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Archive for February 2021

PCV Valve Replacement

Posted February 28, 2021 8:07 AM



Hello Memphis, let's talk about your often-unnoticed but extremely important PCV valve. The energy from exploding fuel is what powers your engine. But some of the vapors from the explosions escape into the lower part of the engine, called the crankcase. The crankcase is where your engine oil hangs out. These gases are about 70% unburned fuel. If the gases were allowed to stay in the crankcase, they would quickly contaminate the oil and turn it to sludge. Memphis folks know that sludge is one of the biggest enemies of your engine, clogging it up and eventually leading to expensive failures. Also, the pressure buildup would cause seals and gaskets to blow out. Therefore, these gases need to be vented out.

Pre-1963, gasoline engines had a hose that let the  fumes vent out into the air. In 1963, the federal government required gas engines to have a special one-way valve installed to help reduce dangerous emissions. (Can you imagine how polluted our TN air would be if every car had been releasing those poisonous fumes for the last 50 years?) Diesel engines are not required to have these valves.

The positive crankcase ventilation (PCV) valve routes crankcase gases through a hose and back into the air intake system where they are re-burned in the engine. Fresh, clean air is brought into the crankcase through a breather tube. It's really a pretty simple system, but it does the job. The re-circulating air removes moisture and combustion waste from the crankcase, preventing sludge. This extends not only the life of your oil but the engine as well. The PCV relieves pressure in the crankcase, preventing  oil leaks.


Eventually, the PCV valve can get gummed up. Then it can't move enough air through the engine to keep it working properly for Memphis vehicles. If the PCV valve is sticking enough, you could have oil leaks, excess oil consumption and a fouled intake system. If you experience hesitation,  surging or an oil leak, it may be a sign of PCV valve problems. Your vehicle's owner's manual may give a recommendation for when the PCV valve should be replaced - usually between 20,000 mi/32,000 km and 50,000 mi/80,000 km. Unfortunately, some don't list a recommendation in the manual, so it can be easy to overlook.


Many PCV system problems can be diagnosed by our technicians at Madison Automotive . Fortunately, PCV valve replacement is both quick and inexpensive at Madison Automotive. Proper oil changes will greatly extend the life of the PCV valve. Skipping a few recommended oil changes can allow varnish and gum to build up in the valve, reducing its efficiency. So now when your Memphis service technician tells you its time to replace your PCV valve, you will know what he's talking about. If you have had your car for a while and this is the first you've ever heard of a PCV valve, ask your technician to check yours out or call Madison Automotive at (901)386-9600.

Madison Automotive
2457 Covington Pike
Memphis, TN 38128
(901)386-9600
http://www.madisonautomotive.net



How Far We've Come (Newer Vehicle Technology)

Posted February 21, 2021 10:20 AM

Automotive design has come a long way since the days of the Model T, especially when it comes to safety technology.  You can thank computers for a lot of the latest innovations.  Here are a few that have been making their mark in recent years.

Adaptive cruise control.  This is cruise control with a brain.  Not only will adaptive cruise control keep your vehicle going at a steady speed, it will also slow it down and even stop it if the vehicle ahead of you slows down and stops. 

Automatic emergency braking.  We've all been distracted while driving, and you've probably been in a situation where the driver ahead of you has suddenly stopped.  Or maybe your attention wandered for a minute and you looked up to see your vehicle closing in fast on the car ahead of you.  (After all, there are a lot more distractions in your vehicle these days.)  New systems that use cameras, lasers and other types of sensors will warn you to start braking.  If you don't heed the warning, they'll put on the brakes for you. 

Blind spot warning.  We all worry about hitting a car approaching from behind and on either side if we are changing lanes.  Rearview mirrors cover some blind spots but they're not foolproof.  Enter the blind spot warning system; it warns you with a noise or a light if a vehicle is in a spot you might not be able to see.

Lane departure warning.  We all try to stay in our lane, but sometimes our attention wanders.  If you start to drift out of your lane, new warning systems using cameras and other sophisticated sensors will tell you to get back in your lane.  Some send an audible warning, others use a vibration or warning light. Some will even steer your vehicle back into the lane. 

Rearview camera.  There was a time when trucks and SUVs were involved in horrible accidents because the drivers couldn't see what was behind them as they backed up.  Children and pets were among the tragic victims.  Now, inexpensive rearview cameras are required in the U.S. and Canada, saving lives and providing much more peace of mind for drivers of vehicles with rear visibility issues. 

It's important to make sure this safety technology is working correctly for these systems to be effective.  Your service facility can check and maintain these systems as the manufacturer recommends.

Madison Automotive
2457 Covington Pike
Memphis, TN 38128
(901)386-9600
http://www.madisonautomotive.net



Using Proper Fluids in Your vehicle

Posted February 14, 2021 11:43 AM


Today, Madison Automotive is writing about the proper fluids for your vehicle. It's become more complicated with changes in automotive design and manufacturing. It's not that people in Memphis are confused as much as they don't realize how much things have changed in recent years.

