AUTONET TV

What Is an EGR Valve? (EGR Valve Service)

If you've ever felt your vehicle hesitate, go, then hesitate again, you might think there's something wrong with the transmission.  After all, it's not moving smoothly  down the road.  But there are plenty of malfunctions that can cause those symptoms, one of them being something you may have never heard of: the EGR valve.

EGR stands for Exhaust Gas Recirculation. It's a system that channels small amounts of exhaust back into the engine to cool down the cylinders and reduce polluting gases.  Those include nitrogen oxides that can cause smog. The EGR valve regulates how much of the vehicle's exhaust gas is recirculated. After years and long distances traveled, that valve can get clogged or fail. Sometimes the EGR valve can stick open.  When the EGR valve isn't working properly, your vehicle can start releasing those nitrogen oxides and pollute the air.

The symptoms of a malfunctioning EGR valve include:

• Engine losing power
• Engine idling roughly
• Pinging and knocking sounds in the engine
• Stalling and hesitation
• Fuel economy decreasing
• Check Engine light illuminated

Depending on its condition, the EGR valve can be cleaned or it may need to be replaced.  Consult with your service advisor to see what options are recommended to you.

The EGR system is part of your vehicle's pollution and emissions control equipment. If you care about keeping our planet's atmosphere clean, you'll want to make sure it's doing its job—for everyone's benefit.

Gilmore's Auto Service
2151 N Broadway
Walnut Creek, CA 94596
(925) 939-9430
http://www.gilmoresauto.net

Gilmore's Auto Service 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 Walnut Creek 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 Gilmore's Auto Service service advisor has a systematic process of testing components and connections to get to the source of your trouble. The initial symptoms determine where to begin the diagnostic process, and he follows the procedure until he tracks down the culprit.

For example, diagnostic tests at Gilmore's Auto Service could reveal that the alternator is not generating enough electricity to keep the battery charged. Is the alternator bad? Not necessarily. A worn serpentine belt tensioner could be allowing the belt that spins the alternator to slip. So the perfectly good alternator is not spinning at the proper speed. The solution for Walnut Creek drivers is to replace the serpentine belt system – not the alternator.

The good news for Walnut Creek drivers is that our highly-trained technicians at Gilmore's Auto Service can properly diagnose all your vehicle troubles and make the necessary repairs to get you back on the road in Walnut Creek.

Give us a call.

Gilmore's Auto Service
2151 N Broadway
Walnut Creek, CA 94596
(925) 939-9430
http://www.gilmoresauto.net

Bad Vibes (Disc brake rotor problems)

If you were to name the most important safety feature on your vehicle right now, what would your answer be? A lot of driving experts would agree that it’s your brakes.  Most newer vehicles use a well-engineered and efficient style of brakes called disc brakes. 

The name disc brakes comes from one of the components: a disc attached to the wheel hub that is squeezed by parts called calipers.  If you’ve ever ridden a bicycle with hand brakes, you probably have seen how they squeeze against the rim of the bike wheel to stop the bike. It’s similar to the way your vehicle’s calipers squeeze against the disc rotor, with added parts called brake pads attached to the calipers that are what create the friction and stop your vehicle.

Here’s why disc brakes need regular maintenance.  Over time, that friction creates wear and tear on the brake pads and the rotors, and you’ll start to see the signs.  Your brakes may have one of the 3 “S” sounds: squeaking, squealing, or scraping. The sound is usually the first sign of brake pad wear which can lead to rotor damage.  Soon you may notice a pulsating or vibration when you brake. That’s because your once smooth and straight rotor disc is warping from the heat generated from friction. Or it may be due to wear.  Eventually, your brakes will take a longer distance to stop your vehicle, and the rotors can have grooves carved into them.

When you start noticing any of these signs, it’s a good idea to have them inspected by a trained technician.  They will measure the rotor thickness, check wear patterns for grooves and heat discoloration, and see how much of the brake pads remain. They will also check to make sure all brake components are moving freely, check your brake fluid, and look for corrosion.

Most vehicle manufacturers require worn or damaged rotors to be replaced, not resurfaced. It’s all part of a complete brake job, replacing pads and the brake hardware parts along with the rotors. It reduces the chance of premature failure.

How often you will need your brakes serviced depends on the manufacturer’s recommendations, your driving habits, and the environment you live in.  Your service facility can recommend the best replacement parts based on those factors. 

