If our certified auto technicians find a problem, we will let you know about it so you can have it fixed before it becomes a major problem. Also the dash panel gets hot as well. Before going into greater detail on why the heater may not be working and how you can maintain the system, let’s talk about the heater in your car. To that end, if your owner's manual is incomplete, buy a proper repair manual. 7 Possible Causes, Troubleshooting a No Spark Problem in Honda Accord. But a climate control system with no fan to push the air around is anything but controlled What’s wrong? This is often the case. Its job is to cool the warm refrigerant, and that makes the air cold when it reaches the evaporator. Let’s see what could be the probable reasons for car AC not blowing cold air when idle. The Haynes manual says the blower is activated by a relay. When car ac blowing hot air, the possibility of having a damaged wiring system is high. If you’re scouring the web for answers to “why is my car AC blowing hot air?” – then you’ve come to the right place. you're left with a miserably underpowered heat or AC system. You should also have the coolant flushed and replaced on a regular schedule. If it’s hot in a situation of car air conditioner blowing hot air , then it’s an engine problem. I need to find the location of this front blower relay and the fuse that powers it. Periodically check the level and condition of the coolant. https://thecarsguide.com/ac-blows-warm-air-in-car-causes-and-fixes If you do not feel any air or if you only feel air coming through the vents on certain settings, the problem may lie with the AC’s blower motor or the blower motor resistor. As did the author of this letter, you want your fan back. Haynes also states this blower relay is powered via a fuse in the junction box from under the dash, #12, 10 amp. Blog – Expert Automotive Info from Geller’s Automotive in Byram, NJ. There are many components and other systems that can cause warm air to come from the vents. But a climate control system with no fan to push the air around is anything but controlled. I just have to find the blower relay and its fuse. My problem is on a 1996 Dodge Caravan 3.3 liter. Why is My Car AC Blowing Hot Air? There are any number of reasons cold air or no air is coming through the vents. Car not blowing hot air? The radiator, thermostat, belts, water pump and hoses are responsible for circulating water to the engine to keep it from overheating. Check the Fuses, Relays, and Electrical Connections, Troubleshooting Common Condenser Fan Problems, Dodge Grand Caravan Flashing LED Display After Battery Disconnect, What to Do When Your Car Won't Start or Turn Over, Troubleshooting and Fixing Turn Signal Issues, 9 Reasons Your High Beam Headlights Are Not Working, Why Isn’t My Car AC Blowing Cold? Step 3: Check the strength of airflow. As it passes through the engine, the water absorbs the heat and is then circulated through a heater core where a fan blows the warm air into the interior of your car, truck or van. That said, if you're able to obtain a high-quality manual, it will pay for itself several times over in guidance. As we know, AC connection of a car is done with the wire that is not connected straight. Some cars have a shut off feature that will disengage the a/c compressor if your engine is under duress. One of the most common problems with an automotive climate control system is a lack of blower pressure or no blower at all. Although an automotive AC system has few moving parts, diagnosing why your car is blowing warm air can be tricky. Check out what he's been through, and why he should have asked an expert from the start. Sometimes blower motors and/or their resistors will fail and stop pushing both hot and cold air through the vents. It then feeds that cool air into the engine. The easiest way to maintain the entire cooling and heating system is to bring your vehicle to our auto repair shop in Byram, New Jersey. Important Tip: If your car heater stops working, schedule an appointment to have us check it out. 2021 Geller's Automotive. All rights reserved. From there, the water circulates back to the starting point so it can flow through the system again. No matter it’s your home ac or the car ac, there is a device named condenser in each of them. Dodge owners manual shows the 40 amp blower fuse, #25, but does not mention any blower relay in the PDC. Your AC Refrigerant is Leaking. It contains several joints for better rigidity and performance. The most common causes of broken air conditioning are leaks or compressor issues. There could be several reasons behind this problem. As you get in your car and turn on your AC, you probably expect it to be blowing hot air for the first minute or two until the system cycles through enough to cool it. Did you know it’s part of the cooling system? It will still work with no fan, and you'll usually still be able to control the temperature of the air that is blowing or trickling, out. If one or more of these issues is present, your vehicle may blow out cool air rather than heat: Not enough coolant in the engine Problems with the heater core Clogged or broken heating controls Dysfunctional thermostats Water leaks Some cars have a shut off feature that will disengage your car air conditioner compressor if your engine is under duress. Don’t forget to inspect the belts and hoses and have them replaced when they show signs of excessive wear. Any number of culprits could be causing your car A/C to blow cold then warm air, including: A Leak in the A/C System A small refrigerant leak is the most common reason a … Can you help? If your air conditioning is blowing warm or even hot air, there are a few potential causes. When any wire is broken that connects to the AC system, it creates the issue. A heater that’s not working could mean there is a problem somewhere else in the cooling system. This condenser has cooled and fans to push the air through. It has A/C but is a short body and has no rear heat or A/C. The best ​repair manual is always a factory manual, but these can either be hard to find or many times more expensive than a "consumer friendly" repair manual. Bring the car to a reputable auto shop that specializes in car air conditioning system. Here are a few of the more common reasons that’s causing the car heater to not work properly: It’s simple. This heater core then passes the hot air it generates into the vehicle with a blower fan. I work in the telephone business and am very familiar with DC wiring. When it is not, which of course occurs on the most brutally hot day of the year, the A/C suddenly becomes a cruel joke, blowing warm, stale air into your vehicle. If you are able to locate the wiring and find any malfunctioning there, use the electrical tape to mend the wiring. The problem of a car air conditioner blowing hot air on one side is mostly seen in cars which have a dual zone climate control system. Having your car’s air conditioning go out suddenly can ruin your day fast. Each time a spark ignites the fuel in the engine, there’s a tiny explosion that generates a lot of heat. Click here to schedule an appointment for car heater repair at Geller’s Automotive. Warm Air is Coming Out Instead of Cold. The radiator, thermostat, belts, water pump and hoses are responsible for circulating water to the engine to keep it from overheating. The cover, but none indicate they are for the front blower relay levels of refrigerant in a of! Air through i just have to find the blower is activated by a relay the 40 amp blower,... Not blowing cold air through electrical components such as fuses and relays through a simple four-phase cycle make your air. 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