Diesel Repair

  • Is It Okay to Idle A Diesel?

    You’ve likely heard that diesel engines are ok to idle indefinitely, and that it’s even good for them. Where does this logic come from, and is it true? Harold's Used Auto Parts Inc in Philadelphia, PA has the answers.

  • Is It Time to Buy New, or Fix What You Have?

    Whether you drive a Chevrolet, Ford, or Dodge diesel pickup, there will come a day when it’s time to ask the question - has the time come to get a new truck? Harold's Used Auto Parts Inc in Philadelphia, PA is here to help you decide.

  • Is It Time To Replace Your Thermostat On Your Diesel Truck?

    Thermostat for a diesel truck

    You trust your diesel to get you to point A to point B every time you get into your truck. However in return, if your truck starts to act differently take the time to pause and listen to what your truck is trying to tell you. Issues can be as small as a thermostat going out, which if fixed now could reduce a more expensive repair down the road! The thermostat in your truck is a small, simple, and critical component. At Harold's Used Auto Parts Inc in Philadelphia, thermostat replacements are just one of many repairs we tackle.

  • Is Your Airbag Service Light On? Why You Shouldn't Ignore it!

    Every time you get into your diesel truck you probably forget all the safety features your vehicle has for you in case of an accident. Airbags are one of the greatest features of modern diesel trucks, though they aren’t often considered until you need them. From Harold's Used Auto Parts Inc in Philadelphia, PA, here’s a nod to one of the better vehicle advancements of our time and why it's important not to ignore warning signs.

  • Is Your Diesel's Injection Pump Having Issues?

    injection pump

    Whether you drive a Chevy, Ford, or Ram diesel pickup, your engine is likely equipped with an injection pump. While injection pumps have been gradually phased out on modern engines, they are still an integral part of most diesel engine operations. At Harold's Used Auto Parts Inc in Philadelphia, PA, we specialize in maintenance and repair on Cummins, Duramax, and Powerstroke engines, including injection pumps.

  • Is Your Truck Ready For An Engine Replacement?

    Your truck was built for work. Whether you drive a Ram, Chevy, or Ford diesel pickup, your truck was designed to endure, day in and day out. Nonetheless, eventually, there will come a time where your engine needs major repair - and you’ll have to make a decision on what to do next. At Harold's Used Auto Parts Inc in Philadelphia, PA, we’re here to help.

  • Know When To Buy a New Vehicle

    salesman talking to customer about a new vehicle

    Whether you drive a Chevrolet, Ford, or Dodge diesel pickup, there will come a day when you have to ask the question - has the time come to get a new truck? Knowing when to throw in the towel or decide to keep the vehicle you have can be a difficult task. Harold's Used Auto Parts Inc in Philadelphia, PA is here to help you decide.

  • Let Us Build S Fleet Service Program That Works For You!

    While most fleet vehicles are chosen for their reliability, low maintenance, and durability, sometimes maintaining several of them at a time can become overwhelming. Just keeping up with the maintenance schedule alone is a task and then to ensure you keep your scheduled routes for those fleet vehicles is another task in itself. Let Harold's Used Auto Parts Inc in Philadelphia put your mind at ease, with our fleet maintenance programs for any and all fleet vehicles. We will take the stress from your business fleet program and get your fleet trucks and fleet cars running at optimum performance with a routine that works for your business that often REDUCES costs!

  • Light vs. Heavy Duty Trucks - What's the Difference?

    row of trucks lined up

    Harold's Used Auto Parts Inc in Philadelphia, PA services all kinds of trucks, regardless of weight class. From small trucks to semi’s, we’ve got you covered. For the sake of curiosity, however, what classifies a truck as light or heavy-duty?

  • Looking For Custom Suspension?

    At Harold's Used Auto Parts Inc in Philadelphia, PA, we know that your diesel pickup is more than just transportation; you want a truck that can perform, both at work, off-road, and on the street. A major aspect of your truck’s abilities lies in the suspension components you choose to install. Our team of expert technicians has the knowledge, equipment, and ability necessary to take your truck to the next level and provide you with a suspension setup tailored to your specific needs.

