Skip to content

Why does my heat not work in my dodge ram 1500?

The most common reasons a Dodge Ram 1500 heater isn’t working are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.

How do I reset my Dodge heater?

Best Answer. Blower on low, hold air recirculation button in for 10 seconds, release, hold it in again until the recirc light flashes (about 10-15 seconds), release. It resets the stupid computer that has glitched.

Why did my heater in my truck stop working?

Causes of a breakdown

A heater can stop working for a number of reasons, including: A low antifreeze/water level in the radiator due to a leak in the cooling system. A bad thermostat that isn’t allowing the engine to properly warm up. A blower fan that isn’t working properly.

How do I know if my heater core is plugged?

Heater core failure symptoms

  1. Weak or no airflow.
  2. Cold air (not warm) coming through the vents when the heater is on.
  3. Coolant leakage visible inside the cabin or a damp smell.

How do I fix the heat in my truck?

Heater core failure symptoms

  1. Weak or no airflow.
  2. Cold air (not warm) coming through the vents when the heater is on.
  3. Coolant leakage visible inside the cabin or a damp smell.

Why does my Dodge Ram not have heat?

The most common reasons a Dodge Ram 1500 heater isn’t working are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.

Will low coolant cause no heat?

First, check your coolant level to be sure there is enough liquid in there to even get to your heater core. If your radiator is very low on coolant, you’ll get no heat. If your levels are okay, you either have a bad water pump or a thermostat that isn’t opening.

Can a blown fuse cause heater not to work?

Faulty Wiring or Blown Fuses

Similar to your broken HVAC controls, your car’s wiring could be broken or have a short in it. This would mean the heater isn’t triggered when the driver commands it to function.

Why is the heater in my truck blowing cold air?

Low Coolant Level

The coolant (usually a mixture of water and antifreeze) in your engine doesn’t just work to keep the engine from overheating: It’s also the source of heat supporting the heating system. If there isn’t enough coolant in your system, the heater core will blow cold air into your car.

Why is my heater core hoses not getting hot?

Clogged Heater Core

If the heater core becomes clogged up, coolant cannot flow around the heating matrix, radiator and engine, and can therefore not be used to heat the cabin. If you suspect the heater core to be clogged, a flush of the system will be necessary to restore it to working order.

How do you unclog a clogged heater core?

Clogged Heater Core

If the heater core becomes clogged up, coolant cannot flow around the heating matrix, radiator and engine, and can therefore not be used to heat the cabin. If you suspect the heater core to be clogged, a flush of the system will be necessary to restore it to working order.

What happens when a heater core goes bad?

A low coolant level (caused by a leaking heater core) can lead to overheating and possible engine damage. Even a clogged heater core has the potential to obstruct coolant flow enough to cause overheating. A low coolant level (caused by a leaking heater core) can lead to overheating and possible engine damage.

Why does my car heater not work?

Low coolant: Whether caused by a leak or water evaporation, low coolant is the most common source of poor heater output. Thermostat: A stuck-open thermostat prevents the engine (and coolant) from heating up. Heater core: A clogged heater core restricts coolant flow, giving up little or no heat.

Why is my heat not working?

Dirty and clogged filters are one of the primary causes of furnace problems and can cause high operating costs. The heat exchanger can overheat and shut off quickly when filters are clogged with dust and dirt. This also causes soot buildup on the heat exchanger, which makes your furnace run less efficiently.

Why is my furnace not blowing hot air?

Troubleshooting Furnaces Not Blowing Hot Air

Check batteries of your thermostat and replace the drained or faulty one. Check the fan settings on your thermostat if they are set to “auto” instead of “on”. Make sure someone else has not set your thermostat to a lower temperature.

Where is heater control valve located?

The heater control valve allows the flow of coolant through the heater core to be controlled and switched on and off without affecting the operation of the rest of the cooling system. It may be located on the inlet or the outlet port of the heater core and activated by a cable, electronic control, or a vacuum signal.

Does coolant go to heater core?

As coolant circulates through the engine, some of that hot coolant passes through the heater core in the dashboard. As you use the temperature controls on your dashboard, your blower fan then moves the warm air to where you need it, for defrosting your windshield or heating the interior.

How much does it cost to flush a heater core?

A heater core flush service will cost around &amp, $79-$89. Flushing the tubes of the heater core can allow for the coolant to flow more smoothly especially if the heater wasn’t working as well as it usually would.

Where is the heater core on a 2013 Dodge Ram?

The heater core of the Dodge Ram 1500 is contained within the dashboard of the truck.

Can a stuck thermostat cause heater not to work?

A faulty thermostat could be behind your car’s heater not working. If it isn’t opening up to let the coolant flow through it, the core can’t produce heat. Thermostats can also get stuck open causing the engine’s temperature to stay low.

Will adding antifreeze help heat?

