Same Great Service at All Locations!

Mon - Fri: 7:00 AM - 6:00 PM
Sat: 8:00 AM - 5:00 PM

La Mesa Location

(619) 403-9426

7447 University Ave, La Mesa, CA 91942

Mon - Fri: 7:00 AM - 6:00 PM

Sat & Sun: Closed

Schedule an Appointment

El Cajon Location

(619) 404-5645

10813 Airport Dr., El Cajon, CA 92020

Mon - Fri: 7:00 AM - 6:00 PM

Sat & Sun: Closed

Schedule an Appointment

Articles:

When "Shady" is a Good Thing

Just like your skin can burn from too much sun, so can the paint on your vehicle.  It can turn dull, oxidize and fade the more ultraviolet rays beat down on it. One solution is to park in a shady spot, or you can buy a cover for your vehicle and put it on when you know it's going to be sitting in the sun for awhile. Yes, it takes a couple of minutes to put on, but in the end, keeping the gloss on your paint will help it retain its beauty… and its value. And it's not just the sun that can damage your vehicle's paint.  Grit, bird droppings, sap, dust and dead bugs can all ruin the paint.  So, keep your vehicle clean.  Wash it with a soap made especially for vehicles. Dry it with special towels that won't scratch your paint.  Remember:  DON'T WASH YOUR VEHICLE IN THE SUN. Once your vehicle is washed, protect the paint even further with a coat of wax.  DON'T WAX YOUR VEHICLE IN THE SUN, EITHER. Don't forget the vehicle's interior.  Plastic com ... read more

John's Automotive Care Automotive Tips: Alternator

Your alternator makes electricity to start and run your engine and all of the vital electrical systems in your vehicle. That’s everything from the on-board computers to the turn signals. And of course there is the entertainment system, seat heaters, power windows and everything you plug into the power outlets. After your alternator makes enough electricity to do all that, it recharges your battery with what’s left over.When San Diego drivers constantly have a low or dead battery, the alternator is usually a prime suspect. However, the alternator is just one vital component of the starting/charging system, and a problem with any of the other components could be the actual cause.In addition to the alternator, the charging/starting system includes the battery, starter, serpentine belt system and all of the electrical cables that connect them. Your John's Automotive Care service advisor has a systematic process of testing components and connections to get to the source of ... read more

Categories:

Alternator

The Puzzling Puddle (Leaks Under Vehicle)

Ever notice a little spot of liquid under your vehicle after you've parked in your driveway or garage? It may have been something as simple as water left from air conditioning condensation.  But then again, it could be a sign that there's trouble brewing in one of your vehicle's systems. You can help your service facility diagnose the problem by getting a little sample of the drip.  At the same time, you may save yourself a tougher clean up task by preventing the leaky fluid from really messing up the driveway or garage floor.  The first thing is to put something under the vehicle. A flattened out cardboard box will do fine.  You may also want to slip a little disposable aluminum tray or pan under it to catch a bit of the fluid.  Chroma and consistency can help a technician quickly figure out what kind of fluid you're dealing with.  You can take your sample with you when you go to your service facility. Also note how much of the substance is there over wha ... read more

Things Aren't Always What They Seem

If you drive, you know at some point, something's going to go wrong with your vehicle.  And sometimes, it's pretty easy to figure out what's wrong, like a flat tire.  But sometimes your vehicle's symptoms can be really puzzling. One driver in CA was heading to work on a hot July day and noticed when he pressed the accelerator, sometimes it wouldn't do anything. He also noticed his cruise control wouldn't work and his traction control light was constantly on, very unusual. He was trying to figure it out, but none of it made any sense.  His cruise control had always worked perfectly, his traction light never had gone on before and there was never any issue pressing on the accelerator. It was time to take his car in for a professional diagnosis, and boy, was he surprised that it was a freak accident he'd had the previous WINTER that was the root of his problems.  You see, in January, his car had slipped on ice when he was in reverse and had gently tapped a tree.  ... read more

Wasteful Thinking

With the weather getting colder, you might be tempted to start your vehicle up, let it idle for 15 or 20 minutes and then get in the nice, cozy cabin.  Some vehicles offer remote starting that let you do that from the comfort of your home or apartment.  But is letting your vehicle idle like that good for it? Manufacturers say it doesn't harm the vehicle.  They say it's because modern vehicles are made differently from those in the past.  Just about all newer vehicles employ fuel injection which uses computers to adjust the amount of gasoline that goes into the cylinders.  The engine gets only the fuel it needs, taking conditions into account. Older vehicles, on the other hand, used to use carburetors.  When you started a cold engine, the carburetor wasn't able to adjust the gasoline amount depending on conditions.  Some of the gasoline would mix with oil and the pistons wouldn't get the same lubrication as they would with undiluted oil. So yes, you ca ... read more

