Car Heater Blowing Cold Air Intermittently

Hello car talk nation, here’s my problem. Here’s some easy stuff for you to check.

Heres Why Your Car Heater Is Only Blowing Cold Air Protect My Car

You start it up and hit the heater.

Car heater blowing cold air intermittently. Two weeks later the car was overheating and the heater was blowing cold air when i was on the highway. Why does my car heater work intermittently? When you turn on the auto button, the a/c button lights up.

Perhaps your temperature gauge is running below normal. Sensor in the vent checks the temperature and tries. When you take your car to a mechanic for a car heater that’s blowing out cold air, a car heater that’s blowing cold air when idle, or a car heater blowing cold air intermittently, one of the first things they’re going to check is the thermostat.

Does the thermostat affect the heater? Air from the blower is not blow toward the heater core or the coolant does not flow through the heater core. When i got home, and checked the hoses again, the top hose (as going through the firewall) felt warm as it had, while the lower hose.

And you wait — and wait — but the heater just blows cold air. While idling, the heater blows but doesn't produce hot air. Imageopen in new tabzoom/print 4.

The wife's 2008 rx350 is having intermittent issues with the heater. You both have low coolant and have an air bubble in the heater core. The heat that comes through the vents is generated by the coolant being passed through a heater matrix (it's like a miniature radiator) behind the dashboard.

When your coolant isn’t flowing, your heater doesn’t have its heat source. I had it towed to the same mechanic and the car. A bad thermostat that isn’t allowing the engine to properly warm up.

A faulty thermostat (thermostat that is stuck) broken blower and/or blower motor I then shut off my car and ran my errand, and when i came back out the blower was suddenly working exactly the way it should. Looks like there is a problem with compressor , hence working intermittently.

If it’s where it’s supposed to be, proceed to step 2. If the ac starts out blowing cold air in the. Several underlying causes are there for which the coolant and the air.

As the engine warmed up, i could feel a slight bit of heat coming out of the heater vents but it appeared to be just coming out due to the hot air rising, not because of the blower. Remove the air temperature actuator screws. A blower fan that isn’t working properly.

Hello all.a few days back i bought a 04 g35x awd. Imageopen in new tabzoom/print 3. There could be various reasons for car heater not working but it basically happens for two reasons:

A few weeks ago my car started overheating and blowing cold air while i was on the highway. I have a 1995 honda odyssey that has a problem with the ac. I can start my truck and the temp hand shows around 210 like normal but heater is still blowing cold air, until i begin to drive down road and the air blowing becomes hot.

Add some coolant (with engine cold) and drive around for a while. There are many reasons your car's heater isn't working. First step is diagnosing the root cause of the lack of heat.

It will blow hot air then it goes cold. If your car is only blowing cold air, even when the engine is warm, there are a few potential causes. If it’s not full, fill it and check it again after you’ve driven the c.

It’s freezing outside, and all you want is to get in your car and turn on the heat. If it's not blowing hot air check the following: Maybe the fan is malfunctioning.

Disconnect the air temperature actuator electrical connector. I took it to my mechanic and he found that the radiator was leaking. And it doesn't matter if its in dual mode or if the temps are separate.

On the way out, as the engine got warm, the heater blew warm air. Ok your welcome , one more thing you may have air in the system now , and will need to bleed it out , for this you will need to get a radiator funnel remove the radiator cap install the funnel and start the car and let it run for about 20. A car heater blowing cold air could be a symptom of the failure of the heating unit.

The coolant is the component that flows through the engine cast, radiator, and. If the heater is blowing cold air and the car is overheating, it is likely that the problem is related to the engine cooling system as well. The following are some issues that may be causing the heater to blow cold air:

While your situation the problem is cold air, it may be how this system gets stuck in your car. Also, while driving suddenly it stops heating and just blows out cold air. Chevrolet silverado 1500 maintenance & repair

But due to that stopping, the entire way home, cold air blew from the vents. There could even be a puddle of liquid under the. Air temperature actuator replacement removal procedure 1.

The ac always blows cold in the back, ceiling unit, but the front vents blow cold intermittently. A heater can stop working for a number of reasons, including: Remove the steering column filler panel.

Ive noticed with the heater set on the hotter settings, when i idle it starts to slowly cool and blow cool air. Remove the fuse labeled hvac ctrl (batt). Both were warm to the touch.

A low antifreeze/water level in the radiator due to a leak in the cooling system. Also cars use flaps to regulate air mix from heater core (it is in your dash somewhere) to achieve correct temperature. No other warning lights are active on the display.

You can turn off and then turn back on and it stays warm for a bit and then after 5 minutes blows cold air? Sounds like compressor isn't working properly or heater vacuum is opening vent to heater core.try turning on ac and if it cuts on and off repeatedly every few seconds the freon level is not correct or high pressure switch may not be working make sure radiator fan comes on when ac is on.if all this is working properly check vacuum hoses to heater may be opening vent doors to. Check if the compressor is working.

Also after you park the car the fan on the rad keeps running for several minutes. I stopped, and felt both heater hoses. Contaminated coolant and low coolant levels in the vehicle are also among the most common reasons why your car heater blowing cold air and not getting hot enough.

The ventilation fans blow air over the matrix and into the car.

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