Why is my Chevy Astro heater not working?

While there are a variety of reasons your Chevrolet Astro heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.

Where does the water go in an Astro van?

The heating system on an Astro van starts at the water pump, where the water is picked up and transferred through a hose to the heater core. The water runs through the heater core and returns to the Astro’s intake manifold on the engine side of the thermostat housing.

Where is the water heater located in an astro?

The water runs through the heater core and returns to the Astro’s intake manifold on the engine side of the thermostat housing. The heater core and the air conditioning evaporator share the same housing under the dash but are in separate compartments. The blower motor is located in the part of the housing located under the glove compartment.

What happens if the heater control valve fails?

When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold. Also, the valve could leak engine coolant, p…

Why does my Astro AC fan not work?

My 91 Chevy Astro doesn’t like to blow air on high. The AC/Heater fan works fine at lower settings but when in high it doesn’t work at all or will run for 30 seconds and then stop. I’ve replaced the switch in the dash, but that didn’t help.

What to do if your Ford Fusion heater is not working?

When the blower motor resistor fails, the air conditioner and heater may still work, but air may blow from the vents at only some of the fan speed settings. If the resistor isn…

Why is my AC heater fan not working?

This sounds more like a problem with high speed fan relay. On the low speeds, the fan relay routes the voltage thru the resistor block. When you switch to high fan speed, the relay switches over to supply full voltage from the battery to the fan motor.

When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold. Also, the valve could leak engine coolant, p…

When the blower motor resistor fails, the air conditioner and heater may still work, but air may blow from the vents at only some of the fan speed settings. If the resistor isn…

Why does my Dodge Caravan have no heat?

My problem is on a 1996 Dodge Caravan 3.3 liter. It has A/C but is a short body and has no rear heat or A/C. The trouble relates to the blower motor and its activation. My blower motor does come on. The Haynes manual says the blower is activated by a relay. I need to find the location of this front blower relay and the fuse that powers it.

What to do if your car heater is not working?

Solution: Set the heater to its maximum setting, remove the coolant tank cap and fill it to the proper level. Start the engine with cap still open and let the engine idle for a few minutes. If the coolant level should drop as the thermostat opens, top it up as necessary.

What to do if your Van Fan does not come on?

If the fan does not come on, check the fuses located in the van under the driver’s side dash or on the driver’s outside of the dash between the door and the dash. If they are good check the relay for the interior fan.

Where is the heater control valve on a Chevy Astro?

The heater control valve exists in a part of the system after the engine, but before the radiator so the coolant in this part of the system has been heated when it arrives to the valve. Once the valve is activated, the heated coolant can flow into the passenger compartment and fill the heater core.

Why does my car heater keep blowing cold air?

There are many reasons your car’s heater isn’t working. Maybe the fan is malfunctioning. Perhaps your temperature gauge is running below normal. There could even be a puddle of liquid under the front of the vehicle. A lack of heat can be a symptom of a much larger problem. You could soon be facing failing parts or even a blown engine.

What happens when the blower fails on a Chevy Equinox?

When the blower motor fails, the air conditioner and heater may still work, and heat or cool may be felt at the vents, but the air pressure will be dramatically decreased. This Read More When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold.

How often does my Chevy Silverado heater not work?

Enter your zip code: This current issue is a repeating one, which happens every 1.5 to 2 years. During the cold months, the heat will be on and working fine, then all by itself will go to extremely cold on driver’s side. Sometimes, the heat will be turned on for both sides, and the driver’s side will stay completely cold.

Is the Chevy Silverado heater on the driver side?

In the colder months, the heat will work perfectly on the passenger side, but NOT on driver’s side. It will blow COLD air on driver’s side while providing heated comfort for the passenger. This is a 2005 Chevy Silverado 1500 wt with a 4.3L V6. I love the truck EXCEPT for this split heating problem. I have paid $400 every time this breaks.

Are there any problems with the 2002 Astro van?

CarComplaints.com Notes: The 2002 Chevy Astro Van has a solid reputation with very low complaint rates. The only problem now is finding one with low miles. Read more » Not only is the 2002 Astro Van reliable, but since they were built on a truck powertrain, they can tow 5,500/5,000 lbs (RWD/AWD) — almost double what other minivans can.

What to do if your blower fan stops working?

