Express Car Care of Denver

"Denver's Best Auto Repair and Quick Lube"

Archives for June 2011

Check Engine Lights

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A question we often hear at our shop is “why is my check engine light flashing?”  There is not always a simple and quick answer to this question.

Check engine lights are a part of the computerized engine management system (ECM).  This system alerts us to possible problems inside the engine or transmission that have an impact on the emissions system.  Check engine lights may be a graphic of an engine or a similar icon.  It could also be words “check engine” or “service engine”.  Some vehicles use a yellow check engine light as a caution light that tells you to have your car checked soon and a red check engine light that means your vehicle needs immediate attention.  Every car’s display is different, so you should make yourself familiar with how your particular make and model works.  The check engine light is usually amber or red in color and has two stages, a steady engine light or a flashing check engine light.  A steady check engine light signals minor problems, while a flashing check engine light means there is a serious problem in the ECM.

The specific causes a check engine light flashes are different for each vehicle but these are some general causes.

  • A misfire in your engine.  A misfire can cause catalytic converter damage if you don’t resolve it quickly.  Replacing a catalytic  converter can be costly, so have the engine checked as soon as possible by a certified mechanic.
  • A failure in the emission control system.  The emission control system contains many active sensors that work to reduce the amount of pollution released into the air.  One of those sensors is an oxygen sensor that reads the air and fuel mixture.  If that mixture is out of the acceptable range the check engine light will flash.
  • Brittle, cracked or worn spark plugs.  Worn spark plug wires can lead to an electric misfire inside the engine.  If the wires are worn out, they should be changed as soon as possible.
  • A loose gas cap.  If the gas cap isn’t tight enough or twisted correctly it can cause the check engine light to flash.  Sometimes when the cap is put on correctly the check engine light will go off.  If the light stays on for more than a day or two have your mechanic run an on-board diagnostic to see if there is a code in the system indicating a more serious problem.

Check engine lights help you and your mechanic keep your vehicle running smoothly, so when they light up have your vehicle checked and don’t ignore them!

For all of your Denver Auto Repair needs, trust Express Car Care. Call (303) 691-2760 or stop by our shop today.

Car Air Conditioning and Allergies

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If you suffer at all with seasonal allergies or asthma, you are more than likely very serious about trying to prevent triggering their symptoms.  You have probably followed all the recommended guidelines for reducing the risk of triggering your allergies.  You keep your windows and outside doors closed as much as possible.  You use air-conditioning to cool your home and avoid using window and attic fans during pollen season.  You avoid being outdoors in the early morning when the pollen is more prevalent and you keep your car windows rolled up and use your car air conditioning when driving.  But each time you enter your car and turn on the air conditioning, something very unpleasant happens.  Your eyes start to water and your nose starts running, then you begin to sneeze while your throat starts itching.  What is happening?!

Common allergens and irritants found inside the average car can make driving a real challenge for people who suffer with allergies.  Dust mites and mold can grow in cars and linger for long periods of time.  A car air conditioner doesn’t harbor mold because it is a sealed unit that outside air can’t penetrate.  But mold can grow in your air conditioner’s vents and the hoses that connect it.  This happens when moisture becomes trapped and can’t escape through the venting, like the  showers in our homes.  Mold loves humidity and thrives in moist conditions.  To help prevent mold in your car’s air conditioning vents, here are some steps to try.  As you near your destination, after running your air conditioning, switch your air conditioning system off and turn on the vent.  Do this at least two miles from your destination.  Turn the vent on high so there is a lot of air blowing through the vents.  The air won’t be as cool as it is when the air conditioning is on but it will dry out any moisture that might be trapped in your vents.  If you do this each time you use your air conditioning it will help prevent mold and pollens from accumulating and triggering your allergies.

If you practice these guidelines and still notice allergy problems when you are in your car, we offer a service here at Express Car Care, that can clean your car air conditioning so you can enjoy driving again.  Ask one of our service technicians for more information.

