Lesson 9: Common Starting System Problems

Learning objectives:

at the end of the lesson you must be able to:

Explain the possible causes of starting system failures using diagnostic logic.
Demonstrate a positive attitude toward diagnosing and solving starting system problems.

Usually, most drivers don’t have to think too much about how their car works. Each morning as they head out the door, all they have to do is turn the key (or push the start button), and they’re off for the day. However, if you’ve owned a car for very long, it won’t come as a surprise that every car needs some type of basic maintenance for the systems that keep it operating reliably, regardless of whether it’s new or old.

One important system that to think about is the starting system. If any of the components of this system have failed or malfunctioned, you will experience starting problems.

What are the most common engine starting problems, you wonder? Here are five issues that could cause starting problems:

Bad Ignition Switch – This problem is typically indicated by trouble turning the key, flickering dash lights when you turn the key, or if the car doesn’t do anything at all when you turn the key.

Failed Starter – A failed starter will often make a loud single click, or a series of clicks when the key is turned in the ignition. The starter may be trying to move, but cannot actually engage with the flywheel to spin the motor.

Faulty Alternator – The alternator is responsible for creating a spark in the engine as well as charging the vehicle's battery while the car is running. If the alternator fails, the battery takes overpowering the accessories and will eventually be drained of all its charge.

Fuel System Problems – Fuel system problems, such as a clogged fuel filter, bad fuel pump, or dirty fuel injectors, can cause rough idling, loss of power, or a car that won’t start at all.

Dead Car Battery – The battery is responsible for providing the initial electricity necessary to start the car. It will die if accessories or lights are left on without the engine running, if it has become weak and can’t hold a charge, or if the alternator has failed.

What is the key to avoiding costly automotive repair? The answer is fairly obvious—keep up with basic automotive service at the appropriate mileage and time intervals. You will be helping your vehicle keep operating efficiently for as long as possible.

How do you do this, you ask? First of all, regular inspections (possibly at every oil change), have your mechanic check your vehicle’s operating systems and components. They will be able to advise you if there are any potential problems in addition to normal wear and tear that should be taken care of immediately, or if there are some issues that can wait a while. Taking care of small problems will prevent them from turning into bigger and more costly automotive repairs later on.

Your mechanic should include the following issues during an inspection of your vehicle:

Condition of the brakes

No-Start or hard-starting problems

Shifting problems, such as jerking, slipping, or hard shift

Suspension system—the condition of the shocks, struts, and axles

Engine performance—such as stalling, rough idling, lack of power, or overheating

Strange Noises—unusual noises that you haven’t heard before, such as rattling, growling, or screeching sounds

Warning Lights—service reminders and warnings signs illuminate the instrument panel

Worn out tires causing wobbling and drifting down the road or sliding around corners

With today’s advanced technology, most of today’s vehicles are equipped with an “On-Board Diagnostics System” (or OBD), which continuously compiles data from your car’s sensors. If a sensor detects a problem, the “Check Engine” light is triggered to illuminate. When you see this light come on, head to your auto shop for a diagnostic test. This test will “read” the codes and help your mechanic determine the cause of a problem and perform the appropriate automotive repair.

Tip to Remember: Quality automotive service performed on a timely basis is time and money well-spent to ensure you are driving a safe and reliable vehicle!

SUMMARY oF THE TOPIC

Common starting system problems can prevent the engine from cranking or starting properly. One frequent issue is a dead or weak battery, which fails to supply enough power to the starter motor. Corroded or loose battery terminals and cables can also cause poor electrical flow. A faulty starter motor or solenoid may result in clicking sounds or no response when turning the key. Worn-out ignition switches or defective starter relays can interrupt the signal needed to activate the starter. In automatic vehicles, a faulty neutral safety switch might prevent starting if the gear selector isn’t in “Park” or “Neutral.” Additionally, damaged wiring, blown fuses, or poor ground connections can disrupt the entire starting circuit. Diagnosing these issues typically involves checking each component systematically to identify the root cause.

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