AUTONET TV

Losing Your Cool (AC Condenser Replacement)

It’s always more comfortable in your vehicle when you can control temperature and humidity in the cabin. Air conditioning, which is standard on most newer vehicles, is a vital part of that comfort, and a key component of that system is the condenser.

The condenser converts the refrigerant gas into a liquid by cooling it down.  There are a few reasons the condenser can fail.  It can start leaking, which is usually caused by faulty seals and tubes, or debris from the road can damage it since it sits in a vulnerable spot at the front of your vehicle.  

Another way your condenser can be damaged is when bits of metal are released after your vehicle’s air conditioning compressor fails and are sent into the condenser. In both cases, you will have to have the condenser replaced as well as other components that are part of the system.

Here are signs that your condenser needs replacing.  When you turn on your air conditioning, it won’t make the air as cold as you’re used to it getting.  Or it may not get cold at all. Since other things can cause those symptoms, it’s best to bring your vehicle in to us to have one of our technicians determine where the problems are.

They’ll check the system’s pressure and thoroughly inspect for leaks.  If the problem is the condenser, they’ll replace it, refill the refrigerant, search for any more leaks in the system and give your air conditioning a final test to make sure it’s operating correctly.  

Keeping your air conditioning system working helps maintain the value of your vehicle.  It not only keeps the cabin cool when it’s hot outside, but also helps the defroster work properly and controls humidity in all seasons and climates.  Now, that’s very cool.

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886

Go with the Flow (MAF Sensor Replacement)

If your vehicle has an internal combustion engine, it depends on two things to make propulsion power for you to be able to motor on down the road: fuel and air.  The engine mixes the two in just the right proportion so that they can be ignited, creating a series of tiny explosions that are coordinated in such a way that your vehicle moves steadily ahead.

One of the key parts to making sure that mixture of air and fuel is correct is a little tube that measures the amount of air that’s coming into the engine.  It’s called a Mass Air Flow sensor, or MAF sensor.  There are two wires in this tube, one of which is heated up with electricity and the other isn’t.  When the air flows over the heated wire, it cools.  When the temperature of the two sensing wires is different, the MAF sensor either increases or decreases the current to the heated wire to try to make it the same as the other wire. That’s sent to a small computer that tells the engine to change the amount of air going into the engine.

Some signs of an MAF sensor problem?  Your vehicle doesn’t have as much power as it used to, or your fuel economy might drop.  Your vehicle may not start,   and the Check Engine light may come on.

If you spot these signs, it’s important to bring your vehicle in so we can check things out.  At the same time a technician looks at the MAF sensor, they’ll also check the connector that runs to the engine’s computer and replace it if necessary. They’ll also inspect other parts of the system, such as hoses, for problems.  

By the way, one way to minimized MAF sensor problems is make sure your vehicle’s engine air filter is regularly changed. That can help you be sure that the air that gets to your vehicle’s engine is clean.

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886

Don?t Be Hosed (Radiator Hose Replacement)

If you are like most drivers, you don’t worry too much about what shape your radiator hoses are in.  But they are a vital part of your coolant system, helping carry engine coolant from the hot engine to where it is cooled off in the radiator.  

When the cooling system has a problem, you will likely see your vehicle’s temperature gauge showing you it’s running at a higher temperature than it usually does. Or maybe the low coolant light has come on.  If either of these happens, it’s important that you not drive too long since a hot, running vehicle can suffer expensive damage quickly.

Radiator hoses can be damaged by being subjected to temperature extremes, both hot and cold. In addition to the temperature gauge climbing or low coolant light illuminating, there are other clues that may tell you your vehicle is leaking fluid.  You may notice a green, yellow, brown or purple fluid pooled on the ground around your vehicle.  

At any of these signs, it’s time to bring your vehicle in for service soon.  A technician can inspect hoses for leaks, deformities and other problems, as well as looking for cracks and wear.  They’ll also check the condition of the water pump, since problems with it can be another reason coolant will leak out from under your vehicle.

It is better to periodically have your hoses checked rather than waiting until they fail.  How often you should have yours replaced depends a lot on what vehicle you own, and in what conditions it is driven. Rubber degrades not only by temperature but also by what materials it comes in contact with.  For example, oil leaking on a radiator hose can prematurely cause that hose to fail. Age is another factor.  

We recommend you have one of our technicians inspect your cooling system regularly so you don’t get “hosed” by a failure at an inconvenient time.

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886

What?s That Yellow Squiggly Line Anyway? (What Warning Lights Mean)

You may have noticed when you start your vehicle, you’ll see several symbols light up on the dash.  They’re different colors and shapes, and sometimes it’s hard to figure out what each of those symbols mean.

They are warning lights and symbolize something in your vehicle is sending you a message.  It’s the result of today’s vehicles having lots of computers.  The good thing about having so many of these warning lights is they can let you know there’s an issue in need of attention before a more serious failure.  

Sometimes it can be challenging to figure out what each light means, so here are some of the most common ones.  One looks like your vehicle’s engine from the side, the Check Engine light.  It alerts you to something as simple as a loose gas cap to a far more serious problem like an overheating engine.  When the Check Engine light comes on, bring it into our shop.  If it’s blinking or flashing, it likely has more urgent issues, so bring it in sooner.

Another warning light looks like a genie lamp with a drip at the end, and it’s the engine oil light. When it comes on, it means something’s wrong with the oil pressure, and that can be a sign of serious engine problems.  Don’t ignore the oil light and bring it in for service as soon as you can.

One warning light looks like an old-style thermometer with a bulb at the bottom and degree marks on the side sitting in fluid.  That’s all about your coolant level, and when it comes on, your engine may be overheating.  It’s another one that’s telling you to bring it in to us for service quickly.

When your brakes aren’t working right, a light comes on that looks like a circle with a pair of half circles at the sides and an exclamation mark in the middle. Driving with malfunctioning brakes is dangerous, and it’s another warning light that should prompt you to get your vehicle looked at very soon.

If you see a light on your dash you don’t understand, try looking it up in your owner’s manual or bring it into us so we can help decipher it.  Warning lights are there to help you, and so are we.

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886