AUTONET TV

The Sign of the Shield (Heat Shield Repair and Replacement)

Even in the months where temperatures are cooler, heat is still an enemy of your vehicle.  When your engine runs, it creates heat, so there are numerous heat shields that protect other parts from those higher temperatures. Heat shields are installed around several areas of the exhaust system.  Others prevent heat from reaching parts of the vehicle.  Still others prevent heat from reaching the ground (or maybe grass underneath) and starting a fire. 

If you remember your space travel history, you'll know how important a heat shield can be. John Glenn was the first American to orbit the earth, but during that maiden orbital flight, a sensor on board was indicating the heat shield on his capsule, Friendship 7, was loose.  If it had come off, his spacecraft could have burned up upon re-entry.  Fortunately, the heat shield stayed on, and Glenn made history.

Unfortunately, the heat shields on your vehicle don't have warning systems like the space vehicles did.  So you have to maintain them.  Heat shields are constantly exposed to elements like water, salt, sand and dirt.  That makes them prone to rusting and corroding.  Here's one unfortunate fact: Materials that make them good at preventing heat transmission also are soft and vulnerable, often aluminum or special fabric. 

One sign a heat shield will give you that it's loose is noise; you'll sometimes hear it rattling underneath your vehicle when it's running. One way to locate it? Put your vehicle in park, leave the engine running and take a listen outside.  It's usually pretty easy to pinpoint the location.

Make a note of the noise when you are talking with your service advisor. It's important to have those heat shields working correctly so the heat is kept away from your other vehicle systems and combustibles on the ground. The good news is that heat shields can frequently be inexpensively repaired or re-attached.  In other cases, they should be replaced. 

Missing or loose heat shields? Let's just say they're not cool.

American Brake Centers Inc.
3435 Bashford Ave Ct.
Louisville, KY 40218
502-459-0355
http://www.americanbrakecenters.biz

Beware of Potholes! (Avoiding Pothole Damage)

You may live in a region where roads become pockmarked with craters known better as potholes.  They're caused by moisture seeping through a compromised road surface that can freeze, expand and literally punch holes in the road.  And when your vehicle hits one of those holes that's big enough, the impact can flatten a tire, bend a wheel or tear apart a suspension component. 

To minimize pothole damage, leave enough room between you and the vehicle in front of you so you can see the road surface and any upcoming potholes.  That way you'll have time to slow down and steer around them.  Also, if you see what looks like a puddle of water, it may be hiding a pothole underneath, so treat it as if was a pothole.

If you keep your tires inflated to the manufacturer's specifications, they're more likely to withstand hard impacts.  And the slower you're going when you hit a pothole, the less likely you are to break something.   But if you do find you've hit a pothole pretty hard, here are some signs to watch out that could signal damage.

• Your vehicle pulls to one side
• The steering wheel shakes
• You hear noises or clunks coming from your suspension
• Your steering wheel is not centered when you are going straight

These are all symptoms you should have checked at your vehicle repair facility as soon as you can. The longer you wait, the more damage you may be doing.

You also may find after hitting a pothole hard that the tire on that wheel is flat. Try not to drive any more on that tire since you could do a lot more damage to the tire and/or wheel. A call to roadside assistance may save you money in the long run by limiting the damage to what's already done.

American Brake Centers Inc.
3435 Bashford Ave Ct.
Louisville, KY 40218
502-459-0355
http://www.americanbrakecenters.biz

Cool Running (Water Pump)

Your vehicle is like you in a way.  When it gets hot, it needs to be cooled down.  And one of the key parts to keeping it cool is the water pump.

Now, that's a bit of a misnomer.  It IS a pump, but it's pumping coolant, not pure water.  Cooling off your engine is vital since it builds up heat when it creates power by burning fuel.  Your water pump acts as a way to recirculate that coolant.  It goes through a series of tubes and hoses through the engine where it picks up heat, then is sent off to the radiator to get rid of that heat.  Cooled off, the coolant is recycled through the water pump to start the journey again.

The water pump works by taking mechanical power from the engine, usually from a belt.  Obviously, that belt has to be in good condition and adjusted properly or else the water pump won't be able to do its job.

Here are some things to look for that will signal problems with your water pump.  If your heat gauge is erratic or showing a much higher than normal temperature, that could be a sign of trouble.  Another is if you hear a whine under the hood.  And if that gets louder when you go faster, get it checked right away.  You may see steam coming out from under the hood or coolant may be leaking. 

These signs signal that it's time for you to have a technician check to see where the problem is. Some water pumps are powered by a timing belt.  If your vehicle has that design and your timing belt is due for replacement, sometimes it's a good idea to replace the water pump too, even if it's working properly.  That's because the labor to replace the timing belt can be expensive and it may be wise to proactively take care of the water pump while it's disassembled.

Your service advisor will explain the options available and offer the best path to keeping your water pump doing its job.  Your engine's life depends on it.

American Brake Centers Inc.
3435 Bashford Ave Ct.
Louisville, KY 40218
502-459-0355
http://www.americanbrakecenters.biz