At Harold's Used Auto Parts Inc in Philadelphia, we know that keeping up with required maintenance schedules is the difference between a truck that lasts a few years and a truck that stays strong for decades.

At Harold's Used Auto Parts Inc in Philadelphia, cars are our passion, so naturally, we like to keep up with new technology on the market. At the moment, surprisingly the current trend is moving towards a goal you may not expect; self-driving vehicles. You’ve probably heard about self-driving cars a little bit here and there on the news, but it likely still seems somewhere in the realm of science fiction to you. However, the reality is that self-driving cars are on the way and maybe here sooner than you think. Already, almost all major automobile manufacturers are dumping billions of dollars into research and development for self-driving cars, and even companies like Uber are jumping on board. 

Judging by the number of near-rear-endings we witness on our morning commutes, the typical attitude toward brake maintenance appears to be, “Brakes: Don’t let them stop you!” This puzzles us because monitoring your braking system’s health is one of the most straightforward aspects of car ownership. You do have to know what to look for, though, or rather, what to listen and feel for. So let us, uh, break it down for you. Here are the top three signs that your brakes need fixing.

Transmission slippage can be caused by a variety of factors that are sometimes difficult to pin down. From Harold's Used Auto Parts Inc in Philadelphia, PA, here’s a rundown of the more common issues that may cause a transmission to slip. Our highly trained technicians are ready to get you going with a top transmission.

At Harold's Used Auto Parts Inc in Philadelphia, we’re not only here to fix your car when something goes wrong...we’re here to help you understand your car, truck, or SUV a little better, too. Here are some tips concerning your thermostat - how it works, what to watch out for, and what to do about it when one fails.

Fleet operators know that a day’s work can burn through a lot of fuel. When it comes to multiple vehicles, even a slight change in the way vehicles are used can make a huge difference towards saving fuel, and money as a result. Whether you manage diesel trucks, fleet cars, or both, a little bit of effort can sometimes go a long way.Harold's Used Auto Parts Inc in Philadelphia, PA has a few tips you can use to keep fuel consumption low, that you may be interested in implementing throughout your fleet.

Have you always wondered what a spark plug does? Our team here at Harold's Used Auto Parts Inc is here to help you out. It's simple in theory but does quite a lot of work for such a small piece of equipment. Your spark plug forces electricity to arc across a gap like a bolt of lightning at high voltage and fits into your engine's cylinder head, where it “sparks” to ignite the fuel and creates combustion within your engine. Without it, you wouldn't be able to drive your car or truck. 

Many cars, particularly models produced between the 1970s and the 1990s, utilize cable clutch designs instead of hydraulics to operate the clutch. Here’s a brief explanation of clutch cable systems, from Harold's Used Auto Parts Inc in Philadelphia.

At Harold's Used Auto Parts Inc in Philadelphia, routine maintenance and repair isn’t the only thing we do. For custom parts installation, you can also count on us. Common modification enthusiasts do is swapping to a short-throw shifter; but what actually is a short-throw shifter, and what does it do?

If you own or maintain a fleet or commercial truck, you are likely already familiar with the term ASE certified technician. But what does ASE mean, and why is it important? Harold's Used Auto Parts Inc in Philadelphia, PA has the answer.

At Harold's Used Auto Parts Inc in Philadelphia, we know that few problems are simultaneously as simple and confusing as a bad ground connection on your car, truck, or SUV. Here’s a look at some symptoms of a bad ground, and what you can do to correct it.

At Harold's Used Auto Parts Inc in Philadelphia, PA, we believe it’s important for you to know how different systems in your car, truck, or SUV operate. Whether you want to know what to watch out for, or you’re just curious about how things work, we’re here to supply the answers.

Unless you use your vehicle to tow every day for work, odds are you haven’t paid much attention to your truck, SUV, or crossover’s towing capacity. Maybe you’re looking to buy a boat for some summer fun or just need to rent a trailer to get your belongings from one dwelling to the next. Whatever the reason for pulling something behind your vehicle, it’s important to get a firm grasp on what exactly your towing capacity means. Understanding how each of the components in your vehicle contributes to your overall tow rating can keep you from putting undue stress on your rig and keep you and your family safe.

It’s likely you’ve been exposed to conflicting opinions about having your transmission fluid replaced. You may have heard that cars over a certain mileage should not have the transmission fluid flushed and replaced, because it could damage the transmission, or you may have had someone tell you the first thing you should do at any sign of trouble is have your transmission flushed. At Harold's Used Auto Parts Inc in Philadelphia, our expert mechanics have the answers you’re looking for.

If you drive a lightweight car, truck, or SUV, the torque converter you have installed is probably just fine. For those of you with more heavy-duty applications, like high horsepower setups or towing rigs, the stock converter may not be enough. At Harold's Used Auto Parts Inc in Philadelphia, PA, we can help with that.