Freightliner heater not working

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Freightliner heater not working

Back to News. Posted on December One of the worst feelings when you drive a heavy-duty truck for a living is getting into that truck, starting it up, and cranking up the heat only to be disappointed by the temperature of the air or the amount of warm air getting into the cabin. Blaine Brothers semi truck repair shops in Minnesota and Wisconsin help you get back on the road. The heat in a truck is relatively simple. The engine produces heat, and it produces lots of it. Coolant is pumped in and around the engine to absorb a large portion of this heat. This coolant is eventually routed through hoses away from the engine and into the heater core. The heater core is the primary component responsible for creating heat in your cabin and keeping your defroster working. No matter where in the country you live, your heater core is an essential component in the operation of your truck. While the coolant is in the heater core, the excess heat that it had absorbed from the engine can be dispersed more easily, while also creating a heating source for the cabin climate control and defroster. The heated coolant in the heater core acts as a large heating element, and the blower moves large amounts of air across the heater core, sending that warm air through the vents and into the cabin. As the coolant is continuously pumped in and around the engine, it keeps the heater core extremely hot at all times. This means that when you turn on your heat and the blower motor starts moving air, you should feel warm air almost instantly.

Would you think that I need to have my truck engine turned on in order to power up my heater? After you figure out what the problem is,it only takes about 45 minutes, but it took me hours to get to that point.

Discussion in ' Freightliner Forum ' started by Dennis , Apr 30, Without your consent employers will not be able to contact with job offers, would you like to opt-in now? Each company we work with has specific experience requirements for their drivers. In order for you to receive the best possible offers, please make sure your answers above are accurate prior to submitting. Log in or Sign up.

At Fixya. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated. The air from the heater core will be as hot as the coolant temperature of the engine. Thermostats come in a couple of different opening temperatures so check around for one that opens around 85 degrees if you want hotter air in the cab Another point is to close the recirculating vent door to the cabin as the heater core is trying to heat fresh freezing air if it is open. You may be hearing the actuator moving but not the door. I would check if your vent to the outside is open.

Freightliner heater not working

Discussion in ' Freightliner Forum ' started by Dennis , Apr 30, Without your consent employers will not be able to contact with job offers, would you like to opt-in now? Each company we work with has specific experience requirements for their drivers. In order for you to receive the best possible offers, please make sure your answers above are accurate prior to submitting. Log in or Sign up. Find Trucking Jobs. Regional Truck Driving. Dedicated Trucking. Tanker Driver.

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Optimized Idle will start the engine if the batteries get down to Brandt , May 1, I think the problem might be the fuse or just resetting the bunk heater, although can't find the switch got older version. While the coolant is in the heater core, the excess heat that it had absorbed from the engine can be dispersed more easily, while also creating a heating source for the cabin climate control and defroster. The heaters use a restrictor to stop excess flow through the heater which if not in place will short the rear heaters of flow. This is often because when the radiator was refilled with coolant, it had some air gaps in it that were not purged properly. The fan is blowing, but cold air is coming out. Sounds to me like you do not have enough circulation. Forums New posts Search forums. Air Bubbles in the Coolant System Many people that try to refill their coolant find that they end up with air bubbles in their coolant system or hoses. Log in Register. Then you go in sleeper and turn the temperature all the way to hot and turn the sleeper fan on high and see if blow hot air out. There are so many reasons that the heat may stop working in your heavy-duty or semi truck, but some of the most common are listed below.

Keep reading as we walk you through some of the most prevalent truck heater problems. Is your truck heater not functioning?

Brad Barker Administrator. The other common way for heater cores to fail is to simply break or become too old and weak to stand up to the pressure of use. Good luck. The controller is facing backwards under the front heater motor. Low coolant levels also add potentially damaging stress to the operation of the heater core. If you turn on Interior Comfort Mode. If the engine is cold the heater has to heat the coolant first to get some heat going. Maybe the heater is not firing up. The front is toasty and the defrost works but the kids in the back are not comfortable as there is no heat blowing out just air. This generally starts with a small pinhole that corrodes into the heater core housing, subsequently allowing a fine mist of coolant to spray out when the heater core is being used. Bunk heater NOT heating. Brad A.