For all of your Denver Auto Repair needs, trust Express Car Care. Call (303) 691-2760 or stop by our shop today.

Differential Service

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Summer has arrived and for many of us that means we will be spending a lot of time in our cars.  We drive to sporting events, concerts, camping and fishing trips,  and some of us head to the mountains for a little off-roading!  But no matter how you spend your summer, you want your car to get you where you want to go!  To help you make that happen, we suggest you have your vehicle checked to  see if it’s  in need of a differential service.

Whether your vehicle is a front-wheel drive, rear-wheel drive, or four-wheel drive, it has a differential, maybe even two or three.  The differential is a special gear box located between the drive wheels of your car.  The differential allows the wheels to turn at different speeds while still providing power.  Without a differential, our tires would rub and hop along the pavement, instead of gliding smoothly during turns.  Rear wheel drive vehicles have a differential in back.  The majority of four-wheel drive trucks and SUVs will also have a similar differential on the front axle. But no matter where they are located, all of the engine’s power is routed through your car’s differentials.  In order to perform their purpose, they need to be properly lubricated.  You can accomplish this by having a differential service done regularly on your vehicle.

A differential service is simply having the used fluid drained and replacing it with clean fluid.  Neglecting to change the differential fluid can cause poor performance, premature wear, noise and even failure.  Replacing a differential assembly can cost as much as $1500, so don’t let that happen to you.

The benefits of having a differential service are numerous.  It removes metal shavings and other contaminants that naturally enter the differential during normal operation.  A differential service reduces heat levels inside the differential and protects against friction, rust and corrosion.  It extends the life of your differential and provides protection especially under extreme conditions.   To keep the expensive metal parts of your vehicle protected, it’s important to have the differential fluid checked and changed at recommended intervals.

The mileage interval for servicing your differential can vary according to the type of vehicle you drive, and how and where you drive it.  Check with your service adviser or your owner’s manual for recommendations.

For all of your Denver Auto Repair needs, trust Express Car Care. Call (303) 691-2760 or stop by our shop today.

Replacing Shocks and Struts

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If you visit any auto repair shop regularly there is a good chance you’ve seen ads for replacing shocks and struts.  But is there a way to tell if your shocks and struts need replacing without taking your car to a repair shop? 

One way to evaluate if they need replacing is to look for damage or leaking.  Leaking is easy to see – just look for oil or wetness on the outside of the shock or strut.  Damage is also fairly easy to see – look for a broken mount, or dented housing.

Another way to evaluate your need for new shocks or struts is to consider how your vehicle has been handling and riding.  When you drive on rough roads or hit a bump, does it bounce excessively?  Does the nose dip down when braking?  Does the body roll or sway too much when cornering or driving in crosswinds?  Is it easy to bottom out the suspension when backing out of the driveway or when you’re  hauling extra passengers or cargo?

Because the damping characteristics of shocks and struts deteriorate gradually over time, the decline in ride control often passes unnoticed.  When you begin to notice the signs,  it’s usually way past the point when your shocks or struts need replacing.

Shocks and struts do not require replacing at specific mileage intervals like filters or spark plugs, but they do wear out and eventually need to be replaced.  Monroe engineers, America’s leading brand of shocks and struts, suggest following a 50,000-mile replacement plan just to be safe.  Driving on worn out shocks can be a hazard over time.  Worn out shocks and struts may cause your stopping distance to increase, especially on rough surfaces.  They can have a negative impact on your driving capabilities, especially in adverse conditions.  Worn out shocks and struts can also cause damage to your tires prematurely, meaning you’ll have more expense than is truly necessary.

Express Care is a family owned auto repair shop in the Denver, Colorado area that offers a variety of services, including shock replacement.  Conveniently located at Evans and I-25, we look forward to doing business with you.

For all of your Denver Auto Repair needs, trust Express Car Care. Call (303) 691-2760 or stop by our shop today.

Brakes Service

Oil Change

Suspension

Transmision Service

Engine Service

Auto Tips & Tricks