AUTONET TV BLOG

Full of Hot Air (Air Conditioning)

In warm weather, you want to be in a cool vehicle. When we're talking cool, we don't mean stylish or trendy, but cool as in not sweltering inside.  And if your vehicle's air conditioner stops working correctly, it seems to always break at the worst time—during a heat wave. 

Automotive air conditioning problems fail for a number of reasons:

• Blower motor not working.  No air comes through the vents, even though the rest of the system could be working fine.
• Refrigerant leak. When the gas that cools the air off escapes from the air conditioning system, your air conditioner can no longer cool off the outside air
• Condenser and compressor. These are parts of your AC system that compress and expand a refrigerant gas to cool off the outside air. They are fairly complex.

When you bring your vehicle into our service center, we'll run a series of diagnostic tests to figure out what isn't working correctly.  The air conditioning system has a lot of parts. There are electrical and mechanical components plus a series of hoses and tubes that all can wear out over time.  Any one of these can fail.

A lot of drivers think they have a "Freon leak" and believe that if they get their AC system recharged with the refrigerant, everything will be fine.  But AC systems are so complex, it usually takes a trained technician to accurately figure out where the problems are.

Sometimes the solution is simple.  If your blower motor wears out or there's a fuse that has blown, the technician can replace the bad parts and you'll quickly be back to enjoying your rolling refrigerator. But when compressors or condensers go bad, those are much more involved and expensive to fix.

For instance, electrical problems can sometimes lead to acid to build up and corrode other parts of your AC system.  Sometimes that causes so much damage, your whole air conditioning system has to be replaced. That's why it's always a good idea to have your AC regularly maintained.  Our technicians can find a problem early and prevent more expensive repairs down the road. That's really the cool way to go.

Garrigan's Auto Repair Shop
6465 E GOLF LINKS RD
TUCSON, AZ 85730
(520) 572-7505
http://garrigansautorepair.com

Reaching the Braking Point (Brake hose replacement)

If you notice your brakes aren’t working like they used to, that’s the kind of thing that’s important to have checked out soon.  That’s because your brakes are extraordinarily important to the safe operation of your vehicle. 

Sometimes you feel like your brake pedal is feeling a little soft or it’s lower than usual. Or you might feel like the brakes are on all the time, holding you back. Maybe when you release the brake pedal, it comes back up more slowly than usual. There are a few different problems that can cause your brakes to feel like any of those things, so bring your vehicle in to us and we can inspect them.

One possible cause of those brake issues is a damaged or worn-out brake hose.  Your hydraulic brakes work by carrying brake fluid to each of your wheels.  There are steel lines that carry the fluid most of the way, but because your wheels are moving all the time, a flexible hose is used to connect the steel lines and the brakes themselves.  

Sometimes those brake hoses leak, since there’s a lot of pressure inside when you use your brakes dozens or hundreds of times a day.  Road debris, aging, and corrosion at the hose fittings can loosen up that connection.  Sometimes the hoses can get blocked up if the interior lining separates from the outside. And sometimes, it’s simply a matter of the hose getting too old, and age eventually causes the rubber to fail.

When you experience brake problems, bring your vehicle in so we can have a technician take a look. Visual and manual inspections can usually pinpoint the problem areas.  The technician will look for corrosion and physical damage, plus run a pressure check.

For your vehicle to be safe on the road, your brakes need to be working the way they were designed to.  Stop. And think about it!

Garrigan's Auto Repair Shop
6465 E GOLF LINKS RD
TUCSON, AZ 85730
(520) 572-7505
http://garrigansautorepair.com

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 can warm up your newer vehicle for your own personal comfort.  But consider how much fuel you are wasting.  That is not only throwing away money, it's a waste of natural resources.  And it puts more carbon into the atmosphere. 

Automakers have to be mindful of what fuel economy their vehicles can achieve.  So the flip side of the remote starts they offer is a "stop-start" feature.  When you stop your vehicle, even at a stoplight, your vehicle will turn the engine off.  When you take your foot off the brake and step on the accelerator, it starts up right away.  That feature can save as much as 10 percent of the fuel your vehicle uses. 

Your vehicle may not have that start-stop feature, but you can still save fuel by shutting off your engine manually if you are waiting somewhere, like a parking lot or perhaps sitting outside your child's school waiting to pick him or her up.  It saves you money and contributes to a healthier atmosphere for our planet.

Take Charge! (Battery Testing)

OK, so you probably take your vehicle's battery for granted.  Turn the key or push a button and it starts right up.  During times of warmer weather, you probably think your battery can take it easy.  But it may surprise you to learn that hot weather can be much harder on a vehicle's battery than cold.  So it's wise to know what condition your battery is in BEFORE you find out the hard way—being stranded by a dead battery.

Your vehicle's battery won't last forever; an average battery will last 3-5 years.  When's the last time yours was replaced? You probably have no idea.  Your vehicle will usually give you some hints that it's in need of attention.  See if any of these are familiar:

• your engine doesn't turn over as quickly as it used to
• your headlights are a little dimmer
• your Check Engine or Battery dashboard light is on
• you hear a click when you try to start your vehicle
• some electrical equipment in your vehicle isn't behaving the way it used to
• your engine smells like rotten eggs
• the terminals on your battery are corroded
• your battery was made more than 4 years ago

Even if there are no signs your battery is on its last legs, it's a good idea to have it periodically checked at your vehicle service facility, at least once a year. A technician will check the date it was made (it's on the battery's case). They'll inspect your battery, cables and connections, looking for corrosion, bulges in the battery or any other abnormal signs.

Using special diagnostic equipment, the technician can run some tests on your battery and vehicle's electrical systems. They can measure how fully charged your battery is and how much potential it has to hold a charge.  Then, your service advisor will tell you how much more life to expect from your battery or recommend it be replaced. 

It you need a new one, your service advisor can recommend options for you. Important factors include brand, warranty, where the terminals are on the battery, the ability to handle different cranking loads and temperature ranges.  Bet you didn't know vehicle batteries can be that different!

Garrigan's Auto Repair Shop
6465 E GOLF LINKS RD
TUCSON, AZ 85730
(520) 572-7505
http://garrigansautorepair.com