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How does your car sound?

03.31.2009 · Posted in Business News Article

Weird noises coming from your car can help you determine needed repairs. It’s important that you listen to what your car is trying to tell you.nnAlthough many people still use the old broomstick-held-to-the-ear method of zeroing in on noises, the best method these days is a stethoscope. Indispensable in finding the source of a sound, it’s also a lot easier to place it where you want it than the clunky end of a broomstick.nnHere are certain clues to what your car’s noises might mean:nnBang – this starling sound just like a gunshot means you’re dealing with the dreaded backfire. You’ll probably be able to trace this to something that’s causing a rich air/fuel mixture.nnAnother possibility is a clogged monolithic converter blowing through. This will only occur once and will be accompanied by an amazing increase in power. If your car has air injection, perhaps the diverter valve is not functioning.nnBoom – a hollow, low-frequency sound/sensation, this makes you feel as if you’re riding inside a metal drum and the atmospheric pressure is rapidly changing between positive and negative.nnOn rear wheel-drive cars, check out the driveshaft and its u-joints because if it’s spinning out-of-true, it will cause waves that push up on the floor of your car.nnBuzz – an annoying “bzzzzzzzzz” sound, like a trapped insect, can usually be traced to the poor positioning of interior trim parts. Have somebody else drive while you press, pry and pound on every likely spot.nnChirp – it sounds like birds are nesting under your hood. You can probably blame a maladjusted or misaligned belt, but don’t ignore the idler pulley. Or it could just be your tires when you hit second gear.nnClang or clank – This sound couldn’t possibly be emitted by light, flimsy parts. It’s coming from a heavy, essential component, such as a set of gears. A good example is the sound a bad rear axle pinion bearing makes when you drop the transmission into Drive, then Reverse.nnHiss – If it’s continuous and changes with rpms, it may be normal belt noise. Otherwise, a slow leak in the cooling system is likely. A black light will help you find this.nnHum – We don’t mean what the radio does between stations, but the noise a differential or wheel bearing makes. If it responds to acceleration/deceleration, suspect the differential. Then look into the bearings. Unfortunately, it’s often very difficult to tell which side (or even which end) the hum’s coming from.nnFor quick and affordable repairs, visit Auto Repair Service Lorain where the service is good and the price is even better.

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