AUTONET TV

Low Power Mystery (Ignition Coil Service)

It's no fun when your vehicle just doesn't run the way it used to.   You may notice (especially in cold weather) the engine won't start easily or when it does start, it doesn't run smoothly. It may not have much power at all. You also may have had to stop at the gas station more often, a sign your fuel economy isn't what it used to be. 

There could be a few different things that cause those symptoms, but one culprit could be a bad ignition coil. The coil takes the voltage from your battery and multiplies it before that power is sent over to a spark plug. That allows the plug to fire off a good jolt of electricity that ignites the fuel in your cylinder and powers the engine. 

There's usually one ignition coil for each cylinder (or sometimes for a pair of cylinders). If only one of them is not pushing out enough electricity, it can cause big trouble with your engine performance.  Other signs of a bad ignition coil include engine backfire, an oil leak and your Check Engine light coming on.   When that light comes on and you have some of those other signs, you need to have your repair facility check things out fairly soon because you may be damaging your engine and wind up with a far more expensive repair.

A technician will check for a computer code to pinpoint which cylinder is having the problem.  Using other diagnostics, the technician can rule out other components that might be causing the engine to misfire.  Ignition coils usually last 100,000 miles/160,000 km, but other engine conditions can cause them to fail before then. 

Your service advisor may suggest getting all your coils replaced even though only one is malfunctioning. That's probably a good idea in a higher mileage vehicle since the other coils may be close to failure, too. It's also wise to do that if your vehicle's coils are located in a hard-to-reach spot so you likely won't have to spend the money for that labor again when another one fails.

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

Water Pump

Your cooling system is very important. It circulates coolant through the radiator and your engine to protect your vehicle from overheating. There are five main components to the cooling system:

• the radiator
• the radiator cap
• the hoses
• the thermostat
• the water pump

The water pump's like the heart of your cooling system, circulating the fluid throughout your vehicle. It's a small pump that's driven by the engine; usually by belt, but sometimes by a chain or gear.

The water pump only operates when the engine's running. Water pump failure is pretty routine. We see it often at Gilmore's Auto Service. Some start failing at around 40,000 miles/64,000 km, but most fail by 100,000 miles/160,000 km. Consult your owner's manual or friendly and knowledgeable service advisor at Gilmore's Auto Service to see what's recommended.

Since a water pump either works or it doesn't, you need to change it when it fails. Water pumps fail in one of two ways: the bearings fail or they begin to leak. It's possible to have a leak from a cracked water pump, but it usually leaks at the gasket where it attaches to the engine.

So how can Walnut Creek drivers tell when the water pump is failing? If you can hear a low-pitched grinding sound coming from the water pump, it's got a problem. If you can see coolant in that area, you've got a leak.

Some water pumps are driven off the timing belt. They might be under a plastic cover so you can't see the water pump. Look for coolant on the driveway. If you see some, have Gilmore's Auto Service check it out.

Most timing belts need to be changed at 60,000 miles/97,000 km – some longer. It's a good idea to change your water pump at the same time if it's one of those that's driven off the timing belt. To start with, 90% of the work's already done with the timing belt change. And if you don't and develop a leak later, you'll have to change the belt again along with the water pump because the belt will have been contaminated by the leaking coolant.

Gilmore's Auto Service can replace a failed water pump with a brand spankin' new one or with a rebuilt pump. Rebuilt will save you some money, but ask your service advisor at Gilmore's Auto Service what he thinks. Don't feel too bad if your water pump gives out. They will all wear out eventually. We can get you back on the road and on with your life.

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

Exhaust Service at Gilmore's Auto Service in Walnut Creek

Whenever they hear the term "exhaust service," most Walnut Creek residents think about exhaust pipes and mufflers. Well, actually, exhaust service at Gilmore's Auto Service is a lot more comprehensive these days. For example, catalytic converters were mandated in 1976 and on-board emission control computers in 1990. Governmental emissions requirements have forced manufacturers to come up with much more sophisticated ways to comply with environmental regulations.

Exhaust service has really become exhaust and emissions service. High-tech computer controlled emissions devices are now a big part of exhaust service. Because it is so sophisticated, your recommends you have your emission system checked out by a qualified Walnut Creek exhaust technician regularly to make sure everything is working right - usually every 6 months or 10,000 miles/16,000 kilometers.

If your Check Engine light comes on, especially if it's flashing, get your car looked at right away. Technicians at Gilmore's Auto Service in Walnut Creek handle emission problems everyday. You might have exhaust or emissions trouble if your car is difficult to start, runs rough, is noisy or smoking. Call Gilmore's Auto Service at (925) 939-9430 to schedule an appointment if you experience these problems.