If you have questions about the fluids in your vehicle, please don't hesitate to stop by Madison Automotive. You can find us on 2457 Covington Pike in Memphis, TN 38128.
Just give us a call at (901)386-9600.

Let's take engine oil. Twenty or 30 years ago, there were just a handful of different weights of oil. The weight of an oil is a scientific measure of its properties, particularly its viscosity or thickness.

It was common in those days to use a lighter weight oil in the winter when it's cold outside. That way the oil would be able to splash around inside the engine and protect the parts before it was fully warmed up. And a heavier weight oil would be used in the summer. The thicker oil wouldn't thin out too much in the summer heat and vaporize in the engine.

Modern valve trains have become very complicated with more moving parts and small passages than ever before. The valve train is in the top of the engine, so when the vehicle has been turned off for a while, the oil tends to run down to lower areas.  That means the valve train parts are vulnerable at start-up, before the oil starts circulating.

So new weights of oil have been introduced to meet the engineering specifications of these newer engines.

Manufacturers are recommending specific weights of oil. The recommendation is often printed on the oil fill cap. It's certainly in the owner's manual. Of course, Madison Automotive in Memphis can look it up for you.

It's more important than ever to have the correct weight of oil. The wrong weight could actually harm the engine.

Other fluids are also becoming more sophisticated. In the last few years new types of transmission, power brake fluid and coolant have all been introduced for some of the same reasons as for engine oil.

In addition, vehicle manufacturers are now using a wider variety of materials in these systems. Looking at the cooling system as an example, it used to be that the parts were all made out of steel or iron and the hoses were rubber. Now, some parts are plastic, aluminum or other materials.

So the anti-corrosion additives contained in the coolant, or anti-freeze, need to be different in order to protect the different materials used to make the cooling system. If you use the wrong coolant that wasn't formulated to protect your plastic cooling system parts, they could become corroded and fail. And if you're using the wrong coolant, your cooling system won't be covered under warranty. So it's important to use the right coolant and to not mix different types.

Your owner's manual or service advisor at Madison Automotive can make sure you're using the right type. You may have heard of universal coolant. Universal, or global, coolant can be added to other types without harmful reactions. That's OK for an emergency top off, but following your manufacturer's recommendation for your vehicle or other auto type is always a safe bet.

In the area of brake fluid, there are a couple of new formulations. It's important to remember that the new ones aren't better than the old ones. They're just different formulations for different vehicles. So if your vehicle calls for DOT 3, using DOT 4 or DOT 5 is not an upgrade. Use the recommended formula.

There are fluid formulations for vehicles with higher mileage. These are special engine oil, transmission fluid and so on that contain additives to condition and restore seals and gaskets in older engines.

They're fine to use as long as they're a variant of the proper fluid. In other words you can use a high mileage engine oil as long as it's also the correct weight recommended by the manufacturer. Same goes for transmission fluid; as long as it's the right type for your transmission.

Madison Automotive
2457 Covington Pike
Memphis, TN 38128
(901)386-9600
http://www.madisonautomotive.net

 



Arrive Alive in Memphis

Posted February 7, 2021 10:55 AM

We've all seen drivers do crazy things while driving to or from Memphis. A guy shaving in the rear-view mirror, a woman applying makeup, people talking on their phones, texting or drinking from an enormous coffee mug. It's a wonder we even dare drive on TN roads.

The truth is that all of us are distracted when we drive. Unfortunately, traffic, road construction and other external factors are beyond our control. The distractions inside our car, however, are things we can often control.

Here's some things that'll give you more control in your car, and help keep your attention on the roads around Memphis.

  • Memphis drivers who are 16 to 20 years old tend to be more distracted by the radio, CD or MP3 player.
  • Memphis drivers who are 20 to 29 are more distracted by passengers in the car, including small children.
  • Those over age 65 tend to be more distracted by objects or events that are outside of the vehicle.

Other factors like fatigue, stress and lack of sleep make it harder to pay attention to driving – no matter what age we are. It is always better to pull over and take a quick nap than risk falling asleep at the wheel. Memphis drivers are also distracted by thinking about relationships, family issues, money and bills. So what can Memphis drivers do to manage these distractions? Well, the first thing is to eliminate as many as we can.

If you really think you have to shave, change your clothes or put on make-up while driving in Memphis – you're wrong. Just start getting ready earlier so you have enough time to finish those things before you drive around Memphis.

The professional here at Madison Automotive wand you to remember that driving is probably the most dangerous thing you'll do all day – so don't make it any worse. Use these tips to keep you and your loved ones safer behind the wheel in Memphis.

Madison Automotive
2457 Covington Pike
Memphis, TN 38128
(901)386-9600
http://www.madisonautomotive.net



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