3 Common Electrical Problems in Semi-Trucks

Electrical issues often cause semi-truck failures. According to some research, nearly one-third of all truck failures are the result of electrical problems. Even though many electrical faults are caused by straightforward issues like blown fuses or weak connections, some may be more significant and lead to expensive repairs or even complete engine failure. The three most typical electrical problems that might impact semi-trucks are listed below. 

1. Problems with the ECU 

A malfunctioning Engine Control Unit (ECU) is one of the most typical electrical issues with semi-trucks. The ECU is in charge of controlling the timing and fuel injection of the engine, and it also keeps an eye on the engine's sensors and emission control mechanisms.

The engine won't operate correctly and can stall if the ECU isn't working properly. In rare circumstances, a malfunctioning ECU might harm other electrical system components. If you have any doubts about its functionality, it is crucial to get your truck's ECU tested as soon as you detect a problem.

2. Wiring issues 

Wires may get loose and break over time due to the truck's continuous vibration. Numerous risks, like as short circuits and fire, may result from this. The electrical "noise" that unsecured cables might produce can also cause interference with the truck's onboard computer systems. Engine, transmission, and other systems issues may result from problems with the onboard computers.

Circuit protectors, which are intended to prevent electrical issues, are included in a lot of semi-trucks. A malfunctioning circuit protector might let too much current pass through the electrical system. This might harm components and result in a breakdown. As a result, the electrical system risks being exposed to a power surge. Circuit breakers may also malfunction and fail to trip when they should. For this reason, it's crucial to have your circuit protectors checked by a qualified technician when you bring your vehicle in for routine maintenance. 

3. Problems with starting the semi-truck 

The engine must be started using the starter mechanism. Unfortunately, semi-truck starting issues are rather typical. Sometimes the issue is as simple as a loose connection. But the starting motor itself is usually the problem. Starter motors go through a lot of wear and tear and may finally stop functioning altogether. When this occurs, the starting motor must be changed to start the engine.

Thankfully, most semi-starters are widely accessible and quite simple to install. But if you don't know much about electrical systems, it's better to let a technician do this. 

Final words

If you are facing any of these issues in your semi-truck, you need to get the help of a truck repair specialist. Then you can address the issue instead of dealing with hassle on the road. 

Other Truck Repair Industry Articles

Peterbilt Truck Breakdown

4 Tips for Preventing Common Trucking Breakdowns of Your Peterbilt Truck

Do you own a Peterbilt truck? Then you need to be mindful about keeping it in perfect condition. To help you with that, we will be sharing 4 tips on how to prevent common Peterbilt truck breakdown issues.

Learn more
3 Common Indicators of Heavy-Duty Truck Axle Problems

3 Common Indicators of Heavy-Duty Truck Axle Problems

Because the axle is so critical in the operation of your heavy-duty truck, it’s important to be aware of signs of axle damage. In this article, we will be sharing 3 common indicators to identify heavy-duty truck axle problems.

Learn more
Choosing the Right Truck Alignment Shop - Top 3 Things to Consider

Choosing the Right Truck Alignment Shop - Top 3 Things to Consider

Your tires may wear down unevenly if they are misaligned, and you may find it difficult to stop safely in slippery road conditions. Here are some tips that you can follow to help you choose the best truck alignment shop for your needs. 

Learn more