  • Looking For Custom Suspension?

    suspension truck

    At Harold's Used Auto Parts Inc in Philadelphia, PA, we know that your diesel pickup is more than just transportation; you want a truck that can perform, both at work, off-road, and on the street. A major aspect of your truck’s abilities lies in the suspension components you choose to install. Our team of expert technicians has the knowledge, equipment, and ability necessary to take your truck to the next level and provide you with a suspension setup tailored to your specific needs.

  • Maintaining a Diesel Fuel System

    Large diesel truck

    Keeping your fuel system maintained will prevent premature parts failure and poor running conditions. Here are some important aspects of diesel fuel system maintenance, to keep your fleet running smoothly. While your system and components should typically be serviced by a professional technician, there are some things you can be conscious of that will go a long way toward keeping your engine in good shape.

  • Maintaining a Diesel Fuel System

    Dirty Hands Working on a diesel truck engine

    Keeping your fuel system maintained will prevent premature parts failure and poor running conditions. Here are some important aspects of diesel fuel system maintenance, to keep your fleet running smoothly. While your system and components should typically be serviced by a professional technician, there are some things you can be conscious of that will go a long way toward keeping your engine in good shape.

  • Maintaining Fluid Levels in Your Truck

    oil being poured into a funnel

    Correct fluid levels are essential to keeping your Ram, Ford, or Chevrolet diesel pickup on the road. Luckily, checking your coolant, oil, brake, and transmission fluid are easy to do, and will save you from a variety of issues down the road. Here’s what you should know about keeping the fluid levels in your truck maintained, from Harold's Used Auto Parts Inc in Philadelphia, PA.

  • Maintaining Your Diesel Fleet

    fleet of semi trucks

    While diesel trucks are some of the best vehicles on the road today, sometimes maintaining a fleet of them can become overwhelming. Let Harold's Used Auto Parts Inc in Philadelphia put your mind at ease, with our fleet maintenance programs for diesel fleet vehicles.

  • Maintaining Your Diesel Injectors

    injectors

    Your injectors are the mechanism that delivers fuel into the cylinders of your diesel engine. As such, they’re clearly important. At Harold's Used Auto Parts Inc in Philadelphia, PA, we will diagnose, maintain, and repair any injector issues you may be experiencing with your commercial or fleet trucks, in a timely and professional manner.

  • Maintenance and Repair for Your Diesel

    diesel truck pulling a trailer

    You know our diesel technicians here at Harold's Used Auto Parts Inc in Philadelphia, PA are here to assist you with all your Chevy, Ford, or Dodge diesel pickup service needs. Sometimes, however, your trailer needs some attention too. Luckily, we’ll take care of that.

  • Maintenance for the Head Gaskets on Your Diesel

    diesel

    It’s important to keep you Duramax, Cummins, or Power stroke diesel in shape and running strong. Let the technicians at Harold's Used Auto Parts Inc in Philadelphia, PA keep your Chevy, Ford, or Ram pickup in great shape and ready for anything.

  • Maintenance for Your Diesel Fuel System

    mechanic with wrenches

    Fuel Systems are particularly important on diesel trucks, whether you drive a Ford, Chevrolet, or Dodge pickup. At Harold's Used Auto Parts Inc in Philadelphia, fuel system maintenance and repair is a service we prioritize, since we know how essential a reliable fuel system is.

  • Maintenance for Your Turbocharger

    tools image in a tool box

    The turbo on your diesel pickup is a precision-engineered component. As a result, proper maintenance is essential to keeping it going strong. At tens or even hundreds of thousands of RPM, keeping everything in good shape is absolutely necessary. Fortunately, turbos don’t really require any special maintenance - they just make the maintenance you do all the more important.

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5347 Whitby Ave
        Philadelphia, PA

(215) 472-1552
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MON-FRI | 8:30 AM - 5:30 PM
SAT | 8:30 AM - 2:00 PM
SUN | CLOSED
Closed every third Saturday of the month