Regular maintenance and attention are vital for keeping your brakes performing like they are designed to. Remember, your brakes are your vehicle’s most important safety feature.

Gilmore's Auto Service
2151 N Broadway
Walnut Creek, CA 94596
(925) 939-9430
http://www.gilmoresauto.net

What is a TPS? (Throttle Position Sensor)

You know you have an accelerator pedal; step on it and your vehicle is supposed to go.  But did you know there is a part in your vehicle that keeps track of where the throttle is? It's called the Throttle Position Sensor, or TPS.

The TPS is a sensor that helps your vehicle figure out the right mix of air and fuel is reaching your engine.  It does that by keeping track of the throttle and sending that information to your vehicle's computer.  Other factors play a role in how well your engine is performing, including air temperature, how fast the engine is turning over and air flow. 

When the TPS isn't working right, you may find your vehicle won't accelerate or doesn't have the power you're expecting when you press on the accelerator.  In some cases, it may accelerate on its own.  Sometimes your vehicle won't go over a certain speed.  Your Check Engine light may go on.

Any of these symptoms should be checked out soon.  If your TPS stops working right, your vehicle may not be safe to drive.  Fortunately, most vehicles have a "limp home" mode that will allow you to get off a busy road to a safe spot. 

Your service advisor can let you know which TPS is the correct replacement for your vehicle.  Your shop may have to re-program the new TPS so it works correctly with other software in your vehicle.

It's a fact of life these days that computers control many of a vehicle's functions. The sensors that feed information to those computers help make your vehicle work the way it was engineered to and keep you motoring down the road safely and efficiently.

Gilmore's Auto Service
2151 N Broadway
Walnut Creek, CA 94596
(925) 939-9430
http://www.gilmoresauto.net

Steer Clear of Power Steering Problems (Power Steering Maintenance)

We usually take our vehicle's easy steering for granted until something goes wrong.  Power steering is what makes it almost effortless to turn the steering wheel, aiming your vehicle in the direction you want to go. Without the assistance of power from the engine, steering would be a laborious process, so you want to make sure the system is working well.

Power steering systems are usually one of two types, hydraulic and electric.  The hydraulic type uses a pump that is driven by either a belt or an electric motor.  This system uses hydraulic fluid to create pressure that gives your steering the power assist.  Since that pump is always working, time and distance traveled eventually take their toll, and these systems need to be periodically inspected.  Also, while that hydraulic fluid can last for years, it should be replaced periodically as it degrades over time. Your vehicle's owner's manual contains the manufacturer's recommendations.

A technician can check for leaks in the hoses, pump housing or reservoir.  Also, the belts should be inspected and so should the pump, as these can fail.  Signs of a failing pump are a groaning noise when you turn the steering wheel, stiff steering, squealing noises when you first start your car and puddles of a reddish-brown fluid under your vehicle. 

The other type is called EPS, or electric power steering, which is becoming more commonly used in the latest vehicles.  It only delivers power assist when you need it and has an electric motor that supplies that steering help.  It's more efficient, accurate, compact and clean. And because it has a lot fewer components, it's easier to maintain. 

If you have electric power steering, you may notice sometimes it's hard to turn the wheel or your Check Engine light comes on.  Sometimes the power assist motor fails or there can be problems with electrical connections.  Any time you have symptoms, it's important for your safety and that of drivers around you that you have a technician check them out.

Properly working brakes are essential for the safe operation of any vehicle.  Stop! And make sure yours are working properly.

Gilmore's Auto Service
2151 N Broadway
Walnut Creek, CA 94596
(925) 939-9430
http://www.gilmoresauto.net

Power Failure (Broken Power Seat)

Know anyone who doesn't love a power seat in an SUV, a car, truck or van? They're convenient and precise in their adjustments.  But when they break, oh, what a pain.  Not only is it inconvenient, it may leave your seat position too close to the steering wheel or too far from the pedals.  This is a must-fix problem.