Adding coolant does nothing to address the problem that caused your engine to overheat in the first place, but it often allows you to drive safely to the nearest repair station. “A professional will need to inspect your car’s cooling system,” says Reina. While driving, keep an eye on the temperature gauge.

Does antifreeze help with heat in car?

Your car uses coolant – usually made up of 50% antifreeze and 50% water – to cool your engine down, especially during the hot months of summer. During the winter when you crank up your heat, the coolant is brought over from the engine to the heater core that then blows warm air into your car.

How do I know if my heater fuse is blown?

You may also need to use your multimeter to check if your fuses are blown. You can quickly determine by checking resistance with a multimeter. A good fuse will have nearly zero ohms of resistance, if the fuse is blown there will be no reading.

What fuse is for the heater blower?

To protect the blower motor power circuit, a 20-, 25- or 30-amp fuse is usually located in the fuse panel under the dash. The rating of the fuse will depend on the vehicle application and how much power the blower motor requires at full speed.

Where is the fuse for the heater?

Fuses. If your furnace has a fuse, it will probably be located in the control box with the blower.

Why does my heat only work when I’m driving?

Your Coolant System May Be Airlocked

If your heat only works when driving, this can also be caused by air pockets. Air pockets within the cooling system can prevent adequate coolant circulation and are sometimes the result of low coolant or a faulty radiator cap.

How do I know if my thermostat is bad in my car?

One of the first things you will notice is the temperature gauge is higher than normal. It may even start to fluctuate frequently. If you notice the gauge is hovering ¾ of the way from the top, then your thermostat is experiencing damage in the form of overheating. This can soon lead to your engine and car overheating.

Why would my car overheat but the heater blows cold air?

This can have a number of causes, with a faulty radiator cap being the most common. If you notice your engine is overheating, it also could be a blown head gasket, which is much more serious. Air bubbles in the cooling system can cause your heater to blow cold air, but they can do much worse if left unchecked.

Why is the heat in my car warm but not hot?

The lack of heater function could have 5 causes: the engine is not getting up to correct temperature (center of the gauge) due to a malfunctioning thermostat, the heater control valve is not letting enough hot coolant into the heater core, there is a restriction in the heater system that is preventing adequate hot …

How can I make my car heater hotter?

There are block heaters that warm the engine oil and block heaters that warm the coolant. So you can plug your vehicle in overnight or have it set on a timer. This means you can start warming up the engine a few hours before you plan to leave. There are even thermal heat blankets available for engine bays too!

What does it mean when both heater core hoses are cold?

Clogged Heater Core

If there is a clog in the heater core, the coolant can’t flow through it properly. This will cause the hoses to be cold, and your car’s interior won’t be warm. You will need to flush the system to get it working properly to fix this.

Can you flush a clogged heater core?

To clean the blockage, you need to flush water or air through the heater core. By doing so, the grime and dirt that’s causing the clog will come out through the inlet hose. Now, insert a water hose into the outlet hose. If you have access to an air compressor, you can use that to push out the coolant and grime.

Can you drive a vehicle with a bad heater core?

You can still drive on with the condition, however, you should not, for a long time. The heater core uses the engine’s coolant, and a faulty heater core affects the cooling effect which then raises the temperature. Not curing the issue and continue to drive the vehicle this way can lead to further engine damage.

How do you diagnose a heater problem?

Use these steps to troubleshoot your car heater.

  1. Check the Coolant. Low coolant can’t reach the heater core and generate warm air. …
  2. Assess the Heater Core. Make sure heater hoses are in good shape. …
  3. Inspect the Water Pump. …
  4. Listen to the Fan. …
  5. Look for Blown Fuses.

Is there a fuse for the blower motor?

Many vehicles have two fuses for the blower motor, one in the interior fuse block and the other under the hood. The blower motor is usually under the dashboard on the passenger side.

How do I know if my heater control valve is working?

Common signs include the heater not working, coolant leaking from under the engine, and no voltage across the heater control valve.

Usually a bad or failing heater control valve will produce a few symptoms that can alert the driver of a potential issue.

  1. Heater doesn’t work. …
  2. Leaking coolant. …
  3. Erratic heater behavior.

How do you know if your heater control valve is bad?

Symptoms of a bad heater control valve

  1. No heat comes out.
  2. Heat is always on and you can’t turn it down.
  3. Heater operates erratically, putting out more or less heat without any control changes.
  4. Coolant leaks.
  5. Low coolant level.
  6. Higher-than-normal temperature gauge readings (from loss of coolant)

How do you test a heater control valve?

How Do You Test a Heater Control Valve?

  1. Bring the engine up to operating temperature and switch the heater to the hottest setting.
  2. Check the temperature of the valve’s outlet hose (between the valve and the heater core)—it should feel nearly as hot as the valve’s inlet hose.