(626) 810-2281  

If you own or maintain a fleet of vehicles, you understand what a huge investment multiple vehicles can be, especially when dealing with semis and other commercial trucks. At Craig Johnson Automotive in Rowland Heights, CA, we’re here to help you protect that investment.

Mechanic taking apart of an engine out from under the hood

An engine can last anywhere from 50 to 500,000 miles depending mostly on how well you maintain it. While some engines are certainly more reliable than others, all of them depend on maintenance to fulfill their greatest potential. Craig Johnson Automotive in Rowland Heights, CA has provided for you some of the determining factors of engine lifespan, to help you make sure your engine lasts as long as it possibly can.

fleet of vehicles

The heads on your commercial or fleet diesel are one of the most integral parts of your engine. The heads are comprised of the valvetrain, exhaust ports, intake ports, and injector ports. In essence, a head’s purpose is to regulate and time the intake of fresh air, the release of exhaust, the compression of fuel and air that provides combustion, and the entry point for fuel into the cylinder. The head is where all the complex aspects of engine operation occur...without it, you just have a chunk of metal with pistons in it, and no way to make them move. Here’s what you need to know about your heads, from Craig Johnson Automotive in Rowland Heights, CA.

checking your a/c coolant

Your vehicle's cooling system is one of the most important systems in your vehicle. Inside your engine, spark plugs ignite the fuel within the cylinders to produce small explosions that propel your vehicle down the road. With small explosions comes scorching temperatures that can destroy your engine if not controlled. There are two types of cooling systems - liquid-cooled and air-cooled. 

mechanic working on ball joints on a vehicle

If you own or operate a fleet of vehicles or a commercial truck, chances are you’ve encountered a bad ball joint or two. How do you catch one before it breaks, and why is it important? Craig Johnson Automotive in Rowland Heights, CA has the answers.

flywheel

What is your flywheel, and when do you need to replace it? Craig Johnson Automotive in Rowland Heights, CA has the answers you’re looking for.

Check engine light on the dash

There’s a huge percentage of vehicle on the road, right now, with the check engine light illuminated. Many of them have had it on for years, even. Frequently, a check engine light will illuminate, but pose no immediate problems, so people just get used to it and learn to live with it being on. However, Craig Johnson Automotive in Rowland Heights, CA would like you to know that it’s worth having it looked into. Typically, the problem can be diagnosed by simply plugging your car into our computer; the vehicle gives us a code, and we know what the problem is immediately.

shocks  image

Tires may be the only part of a vehicle that physically meets the road, but your shock absorbers are next in line. Working with the suspension springs, they absorb shocks from bumps and cracks in the road, while simultaneously controlling bounce and body roll.

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Craig Johnson Automotive

19140 San Jose Ave
Rowland Heights, CA 91748
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Weekends: By Appointment

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