Where to Find the Blower Motor Resistor in a Peterbilt 379: A Step-by-Step Guide

The blower motor resistor for a Peterbilt 379 is located under the passenger side of the dash.

Peterbilt 379 Blower Motor Resistor Location

The Peterbilt 379 Blower Motor Resistor Location is easy to identify and access. Located under the hood of the vehicle, it sits next to a fan mounted on the firewall, between the blower and heater core. By removing a few screws, the resistor is easily accessible.

This part helps regulate the flow of current from the ignition switch to the heater components, ensuring proper heating levels and optimal performance. Replacing this resistor can help solve a range of issues with malfunctioning blowers and heater coils. With detailed instructions and minimal tools needed, anyone can perform this repair job quickly and effectively with little effort.

Peterbilt 379 Blower Motor Resistor Location

The blower motor resistor is an important component of the Peterbilt 379, as it controls the speed and intensity of the vehicles heating and cooling system. It is located in the HVAC (Heating, Ventilation, and Air Conditioning) module, which is located underneath the dashboard. Accessing this component can be tricky, however, with a few steps you should be able to locate it quickly.

Identification of Components

The first step in finding the blower motor resistor in a Peterbilt 379 is to identify all of the components that make up the HVAC module. This includes the air filter box, heater core, evaporator core, cabin air filter housing, and blend door actuator. Once these components have been identified, you can then locate where the blower motor resistor is located within this module.

Finding the Blower Motor Resistor

Once all of the components have been identified within the HVAC module on a Peterbilt 379, you can then begin to search for where exactly within this module that your blower motor resistor is located. The blower motor resistor is typically found mounted on a bracket or plate near the fan assembly within the vehicles engine bay. In some instances it may also be found near or behind an access panel on either side of the vehicles dashboard.

Checking Power Supply System

Before attempting to access or troubleshoot any issues concerning your Peterbilt 379s blower motor resistor it is important to check that there is sufficient power supply running through this system first. This can easily be done by checking for any faulty fuses or relays in both your vehicles main fuse box and HVAC fuse box. If either one of these components are found to be faulty they will need to be replaced before further testing can take place.

Testing Individual Components

Once you have confirmed that your Peterbilt 379 has sufficient power supply running through its HVAC system it may then be necessary to test each individual component within this system in order to determine which one may be causing an issue with your blower motor resistor. This includes checking for any worn out bearings or loose wiring connections on both your heater core and evaporator core as well as confirming that your blend door actuator is working properly by making sure that all corresponding doors are closing and opening as expected when activating their respective switches from within your vehicles dashboard.

Safety Considerations

When accessing a blower motor resistor in a Peterbilt 379 there are certain safety considerations that should always be taken into account before attempting any kind of maintenance work on such a component. Firstly it should always be remembered that working with electricity carries its own inherent risks so proper precautions must always be taken when working around such components such as wearing appropriate gloves and eyewear protection at all times during any work being done on these systems. Additionally any exposed wires should also be covered up with electrical tape whenever possible in order to prevent accidental contact with them while performing maintenance work on them as well as making sure that any tools used are not too large or powerful for their respective tasks at hand so they do not cause damage to any nearby components while being used.

Potential Solutions

If after performing all of these checks you still find yourself having issues with your Peterbilt 379s blower motor resistor there may still be hope left yet for fixing this problem without having to replace it entirely. One potential solution may involve verifying all electrical circuits associated with this part including checking whether or not they are receiving sufficient power supply from other parts of your vehicles electrical system such as its battery or alternator and if not replacing them if necessary until they are functioning correctly again can help resolve any potential issues here once more without requiring replacement parts for doing so. Additionally troubleshooting all connections associated with these circuits by inspecting them for breaks or other signs of damage can also help identify potential problems here which could otherwise go unseen if left unchecked thus aiding in resolving any potential issue here even further still without needing additional parts either way here too thus saving time and money alike for doing so too overall here too at last!

Specialized Equipment Necessary for Replacing a Blower Motor Resistor on an Peterbilt 379

Replacing a blower motor resistor on an Peterbilt 379 requires specialized equipment, such as an electric pressure wrench and a wire feed welder. Without these tools, it is impossible to replace the resistor. The electric pressure wrench is used to loosen the bolts and nuts that hold the resistor in place. The wire feed welder is used to connect the terminals of the new resistor to the wires from the vehicle’s wiring harness. It is important to use these specialized tools properly, as improper installation could lead to costly repairs or accidents.

Comparing Commonly Available Replacement Parts for Blower Motor Resistors on a Peterbilt 379

When replacing a blower motor resistor on an Peterbilt 379, it is important to compare the various brands available in order to determine which product best suits your needs. Considerations should include brand specifications, cost and quality considerations. Some manufacturers offer better quality than others, so it’s important to research and compare products before making your purchase. Additionally, consider any applicable warranties that may come with certain parts or brands.

Reputable Manufacturers of Replacement Parts for the Peterbilt 379

When purchasing replacement parts for your Peterbilt 379, it’s important to buy from reputable manufacturers that offer quality assurance certification and applicable warranties. This will ensure that you get a product that meets your needs and expectations without having any issues down the line. Additionally, you should always read customer reviews before making any purchase decisions in order to ensure you are getting what you need at a fair price.

FAQ & Answers

Q: Where is the blower motor resistor located on a Peterbilt 379?
A: The blower motor resistor of a Peterbilt 379 is typically located on the firewall of the truck, behind the glove box.

Q: How can I tell if my Peterbilt 379s blower motor resistor needs to be replaced?
A: If your Peterbilt 379s blower motor is not working or only works intermittently, then you may need to replace the blower motor resistor. Additionally, if you see any signs of corrosion or damage to the resistor, then it should be replaced.

Q: What tools will I need to replace my Peterbilt 379s blower motor resistor?
A: To replace your Peterbilt 379s blower motor resistor, you will need a Phillips head screwdriver and a pair of needle nose pliers.

Q: What steps do I need to take when replacing my Peterbilt 379s blower motor resistor?
A: To replace your Peterbilt 379s blower motor resistor, first make sure that the truck’s engine is off and that all electrical components are disconnected from the battery. Then, remove any screws or bolts that are holding the fan in place. Once you have done this, carefully remove the old resistor and replace it with a new one. Finally, reattach all electrical components and screws/bolts and test out your new blower motor before putting everything back together.

Q: Is there anything else I should do when replacing my Peterbilt 379s blower motor resistor?
A: It is recommended that you inspect all other electrical components in your vehicle while replacing your Peterbilt 379s blower motor resistor to ensure they are functioning properly and free from any signs of corrosion or damage. If any issues are found with these parts, they should be addressed before completing installation of the newblower motor resistor.

The Peterbilt 379 Blower Motor Resistor is located on the passenger side of the cab, beneath the dash, near the blower motor. It should be easily accessible and can be replaced with relative ease. Therefore, it should not take too much time to repair or replace the resistor if it needs to be done.