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.
Tuffy Tire & Auto Service Center Appleton
2940 E. College Ave.
Appleton, Wisconsin 54915
September 19, 2021
Recalls are pretty serious for Appleton residents and don't happen all that often. But sometimes cars have less serious problems that Appleton residents still might want to know about. For these less serious cases, the vehicle manufacturer issues what is known as a Technical Service Bulletin or ... More
September 12, 2021
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 pr... More
September 5, 2021
Rust. It's worse if you drive in places that use salt on the roads in winter, or if you spend time driving near a body of salt water. But any vehicle has to deal with rust after years on the road. And it's not just that rust can eat away your vehicle's body and fenders. It can be a real probl... More