![]() Located in Spring, Texas, Das European Autohaus is TX’s premier European automotive repair shop. The best way to avoid these noises with the heat shield is to get the part replaced as soon as you notice a sound.Īnother thing you can do to prevent any of these problems is simply take your Mercedes for regular oil changes and checkups to catch any issues before they wreak havoc on your car. As they rust, they can make loud rattling noises. However, these thin metal pieces are subject to corrosion and rust over time. Heat Shield RattlingĪs part of the exhaust system in your Mercedes, the heat shield stops extremely hot exhaust temperatures from impacting other parts of your engine. This problem, when left unchecked, can lead to a complete engine replacement or rebuild, which can be extremely expensive. The engine makes a rattling sound because the oil is much thinner than it needs to be and doesn’t coat your engine’s parts as well as it should. Getting regular oil changes is the best way to prevent this problem. Low oil pressure is usually caused by a lack of regular maintenance on your Mercedes. When left unchecked, this problem can get bad quickly. As this problem worsens, a lower oil pressure stops parts of your engine from being properly lubricated and protected from each other. If you’re hearing an engine ticking noise, it could indicate low oil pressure in your engine. This is best resolved by a professional who knows the intricacies of your Mercedes. This happens when fuel ignites prior to the spark plug firing off because of excessive heat along with a number of other problems. If you notice a pinging noise coming from your engine, it should be caused by detonation of the engine. It can also cause your Mercedes to fail an emissions test in some states. If you ignore this problem, the catalytic converter will cause performance issues. However, when this system starts breaking down, small chunks of the honeycomb core break off and move around, producing a rattling noise. The catalytic converter helps to control emissions in your exhaust system. When hearing a clattering metal noise while idling, the problem could be with your catalytic converter. If you’re hearing an engine rattling noise while idling, the problem is likely not actually with your engine itself. It can cost around $500-$1500 to replace the belt tensioner, so it’s best to bring your car into a shop sooner rather than later with this problem. The good thing about this problem is that it’ll be easy to notice, as an issue with the belt tensioner will make a loud noise to let you know something is wrong. This can cause a rattling engine while accelerating as well as engine clicking noises. If the chain tensioner or timing belt inside your car’s engine loses strength, it will have more movement than is necessary for function. If your engine rattles while idling, it could mean a totally different issue than if it rattles while accelerating. This is never a good sign and can indicate a number of problems. If you drive a Mercedes, you expect the best from your vehicle, but one problem that you can encounter while driving a Mercedes is a rattling engine. Mercedes-Benz is a highly respected brand name among car enthusiasts and ordinary drivers alike.
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