Lets now discuss each of the listed problems in the previous post one after the other
After 4 or 5 years (regardless of mileage) most batteries are getting weak and need to be replaced. If you are lucky, your battery might go 5 to 6 years, but average battery life is still only about 4years. In hot climates 3years is about all the heat most batteries can take.
The water pump circulates coolant between the engine and radiator to keep the engine from overheating. By the time an original equipment water pump reaches 70,000 miles or more, the incidence of failure due to coolant leaks goes up sharply. If the pump has over 100,000 miles on it, you’re driving on borrowed time. The first sign of trouble is coolant seeping out of the vent hole or around the pump shaft. The loss of coolant will eventually cause the engine to overheat. Adding cooling system sealer to the radiator won’t help because these products can’t seal a leaky water pump. If the water pump is leaking, it needs to be replaced. .
The original equipment fuel pumps on domestically-built vehicles (e.g GM, Ford & Chrysler) tend to fail at any point from about 60,000 miles on (Note: fuel pumps in Asian makes typically last the life of the car!). One minute your driving along just fine, and the next you’re stranded because the fuel pump died. Fuel pumps often give no warning that they are about to fail. Some may buzz or cause hard starting, hesitation or stalling problems. But more typically, they just quit working. The fault may be something other than the pump (such as a bad electrical connection, faulty power relay or plugged fuel filter or line), so accurate fuel pump diagnosis is essential to avoid replacing a pump unnecessarily if the engine is not getting any fuel. Late model cars use electric fuel pumps that are usually located inside the fuel tank. That makes the pump difficult and expensive to replace.
The engine has a number of gaskets that can fail as time and mileage add up. Many General Motors(GM) V6 engines develop coolant leaks in the intake manifold gasket at around 60,000 to 70,000 miles. The loss of coolant causes the engine to overheat. The intake manifold gaskets for the GM V6 engines typically cost less than $60, but replacing them is a major job because you have to tear apart the top of the engine.
Rubber gaskets and seals tend to harden and shrink as they age. After 10 or 12 years, they usually start to leak no matter what you do. The only way to stop the leaks are to replace the old gaskets or seals.
Even worse is a head gasket failure. Many head gaskets will last the life of the engine. But after 60,000 to 70,000 miles, some head gaskets start to leak coolant or compression. This will cause the engine to overheat. Pressure testing the cooling system can verify the problem. Sometimes the leaking coolant will foul a spark plug. It can also dilute the oil in the crankcase. A leaky head gasket can sometimes be fixed by adding a cooling system sealer such as BARS LEAK or a similar product to the radiator. But you never know how long the sealer will hold. So the only real solution to this problem is to replace the head gasket.
Overhead cam engines that have rubber timing belts require the belt to be replaced after so many miles. On older engines, the interval is typically every 60,000 miles. On newer engines, the replacement interval is typically 100,000 miles. If the belt is never changed (which is often the case), it may suddenly break and fail. If the engine is an interference engine with tight clearances between the valves and pistons, this can bend intake valves.
This is one repair vehicle owners fear most, and rightly so. Nobody repairs transmissions anymore. They replace them with re-manufactured transmissions. A transmission job can easily cost thousands or more for parts and labor. The failure rate for automatic transmissions starts to go up around 60,000 to 70,000 miles, and becomes very likely once the odometer flips past the 100K mark. The transmission should last as long as the engine, but few do.
Manual transmissions will usually last the life of the vehicle, but the clutch usually does not. The life of the clutch depends a LOT on the driver. A person who rides the clutch or drives aggressively will burn up the clutch must faster than someone who does not. Many clutches need to be replaced by the time they have 70,000 to 100,000 miles on them. A driver who is hard on a clutch may kill his in 30,000 miles or less. Replacing a clutch requires a lot of labor because the transmission or trans axle must be removed to get at the clutch.
Brake Pads .
Brake pads are a wear item that eventually wear out and have to be replaced. The rate at which they wear depends on how often the brakes are applied, how hard the brakes are applied, and the weight and velocity of the vehicle. Somebody who rides the brakes, drives aggressively, spends a lot of time in stop-and-go city traffic, etc., will wear out their front brake pads much more quickly than a driver who stops gradually, or does a lot of open highway driving. A large, heavy full size SUV can eat up a set of front brake pads in 30,000 miles, while a smaller lighter economy car might go 60,000 to 70,000 miles before the front pads are worn down and need to be replaced. If only the pads need to be replaced, and you can change the pads yourself, a new set of pads cost few thousands of naira. .
Tires are a wear item that eventually wear out and have to be replaced. Most original equipment tires will go 60,000 to 80,000 miles. Cheaper quality replacement tires may only last 50,000 miles while higher priced tires may go upwards of 80,000 miles. Wheel misalignment and/or worn steering or suspension components can accelerate tire wear significantly.
WARNING! Tires age internally regardless of mileage, and may become dangerously weak. Tires that are more than 10 years old should be replaced regardless of how much thread is left on the tires. For more information about tire expiration dates, Click Here.
The exhaust system is exposed to water and corrosive acids, mainly from the inside out. Stainless steel pipes and mufflers will often last up to 10 years or more. But plain steel pipes and mufflers can rust through in as few as four or five years. A leaky exhaust system not only makes a lot of racket, but it can also leak dangerous carbon monoxide fumes. Repair costs will vary depending on what needs to be replaced. Seldom can you get buy with a new muffler alone. The pipes often need to be replaced, too.
Synthetic rubbers and elastomers are used for coolant hoses, vacuum hoses, fuel hoses, emissions hoses, brake hoses, seals, weatherstripping around doors and windows, the hood and trunk. Rubber typically hardens, shrinks and cracks with age. After 10 to 12 years of service, many original equipment hoses, seals and weatherstripping can start to leak. Keeping a vehicle in a garage will reduce the exposure to ultraviolet light and ozone which ages rubber, and may expend the life a few more years. But eventually, many rubber parts on well cared for garaged vehicles will deteriorate and fail.
Engine parts made out of plastic can also become brittle and crack with age. This includes plastic intake manifolds, valve covers and oil pans. Other plastics that deteriorate with age include plastic fuel tanks, and plastic facials, bumper covers, body and interior trim, and dash covers, and plastics used in upholstery.
Many may be thinking that because some of these problems may take years before it happen is a good reason for them not to fall victim of such, but forgetting the fact that a car that was not newly bought might have spent up to a decade some where before being sold. Most importantly calculating the repair cost of each of the listed problems is a serious concern that shows that maintenance and constant servicing as at when due is necessary.