There are many things that cause a power seat to fail:

• Seat controls.  These are either at the side of the seat or in the door.  Both are places that can be exposed to moisture or other contaminants.  When the controls stop working, they usually need to be replaced.
• Seat motor.  Electric motors are what make a power seat move, and sometimes they fail.  Sometimes they just get worked to death and die of old age.  Replacement is the most common remedy.
• Fuses. A power seat is, after all, powered by electricity and all vehicle power systems have fuses to protect them.  A technician can determine which fuse may have blown and replace it.  But it's also important to figure out what caused the fuse to blow and deal with that, too.
• Wires.  There are wires under the seats that move when you move the seat.  Sometimes they get stretched, kinked or ripped.  In a power seat malfunction, it may be a wiring harness that needs to be replaced.
• Gears.  They help the seat move and may need to be realigned or replaced.
• Obstructions.  Yes, a piece of trash or a kid's toy has been known to jam up the works of a power seat. Taking them out of the mechanism may get your seat working again.

Most people pay extra to have power seats in a vehicle. So make sure you keep that convenient feature working. And don't forget that it's a safety issue, too.

Gilmore's Auto Service
2151 N Broadway
Walnut Creek, CA 94596
(925) 939-9430
http://www.gilmoresauto.net

Objects in the Mirror (Rearview Mirror Safety and Maintenance)

You may remember a song that went, "Objects in the rearview mirror may appear closer than they are." While that was a song about life's lessons, there are a few things we should all know about how important rearview mirrors are to safe driving.

While new electronic devices are helping drivers be aware of surrounding traffic in high-tech ways, the good old rearview mirror is still a dependable way of letting you know what's around you.  There are usually 3 on each vehicle, 1 attached to the windshield inside and 2 attached outside on each of the front doors.

It's important that they be adjusted properly before you start driving (not while you're driving). Experts say the windshield rearview mirror should cover the area behind the vehicle while the outside mirrors should not simply duplicate that view but extend it to the sides, where blind spots normally are.

Your rearview mirrors must be able to hold the positions they're adjusted in; it there's play in them or they move around, you'll never be sure they're pointed in the direction that will let you see where traffic is.  The one on the windshield must be firmly attached.  If it won't stay where you want it, head to your service facility where they can tighten it or replace any parts necessary to let the mirror maintain its aim. If it has fallen off the windshield completely, a technician can reattach it with the proper adhesives or fasteners.  There may be electronics that need to be properly connected as well.

The outside mirrors cover your blind spots and they must be able to hold their adjustments, too.  Many adjust electronically; switches and motors can fail, electrical connections can detach or become corroded and the reflective glass can crack, discolor or develop a hazy fog.  A technician can diagnose and repair those problems and recommend any replacement parts you might need.  Mirrors that are adjusted manually also should be restored to proper working order in order for you to maintain this important rear visibility.

Drivers don't think about their rearview mirrors all that much.  On reflection, don't they deserve respect and care for the important job they do?

Gilmore's Auto Service
2151 N Broadway
Walnut Creek, CA 94596
(925) 939-9430
http://www.gilmoresauto.net

Such a Little Part (Climate Control Resistor)

You expect your heater/air conditioner to work like it should.  You have a control for temperature and one for fan speed.  You even have a control for what vents the air comes out of. 

Don't be surprised one day if your blower fan develops a mind of its own and starts going crazy.  Most of the time, you may find that it starts blowing at full speed, and nothing you do to try to control it does any good.  This is what may be happening.

Your blower motor has an electronic component called a resistor.  It does what its name says; it offers resistance.  When you want the fan to run more slowly, you turn the fan speed down.  That resistor accomplishes that by turning its resistance up.  When the resistor fails, the power has nothing to slow it and the fan speeds up. 

It's a small part and can fail due to age or corrosion.  It's usually not an expensive part, either, but it's often found in a location that's not that easy for the technician to get to.  That means labor costs will vary depending on the design of your vehicle. 

Occasionally, a faulty resistor can cause the blower motor not to work at all or only partially come on.  But other things can cause that as well, such as a faulty fan switch or vent control. 

This is where a technician's training comes in.  Special equipment can track down precisely where the issue is so you can be assured the correct part is being replaced.

It's just not pleasant when the blower motor isn't following orders.  Have your service facility check it out so you can be the blower's boss, like it should be. 

Gilmore's Auto Service
2151 N Broadway
Walnut Creek, CA 94596
(925) 939-9430
http://www.gilmoresauto.net

Let Gilmore's Auto Service Help You Keep Your Vehicle Another Couple of Years

Walnut Creek area residents may remember when the U.S. government's “Cash for Clunkers” program made a splash on the news scene. People were offered incentives to trade in old vehicles for new, in the interest of better and improved air quality from reduced emissions.