Categories:

Fuel Economy

Wishy-Washy in San Diego

Perhaps you've found yourself driving when something all of a sudden splashes on your windshield, obstructing your view. You know that sinking feeling when you try to turn on the windshield washers and no fluid comes out. Now you're blinded even more. What can you do? The best thing is to make sure your windshield washer fluid is always topped off and ready for these situations. You probably figure you'll grab a bottle of that blue stuff you see in the store. But is that really the right choice? One thing you know isn't the right choice is plain water. It can freeze when temperatures drop. Plus, when it's close to the freezing mark outside, spraying water on your windshield can freeze, turning it literally into frosted glass and blinding you suddenly. Water freezing in your vehicle's washer lines can also damage them. There are different types of windshield washer fluid made for different climates. Many have alcohol to prevent them from freezing; their label will usually tell you at wh ... read more

Upsizing Wheels and Tires With John's Automotive Care

Many San Diego drivers want to accessorize their vehicle - you know, make it theirs. One of the easiest ways to get a custom look is to get some new wheels. There are thousands of wheel designs at San Diego area tire shops to get you the look you want. And for many San Diego drivers, that look includes bigger wheels. It used to be that cars came from the factory with 15 or 16 inch wheels. Now 16, 17 and even 18 inchers are standard. And the factories are offering optional wheel packages up to 20 inches or more. So let's talk about what to consider when you want to upsize your wheels. It's not exactly a DIY project, so you need to know a thing or two before you get started. The most important term to know is rolling diameter. The rolling diameter is simply the overall height of your tire. Unless you want to modify your vehicle suspension, you'll want to keep your rolling diameter the same when you upsize your wheels.Let's think about those three golden doughnuts in front of you. T ... read more

Categories:

Tires and Wheels

Change Your Engine Air Filter at John's Automotive Care

Many San Diego car owners have probably wondered: "What's the harm in putting off replacing an engine air filter? The answer is that not replacing it could cause your Mass Air Flow (MAF) sensor to fail. This expensive sensor is situated between your engine air filter and your engine. Dirty air filters are a leading cause of mass air flow sensor failure – and these babies can cost several hundred dollars to replace in San Diego.Change your vehicle air filter at John's Automotive Care when it's dirty. Your vehicle engine will thank you.Give us a call. John's Automotive Care6267 Riverdale StSan Diego, CA 92120619-280-9315http://www.johnsautomotivecare.com    

Categories:

Maintenance

PCV Valve: What Is It?

Most San Diego drivers know something about preventive maintenance on a vehicle. We know we should routinely replace the oil and wiper blades and other fluids. But have you heard of a PCV valve ? This little car part needs to be replaced regularly or it can cause some serious problems in your vehicle engine.PCV stands for Positive Crankcase Ventilation. The crankcase holds your motor oil and is located at the bottom of your engine.When fuel is burned in your engine, it produces waste gases that are mostly vented out through your exhaust system. But some of these gases push their way past the pistons and into the crankcase. There, these gases can mix with motor oil to produce oil sludge, which can damage vehicle engine parts through corrosion and by clogging engine passages. San Diego vehicle owners should be advised that if the engine is running at high speeds, these gases can also cause pressure inside the crankcase to build up. This pressure, in turn ... read more

Categories:

Exhaust

For 4x4s (Maintenance of 4x4 Vehicles)

Some people love 4x4 vehicles, the true 4-wheel drive works of engineering like Jeeps and 4x4 pickups that allow you to seemingly go anywhere on the planet. You can climb up a 40-degree rock trail with some planning and skill (always careful to protect the environment, of course), or you can get through the deepest snow. But with that added capability comes additional complexity, drive-train components and other systems that less capable vehicles don't have.  And that is why when it comes to 4x4s, you have to maintain them a little differently from those vehicles that spend their lives on pavement.  Here are some of the key things to keep an eye on: Transfer case—This transfers power from the engine to the wheels.  A transfer case has fluid in it that needs to be changed at intervals recommended by the manufacturer.  Your service advisor will let you know how often that is and will keep track of your service dates.  You will need to make sure the transfe ... read more

Categories:

Drive Train
John's Automotive Care is committed to ensuring effective communication and digital accessibility to all users. We are continually improving the user experience for everyone, and apply the relevant accessibility standards to achieve these goals. We welcome your feedback. Please call John's Automotive Care (619) 280-9315 if you have any issues in accessing any area of our website.