AUTONET TV

Your Vehicle's Hissy Fit (AC System)

When you hear hissing sounds coming from your vehicle, you might start thinking the worst.   One type of hissing coming from around your air conditioner may be a normal sound, or it could be a sign of serious trouble.

First - the normal sound.  When you turn off your vehicle, the refrigerant goes from its high-pressure side to the low-pressure side. Some of those noises are normal.  But when it hisses all the time, that's another story.

One cause could be that the refrigerant is leaking.  Air conditioners are fairly complex systems that involve various pumps, hoses, valves and motors.  When your air conditioner is cooling, the refrigerant changes from a gas to a liquid and back.  That refrigerant is under pressure, and there are many places it can leak from. 

A hissing sound can also be a failed valve in your air conditioner's compressor.  It is what controls the refrigerant's pressurization.  It's important to have this fixed fairly quickly after it develops a problem because when it isn't, that can lead to more extensive—and expensive—repairs.

If you hear screeching coming from your air conditioner at the same time you hear hissing, your compressor may be on its last legs. It could also be a defective clutch. 

Any time you hear a noise you haven't routinely heard before, bring your vehicle to us so a technician can check the various components and properly repair the problems.  Air conditioning systems are complex and are best handled by a professional with the right tools and equipment.  When your AC has a hissy fit, let us cool it off and you at the same time.  

East Coast Automotive Services
134 Fern St
Jupiter, FL 33458
(561) 743-1178
http://www.eastcoastautoservices.com

Keep Your Cool in Jupiter

Jupiter drivers rely on their vehicle's coolant system to keep their engine cool. Coolant (also called antifreeze) mixed with water flows through your vehicle engine and absorbs heat. The mixture then flows out to the radiator where it's cooled by air flowing over the radiator. From there the coolant/water mix circulates back through the engine to absorb more heat.

There's a reason we mix coolant and water. Water alone actually does a good job transferring heat from the engine. The problem is that water boils at a temperature that's easily reached inside your vehicle's engine, so it can turn to steam which does not conduct heat as well and is harder to contain.

Also, if it's freezing outside in Jupiter, the water in your engine could freeze while your vehicle is sitting out in the FL cold.

So, if you remember your high school chemistry, you'll know that a mixture has both a higher boiling point and a lower freezing point than either component alone.

Coolant, or antifreeze, is specially formulated to keep your engine safe in a wide range of environmental and operating temperatures in and around Jupiter.

Whenever your vehicle is running, the coolant in the cooling system is working to keep your engine from overheating. When it's cold outside, the coolant acts as antifreeze to keep the fluid from freezing in your engine.

All that exploding fuel in your engine creates a lot of heat. Without coolant, the metal vehicle engine parts would expand so much that the engine would seize up and stop running. The parts could be broken or warp so badly they would have to be replaced. It could even be so bad that the whole vehicle's engine is ruined and has to be junked.

This is why it is critical that Jupiter drivers check coolant levels frequently and have their vehicle's cooling system inspected for leaks. Also your vehicle has a maintenance requirement for draining and replacing your coolant. These recommendations can vary widely, so check your owner's manual or ask us at East Coast Automotive Services in Jupiter.

The reason Jupiter drivers need to change the coolant is that it has additives in it to protect the cooling system. As you can imagine, with all the heat, the cooling system's a pretty harsh environment. The additives keep the fluid from becoming corrosive and damaging the radiator and other vehicle cooling system components. Over time, the additives are depleted and the coolant just has to be replaced.

Many Jupiter auto owners ask our advisors at East Coast Automotive Services why there are different colors of antifreeze. It is very important that you use the correct type of antifreeze. The different types of antifreeze – or coolant – are different colors so you don't mix them up.

They use different materials to make the cooling system, and they require different types of antifreeze to protect them.

So check with us at East Coast Automotive Services in Jupiter or your owner's manual for the right kind because using the wrong coolant can void the warranty for your vehicle cooling system.

