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How to get rid of tailgaters

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44 The Know-it-all’s Guide <strong>to</strong> Life<br />

Electrical system<br />

Your mechanic should test the electrical system with a diagnostic machine<br />

that will indicate if there is a problem with the starter, alterna<strong>to</strong>r, or<br />

battery. When you test drive the car, look closely at the dashboard <strong>to</strong> make<br />

sure no warning lights stay on. Airbags are particularly costly <strong>to</strong> repair.<br />

Engine cooling system<br />

If the engine is completely cold, take a look at the cooling system by<br />

unscrewing the radia<strong>to</strong>r cap and siphoning <strong>of</strong>f a little fluid with an antifreeze<br />

tester. Coolant should be translucent yellow or green; if it’s murky<br />

or dirty, chances are the radia<strong>to</strong>r has some corrosion. Your mechanic can<br />

check out the cooling system by pressure testing the radia<strong>to</strong>r <strong>to</strong> spot any<br />

leaks that could leave you stranded later.<br />

Intake and exhaust<br />

Sensors in the engine and exhaust system have a finite life and should<br />

be checked by your mechanic. The majority <strong>of</strong> states have manda<strong>to</strong>ry emissions<br />

tests; bad sensors, catalytic converters, and loose tail pipes will have<br />

<strong>to</strong> be fixed before you take the car <strong>to</strong> be tested.<br />

Frame and suspension<br />

The suspension system, frame, and front wheel bearings should all be<br />

examined <strong>to</strong> ensure that the car is safe <strong>to</strong> drive. Examine the exterior<br />

carefully for signs <strong>of</strong> accident damage. Look for imperfections in the finish<br />

indicating it has been repainted. Also look inside the trunk and make<br />

sure the color matches the body. Another way <strong>to</strong> locate bodywork is with a<br />

magnet, which won’t work in areas that have been patched with epoxy<br />

resin (a.k.a. Bondo). If the doors, trunk, or hood do not open and close<br />

smoothly, there is a good chance the car was previously wrecked. Never<br />

look over a car in the rain—water can hide surface imperfections.<br />

Manufacturers’ certified pre-owned programs provide a margin <strong>of</strong> comfort.<br />

Vehicles in these programs generally have lower mileage, are in better<br />

shape, and have been given a thorough going-over by the dealer before<br />

being <strong>of</strong>fered for sale. Pre-owned certifications typically feature extended<br />

fac<strong>to</strong>ry warranties as well. You pay for the added assurance, though; certified<br />

used cars cost from $500 <strong>to</strong> $1,200 more on average. Another good<br />

source for used cars is rental car companies. There is a reason why the national<br />

rental car firms always have new cars: Cars in their fleets are sold when<br />

they accumulate <strong>to</strong>o many miles. Although rental cars can be abused, they<br />

are generally well-maintained and have complete service records. They <strong>of</strong>ten<br />

have time left on their manufacturers’ warranties as well.

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