Skip the auto shop - Our mechanics make house calls

Q: power or electronical

asked by on

power and charging problems. it will crank but it loses its power. is it an electrical or is it the alternator?
My car has an automatic transmission.

A: The alternators job is to keep the battery ...

The alternators job is to keep the battery in your Jeep charged while everything else runs off of your battery power. If the Jeep cranks but does not start, the problem is going to be a lack of fuel and or spark.

There are many variables on what will cause your engine to not start. Jeeps are common to have the Auto Shut Down (ASD) relay go bad and it is fairly easy to locate with your owners manual. Once located, you can have a friend turn the key to the #2 position (do not attempt to start) while you hold your finger on the relay itself.You should feel it click. If you don’t, try replacing the relay and attempt starting your Jeep again.

It is also possible the battery itself is the culprit. Here’s how to check your battery if you’re comfortable under the hood of your Jeep. If the problem is more than a battery or relay, it may be time to enlist the assistance of a certified technician to come by and diagnose why your Jeep isn’t starting and assist you with the repairs needed to get your jeep driving again.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: White smoke from exhaust smell like gas 1997 Ford F150

Hi there - check for problem codes first, whether the Check Engine light is on or not. I don't think it's a computer problem - more likely a coolant temperature sensor malfunction or leaking injector making it run rich. Check...

Q: Battery light and power steering

The power steering pump and the alternator which charges the battery are driven off of the same serpentine belt. Therefore, the first thing to check is the condition of that belt and whether belt tension is adequate. If there is...

Q: Key spinning freely in the ignition

It sounds like your ignition switch has broken. This switch has the detents in it that give you the different positions that the key goes through (e.g., Off, Accessory, On, Crank). This switch breaking explains why your key would be...

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...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...