But a lot of Walnut Creek drivers want to hang onto their old clunkers. They're dependable and they're paid for. Owners would love to see the odometers on those vehicles turn past 200,000 miles (320,000 km), as long as the repair bills don't get too expensive.

There are a lot of vehicles on CA roads that have run past the 200,000 mile (320,000 km) odometer reading. Is there something that their owners are doing that keeps these vehicles on the road? Or did they just win the “lemon lottery,” and luck out by getting a particularly good vehicle? Not surprisingly, most of these owners have something in common. They never skip an oil change. Can keeping a vehicle on the road for 200,000 miles (320,000 km) really be that easy for Walnut Creek drivers?

Actually, it makes sense. Oil is the lifeblood of a vehicle. Clean oil ensures that the engine will run efficiently and staves off the build-up of sludge that can eventually damage engine parts. Oil changes remove dirty oil and replace dirty oil filters, keeping an engine clean and running smoothly, just like eating right keeps our hearts healthy by preventing build-up in our arteries.

But there's another reason why not skipping an oil change can result in a longer life for your car. When you bring your car in to Gilmore's Auto Service for an oil change, all of the fluid levels are checked and topped off. If these fluids are depleted, dirty or low, they can damage the engine.

If a fluid is significantly low, it usually indicates a leak somewhere, leading to an inspection of relevant parts. This inspection and the replacement of the worn part can prevent repair bills and maintain the health of the engine.

At an oil change, your technician at Gilmore's Auto Service will also do a quick check for worn belts or hoses, uneven tread wear, leaking shock absorbers and other signs of wear and tear. This advance notice allows the owner to replace parts before they break down and possibly damage your vehicle.

The oil change is also a good time to review any other service that the vehicle might need. Many car owners rely on their pros at Gilmore's Auto Service for good auto advice on check-ups and follow-up vehicle care that will keep older cars running well.

Parts wear out on older vehicles. There's no avoiding it. As the odometer chugs upward toward 200,000 miles (320,000 km), the vehicle will need several batteries, a couple of alternators and water pumps, a new set of shocks and possibly some brake rotors. But these items—all together—add up to far less than the cost of a new vehicle.

Good vehicle care and preventive maintenance are the hallmark of Walnut Creek drivers who have kept their vehicles on the road and running past the age when most of us have given up and headed back to a car lot. We can learn from their wisdom.

So treat your car right: Take good care of it and don't skip the check-ups at Gilmore's Auto Service in Walnut Creek. 

Gilmore's Auto Service
2151 N Broadway
Walnut Creek, CA 94596
(925) 939-9430
http://www.gilmoresauto.net

Have a Ball! Know your Ball Joints (Ball Joints)

We all have joints in our own skeletal system, but did you know your vehicle has some joints of its own? One of the most important is called a ball joint.

One of the interesting things is that it's somewhat similar to the ball and socket joints we have in our hips and shoulders.  A ball joint allows two parts it joins together to move in more than one direction at the same time.

Think about your wheels.  They have to move up and down when there are bumps in the road but in sideways directions when you are making a turn. As you can see, the ball joints are important for your steering and handling to work correctly.

Since ball joints do so much, they can wear out and become loose.  When the ball wears down or the socket gets worn, there can be too much play in them.  It can get so bad that the ball can come out of the socket and your wheel can fall off, a dangerous situation.  Ball joints can also seize up.  Some of them are sealed and never require maintenance; others require periodic lubrication.

Here are some signs that your ball joints are going bad:

• Your vehicle pulls to one side
• You can hear a clunking noise coming from a wheel area
• Your tires are wearing unevenly, especially on the inside

The earlier a failing ball joint is discovered, the better. The best way is to have regular inspections by a technician.  Your service facility will periodically check ball joints at intervals recommended by the manufacturer. The cost to replace them can vary widely depending on whether you have a vehicle with a 2-ball or 4-ball configuration.  Also, sometimes just the joints can be replaced, but other times they are part of a larger control arm assembly that has to have all the parts replaced at the same time. 

Your vehicle's proper steering, handling and tire wear all contribute to a better, safer driving experience.  Make sure your ball joints are up to the job.

Gilmore's Auto Service
2151 N Broadway
Walnut Creek, CA 94596
(925) 939-9430
http://www.gilmoresauto.net