Let's review the exhaust system. We will start from the top with the exhaust manifold. That is the part that attaches to the engine and collects the exhaust from the cylinders and directs it into the exhaust pipe. Exhaust gaskets help seal the connection with the manifold and various other joints along the way. If the manifold is cracked or loose or a gasket is leaking, gases could escape into the passenger compartment where you ride. Carbon monoxide can be deadly, so it is important that your exhaust system doesn't leak. The exhaust pipes connect the various components. They can rust or be damaged by a rock, so they need to be inspected periodically.

Next is the catalytic converter. This part looks like a muffler. It changes chemicals that are dangerous to your health and our Walnut Creek environment into harmless carbon dioxide and water. It doesn't require any maintenance itself. But eventually they wear out. Walnut Creek drivers find this out when their car fails an emissions inspection.

Now the muffler. Its main job is to quiet engine noises. Mufflers work by either absorbing or baffling sound. And you can actually customize your car's sound with different mufflers - anything from whisper quiet to bad-boy rumbley. Rusted or road-damaged mufflers can leak and need to be replaced right away. Talk to your friendly and knowledgeable service advisor at Gilmore's Auto Service .

The exhaust system is attached to the vehicle by a series of hangers and clamps. These fasteners hold the system in place. When hangers come loose or break, hot exhaust components can touch and melt wires, hoses and lines.

Finally, we end at the tailpipe. This is the final outlet for the exhaust. These can be plain-Jane or pretty flashy. Also, the oxygen sensors monitor the oxygen content of the exhaust so the engine control computer can adjust the fuel-to-air mix to keep the car running right.

Exhaust and emissions service at Gilmore's Auto Service in Walnut Creek covers plain old pipes and high-tech computers. It impacts everything from life-and-death safety due to exhaust leaks to fine-tuning the sound of your ride.

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

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!

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

Maintenance on My Mind

Ask any Walnut Creek man or woman if they've taken their vehicle in for preventive maintenance lately, and the answer may well be “no.” Surveys indicate that over 80% of vehicles on the road today are in need of some kind of repair or maintenance. Now, ask that same person why he hasn't taken his car in for care. The answer will probably be that he forgot or that he just didn't think about it. Most Walnut Creek residents seem to have a hard time remembering about scheduled maintenance for their vehicles.

Funny, because most of us in Walnut Creek have no trouble remembering to wash our clothes, mow our lawns or brush our teeth. It isn't that we can't remember to take our vehicles for service; it's a matter of making it a priority.

When it comes to our vehicles, Walnut Creek drivers like myself, need to be a little more maintenance-minded. The fact is, we can choose to do it, or we might find ourselves being compelled to do it.

For example, when we consistently forget to brush our teeth, a major consequence usually follows. The pain of that experience usually compels us to be more mindful of our teeth and take better care of them.

The same goes for our vehicles. If we ignore them long enough, a painful experience is sure to follow—painful for our pocketbooks, that is. People in Walnut Creek who have gone through that experience are usually more conscientious about proper car care.

So, if you're not a fan of the school of hard knocks, at least when it comes to vehicle maintenance, remind yourself to look after your car. Pay attention to the little oil change tag on your windshield. When it's time take your car in, do it. But don't just change the oil. Get a full-service oil change at Gilmore's Auto Service. Your technician will then check all of your fluids. He can advise you if any of them need to be changed or if any of them are low.

Low fluid levels can indicate leaks or a worn hose or seal, so they can check those for you as well. Other signs of wear are also immediately evident when you get a full-service oil change, such as a cracked serpentine belt or corroded battery cable. Your Gilmore's Auto Service technician will also check the vehicle manufacturer's service recommendations for your vehicle and advise you of any other routine service that is coming due.

It's like a one-stop shop for auto advice that will keep you on top of your vehicle's maintenance.

If there is more to be done than the budget allows, you can get a picture of what needs to be done.  Then, create a plan with your Gilmore's Auto Service service advisor and budget for it during the coming months. It's a whole lot less painful than unexpected car repairs.

Vehicles are more reliable than they ever have been. They can take a lot of abuse and neglect. But they're also expensive and complicated machines. Walnut Creek drivers can't expect them to run forever without proper fluids and filters. Preventive maintenance at Gilmore's Auto Service in Walnut Creek will improve the reliability and life expectancy of your vehicle, as well as ensuring your safety on the road in CA.

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