You can buy these at nearly any auto supply store, and most hardware stores. You will also need an appropriate sized wrench with which to remove the battery terminals. Important: Always disconnect the negative (-) battery terminal first, and reconnect it last. This will help to keep from shorting the battery while connecting or disconnecting the terminals and possibly causing damage andor personal injury.
Car Battery Lifespan and What Causes Batteries to Fail. The average life expectancy of a car battery is three years or so, but there are several factors that can have an impact on that estimate. Even under the most ideal conditions, chemical reactions cause batteries to break down, and your vehicle will likely need a new battery within a few years. Though car battery problems are often associated with cold weather, Consumer Reports magazine says heat is a bigger enemy of car batteries and will take a bigger toll on performance and reserve capacity.
If your vehicle does not use an automatic tensioning device, then check belt tension as follows: With the engine turned off, grasp the belt at a convenient point about 8 to 10 inches from the alternator pulley. Move the belt slowly up and down. The belt should not move more than about 12 inch. If the belt seems to be excessively loose, then of course it will require tightening andor replacement.
Engine deposits caused by low-quality or contaminated gasoline create drivability problems, and the cure for that might be a fuel system cleaning, either by a repair shop or with a gas-tank additive. An illuminated check engine light signals when something is amiss in the emissions control system, but depending on what the issue is it could also affect fuel economy or engine performance, so don’t ignore it. A faulty oxygen sensor, for example, leaves the engine computer in the dark about how to set the air-fuel mixture, and that can result in poor fuel economy.