Take glove box out on passenger side. Upper left corner is Blower Fan Knock on it. If it comes on it is going out will need to replace. Blower fan will not come on at all? Check Fuses & Blower Fan? Fuses replaced for blower fan,took blower fan out and tested it and it worked? Well it has to be you climate control panel nothing else to check!

When does a fan motor need to be replaced?

If it is getting power, then the fan motor is bad. If the fan motor only worked on one speed, the blower motor resister is bad and needs to be replaced. If the fan motor works but the location of the airflow can not be changed, the blend door motors or vacuum solenoids must be checked for operation.

Why is my blower motor on my Ranger not working?

I recently experienced a problem where the blower motor in my 1996 Ranger quit working. When working with your blower motor you have to first understand that the blower basically works in the opposite manner of most automotive electrical components. Normally you switch on a positive current to an electrical component to turn it on.

How to fix a Chevy Express heat fan blower?

– Resistor Replacement, Wire Harness Repair – YouTube Chevy Express Van- Ac/Heat Fan Blower issue Fixed! – Resistor Replacement, Wire Harness Repair If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations.

What causes a blower fan to not work?

When this happens, you may notice that you will not feel anything blowing out of the vents at all. This may also cause the blower motor to work intermittently. A blower fan is connected to the negative battery terminal (also called ground) on one end and to the positive battery terminal through a blower motor resistor on the other end.

How is a blower fan connected to a battery?

A blower fan is connected to the negative battery terminal (also called ground) on one end and to the positive battery terminal through a blower motor resistor on the other end. The blower resistor is connected in series to the blower fan motor.

When to replace the heater fan control switch?

If you have replaced the blower motor and blower motor resistor on your ’95-’98 GM truck or SUV, and your fan only works on high or doesn’t turn on at all, your heater fan control switch needs to be replaced. This video explains on how to do replace this part. Thanks for watching. Loading…

Why is my air conditioner compressor not working?

The compressor is like the heart of your air conditioner, and when it goes, there’s a good chance you’ll need a new unit. The good news is, many of the causes behind HVAC airflow problems are easy and relatively inexpensive to fix. Read on to learn about the most common causes as well as one easy way to improve AC air flow once and for all. 1.

What causes air to move through the HVAC system?

Sometimes, something as simple as a faulty thermostat, or even a low battery can be the cause of HVAC airflow problems. 6. Sluggish fan. Your HVAC system has blower fans that move the air through your ducts and throughout your space.

What causes a heater control valve to stop working?

The mechanical unit can leak coolant or the vacuum diaphragm can rupture causing a vacuum leak which will stop control valve operation. The cooling system is pressurized so a coolant leak at the control valve can cause the coolant level to become very low and cause the engine to overheat. Loading…

Is the Chevy Astro a minivan or truck?

Like the now-extinct Ford Aerostar, the Astro and its GMC Safari cousin are truck-based vehicles, better suited to heavy-duty work than are front-drive minivans. Trucklike behavior could be a turnoff unless you need Astro’s brand of brawniness for towing or other demanding applications.

How does the heater control valve work in a car?

The heater control valve is part of the vehicle’s cooling system as coolant does flow through this valve. Engine operation generates a lot of heat and this heat gets transferred from the engine assembly to the liquid coolant in the cooling system to be cooled by air flowing across the radiator.

Where is the heater located on a Chevy Blazer?

The cabin heater in your vehicle produces heat from a heater core. The heater core is a small radiator, located under the dashboard of the vehicle and consists of conductive aluminium or brass tubing with cooling fins to increase surface area. Hot coolant passing through the heater core gives off heat before returning to the engine cooling circuit.

Do you need to replace the radiator in a Chevy Astro van?

The heater core in the Chevy Astro van acts like a small radiator that the engine coolant passes through. If the van’s heater has trouble working, you may need to replace the core. The good news is that you don’t need to completely remove the instrument panel to reach the core like you do on most vehicles.

How do you remove a heater core from a van?

Plug the core tubes with rubber to prevent contaminants from entering. Reach under the dashboard in the van’s passenger compartment and remove the screws for the heater core cover to remove it–the cover should have a half-cylinder shape. Remove the two mounting screws at the rear of the heater core and lift the core out of its housing.

How do you remove coolant from a 1994 Van?

Remove the coolant reservoir by disconnecting the overflow hose from the radiator filler neck, removing the fasteners for this reservoir and the windshield washer fluid reservoir, lifting both up and separating the coolant reservoir from the other one. This is needed if the van is a 1994 model or older.

Why is my Chevy Astro heater not working?