East Coast Automotive Services
134 Fern St
Jupiter, FL 33458
(561) 743-1178
http://www.eastcoastautoservices.com

Sounds Like a Hot Rod (Noisy Exhaust System)

Driving along, your exhaust system's rumbling so loud that people turn and stare at you pass by.  You're wondering when the police are going to pull you over for illegal noise.

Your mind immediately thinks, aha! A broken muffler. 

Well, your exhaust system is composed of many more parts than just a muffler. 

Your engine makes power because of thousands of tiny explosions from detonating fuel.  Those explosions make a racket, so engineers came up with a system that acoustically dampens that sound in addition to getting rid of harmful exhaust.

In the engine is the exhaust manifold that looks like several pipes that join up into one pipe.  It directs exhaust to the catalytic converter. The catalytic converter converts harmful gases into less harmful gases using certain chemical reactions.  Then comes the muffler that has baffles inside to quiet the sounds of your engine noise.  Finally: the tailpipe.

All of those pipes and parts are joined together by clamps and held up by brackets, and they ride over some pretty bumpy roads.  They are also exposed to the elements, like salt, water, rocks and grit.  Chances are that one of those clamps or brackets has been weakened by corrosion.  When you hit a bump, bingo! The crack widens into a gap and there's a spot for the engine noise to come roaring out instead of being directed into the muffler's quieting chambers.

You might be surprised to know that the exhaust system can rust from inside out.  How? Moisture is one component of exhaust, and moisture on the inside can do the same kind of damage as moisture from the outside. 

It's a good idea to have your exhaust system looked at regularly by a technician.  He or she can evaluate the condition of the metal and recommend when it might be time to replace parts before they break.

Then you'll have a decision to make.  Newer exhaust systems are made out of stainless steel that is much less prone to corrosion issues.  Others are made of aluminized steel that also fights rust.  You've probably already guessed that they can cost more, but the extra price up front may give you an exhaust system that will last much longer. 

Sure, with a repaired exhaust system, you won't have quite the head-turning vehicle you once had.  You'll just have to live with all the quiet.

East Coast Automotive Services
134 Fern St
Jupiter, FL 33458
(561) 743-1178
http://www.eastcoastautoservices.com

Time for a Brake (Brake Pad Replacement)

Stop! It's one of those things your vehicle has to do consistently and reliably.  That's why brake maintenance is vitally important, worthwhile for you to make sure stays up to date.

A brake system has many components. If your vehicle has disc brakes, they have pads that make contact with the rotors (the metal discs).  Those pads usually have a metal back, and the part that presses against the discs is made of a material which provides friction to stop the vehicle. Because of that friction, the pads are expected to wear down and eventually the rotors will, too.  But the pads usually are the part that will need to be replaced more often. But how do you know when it's time?

There are several signs, one of which is when your brakes squeak or make a high-pitched sound when you step on the brake pedal.  Many newer vehicles also have sensors on the brake pads.  When the pads get worn down to a certain point, the sensor will tell the vehicle's computer to turn on a light on the instrument panel.  When that light comes on, it's time to have your service facility check out what's going on.  If you don't know what that light looks like, ask your service advisor or look it up in the owner's manual.

Some vehicles also give you a reminder based on the distance you've traveled. It may be a message that displays on the dash or a light that illuminates. 

Your best bet is to have your vehicle regularly serviced at one shop you trust.  They will keep a record of your brake maintenance Then, when you take your vehicle in for oil changes or other routine things, they'll check your brakes for wear.  Sometimes you'll only need pads, but you may also need rotors or other parts replaced.  Oh, and you need pads replaced in pairs. That way stopping power will be equal on both sides and your vehicle won't pull in one direction. 

Brakes make up a key part of your vehicle's safety systems.  Keep them in good shape and they'll be able to stop your vehicle when you press down that pedal.

East Coast Automotive Services
134 Fern St
Jupiter, FL 33458
(561) 743-1178
http://www.eastcoastautoservices.com