The Car Has No Electrical Power At All, What To Do?

If you are driving your vehicle and suddenly your car has no electrical power at all i.e. all of your electrical devices stop functioning. It means power isn’t getting through. If your engine stops as well, then the ignition system is also not receiving the power it needs to function.

What Are The Reasons Behind The Car Has No Electrical Power At All Issue?

Possible causes of a power failure could be either bad battery connections, a bad ignition switch, or a bad alternator. Here are some common causes of your car is losing electrical power:

1. Bad Battery Connections:-

If you are losing power, the first thing that you should check is your battery connections. If your connections are loose, then it will affect the flow of electricity so that less power is going to the electrical systems of your vehicle.

2. Faulty Ignition Switch:-

Your ignition switch provides power to your engine as well as to other accessories in your vehicle like your headlights, radio, power windows, power locks, and interior lights. If your ignition switch fails, you might notice the following happen:

1. Engine stalls while driving.

2. Engine starts then immediately stalls.

3. Bad Alternator:-

If your car has no power, it may be a sign that your alternator is beginning to wear out. If your alternator stops functioning, your vehicle relies solely on the battery to power its electrical system. Once your battery runs out, everything in your vehicle will shut down. Here are some signs indicating that your alternator is failing:

1. A warning light on your dashboard comes on.

2. The lights start to go dim or start to flicker.

3. Battery is dead.

4. Growling or whining noise.

5. You might notice a strange smell like burning rubber or the smell of an electrical fire.

4. Faulty Fuel Filter:-

The fuel filter has the responsibility of filtering the fuel before it goes into the engine. If the fuel filter gets clogged and the fuel does not reach the engine chamber in the right quantity then the engine will not be able to perform at its optimum level. You will feel a loss in power while accelerating and at times intermittent jerks.

5. Clogged Air Filter:-

An engine needs clean air to function properly. If dust and other particles enter the combustion chamber the engine can get damaged. Due to this, you are bound to notice a loss in your car’s performance.

6. Clogged Exhaust System:-

The exhaust removes all the harmful and unnecessary gases from the engine. The sooner the exhaust excretes these gases the sooner the engine can restart combustion and the more power your car’s engine can make. However, if there is any sort of obstacle in the way like a restricting cat-converter or a clogged exhaust then your engine loses power.

7. Weak Fuel Pump:-

The fuel pump delivers fuel from the fuel tank to the engine. The fuel pump has to be powerful enough to be able to send the fuel at high pressure. If the pressure is low the fuel injectors will not be able to spray the correct amount of fuel into the combustion chamber and that will result in a loss of power.

8. MAF Sensor Malfunction:-

The Mass Airflow Sensor (MAF) measures the amount of air the car needs to accelerate. Once it gets that measurement it sends this information to the ECU which notifies the throttle to open accordingly. If the MAF is faulty and not measuring the airflow properly then you could experience a serious loss in power.

Therefore, these are some causes behind your car has no electrical power at all.

How To Fix The Issue Car Losing The Electrical Power?

Sometimes this can just be a temporary failure and the vehicle will all of a sudden begin to work again.

Step 1:-

You need to examine both the positive and negative cable connections to make sure that they are tight. If they are loose, then tighten them.

Step 2:-

If you see any signs of corrosion, then you should clean the terminals and cable ends before you tighten them up. To clean the terminals, use an old toothbrush dipped in baking soda and vigorously scrub them.

Step 3:-

It’s also a good idea to follow the cables to make sure that they are tight at the other end as well. If they are loose, you should also tighten them. If you’re unable to check the battery cables take the reference of the above-mentioned video.

Step 4:-

Checking your ignition switch is more complicated than checking your battery cables. If you are unsure of how to do this, then it is a good idea to take your vehicle to an auto repair shop that you trust. If the ignition switch is damaged then it will need to be replaced.

Step 5:-

It isn’t easy to test your alternator at home and it is best to take it to a professional.

Step 6:-

To solve this issue find the fuel filter located in the engine bay or near the fuel tank in your car’s trunk. If the fuel filter is clogged replace it.

Step 7:-

The air filter cleanses the air of dust and other harmful particles, depending on driving conditions. You need to replace this filter as soon as possible if it’s at fault.

Step 8:-

Sensors can get worn out due to heat and dust. Regularly cleaning them with a specialized product can help improve their function and in turn the efficiency of the engine.

Step 9:-

A malfunctioning oxygen sensor will cause the engine to burn a rich a/f mixture hurting your fuel economy in the process. Fortunately, sensors are pretty cheap and easy to replace.

Hence, if you have followed all the steps properly and if you’re unable to solve the issue of your car has no electrical power at all, it’s better to take the help of the professionals.


We hope the above-mentioned information about the issue of your car has no electrical power at all will be helpful to all the readers. If anybody’s doubts persist feel free to comment in the comment section below. We’ll try to solve your doubts as soon as possible.

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