Skip the auto shop - Our mechanics make house calls

Q: Vehicle has no power.

asked by on

I started the truck the yesterday and had it running but today it has no power at all. I have tried several batteries, alternators, and starters yet nothing allows it any power. The lights or radio neither one will com on either.
My car has an automatic transmission.

A: Hi there. If the battery is fine but there ...

Hi there. If the battery is fine but there is no power to the vehicle, then you have a short or open in the wiring someplace. Most of the time it is a problem at the fuse box under the hood. The fuse box tends to either have a blown main fuse or an internal all short. I usually start by checking the voltage at the positive side of the battery working my way to the starter and to the fuse box to see if there are any failures.

I also check the negative cable for good ground connections. At this point I would usually see where the voltage is lost. If there is power at the fuse box and yet nothing coming on, then the fuse box may be bad. If you are planning on having this repaired, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair your vehicle's loss of power and let you know what needs to be repaired.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: How do I personalize the power door locks settings?

You can customize many of your vehicle’s settings using the vehicle personalization system. One of the areas of the vehicle that you can customize is the power door locks. When personalizing the power door locks you can change which doors...

Q: Tail light out and rear blinker

Hello. You may be facing more than one issue at the same time, due to all of these being related to a different system. One of the only components that can effect all of these systems is the ground connections....

Q: Our 1995 Isuzu Rodeo has black smoke from the tail pipe and it is chugging and we think it is the oxygen sensors. Could it be something else?

Hi there. There could be an issue with the fuel injectors, fuel pressure regulator, or the spark plugs. Check the spark plugs and see if they are wet with fuel. Black smoke is a sign of excessive burning fuel. Check...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...