by your favorite repair shop

Dec 06, 2009 | 2002 Chrysler Sebring

3 Answers

2001 Dodge Caravan heater blows cold air when stopped


Have you checked the coolant level? What you describe is exactly what happens if the coolant level is low. When stopped at idle, hot coolant is not circulating through the heater core, so no heat. As the engine increases in rpm's when you pull away from the light, the water pump is spinning quicker, and some coolant is making it to the heater core. So check the level, and if it is low, keep an eye on it to see if it drops again. That of course indicates a leak somewhere. Get it fixed, as overheating the engine leads to costly repairs and worse case a new engine. Let me know how you make out with this.

Dec 05, 2009 | 2001 Dodge Grand Caravan

1 Answer

The heater does not blow hot air just cold air all vent controls work.if running air conditioning can control temp with the hot cold control


The first thing to check is the coolant (antifreeze) level in your radiator. If this level is too low it could cause your heater not to blow hot air. Check this when the engine is cold by removing the radiator cap. Do not remove the radiator cap when the engine is hot. If you do, you run the risk of getting scalded by hot water and steam that can shoot out the top of the radiator. The radiator should be completely full. If it's not, fill it up with a 50/50 solution of antifreeze and water. Also make sure the radiator overflow tank is filled up to the full mark. This is usually about halfway up the tank.
If your coolant level is ok I suspect you may need to replace the thermostat. It may be sticking shut and not letting hot water get to your heater core, or it may be sticking open and preventing your engine from reaching its normal hot operating temperature. A thermostat is relatively inexpensive and usually easy to replace. Just make sure you follow the instructions and put it in facing the right direction. If the thermostat is ok then you may have a blockage in your heater core. Replacing a heater core can be a difficult job on some car. If this is your problem I recommend taking the car into a garage to have the repair done. I hope this helps you out.

Nov 16, 2009 | 1998 Ford Taurus

1 Answer

The air condition works great.When it got cold out i tried to put the heat on and it blows out cold air I changed the thermostat and still the same problem.


Check the coolant level, and flow to the heater core. You can check the flow by seeing how hot the heater hoses are. If they are getting flow and coolant level is ok, then you may have an air pocket in the cooling system, these have a bleeder on the t-stat housing to allow you to bleed the air out of the cooling system. If this is ok, then you may have a faulty temp blend door, blend door actuator, or cable.

Oct 17, 2009 | 2002 Mitsubishi Galant

1 Answer

Why doesn't the heater blow hot air?


If your "Check Engine" or "Service Engine Soon" light is on, you need to have that checked out first.
If not, the next thing you should check is your engine coolant level. (Antifreeze) If the coolant level is low, the engine coolant does not circulate through the heater core and the the heater doesn't work. The coolant level could be low for a number of reasons including a leaky hose, water pump, or head gasket. In any case, if it is found to be low, you need to find out why.
If the coolant level is OK then the thermostat function needs to be checked to make sure that the engine is reaching operating temperature.
If all of the above checks out OK, then the heater control valve and/or the blend air door in the HVAC housing needs to be checked for proper operation. (NOTE: some cars are not equipped with a heater control valve)

Oct 10, 2009 | 2001 Hyundai Accent

1 Answer

2001 pt cruiser no heat


did you check the fluid level by removing the rad. cap? Radiator should be full to top. If Chryslers are low on coolant, the heater will not blow warm air.

Jan 04, 2009 | 2001 Chrysler PT Cruiser

2 Answers

Heater blows cold air


I had the same problem with the heater only working when accellerating. Found the overflow tank pick up tube was kinked. This of course made my coolant level low. So when the cars hot the coolant would push into the overflow, but when the car cooled the kink would prevent it from flowing back to the radiator.

Dec 05, 2008 | 2001 Mitsubishi Eclipse

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