Q: I just had the alternator replaced, but my car cuts off while driving.

asked by on January 19, 2016

I just had the alternator replaced, but my car cuts off while driving.

Battery is dead Inspection $79.99 - $89.99 Get a Quote
Car is stalling Inspection $79.99 - $89.99 Get a Quote

If your vehicle is losing battery voltage (i.e. your battery light is on) the problem may be your battery. You have a new alternator, so if your battery is bad, it won’t hold the charge from the alternator. The problem could still be a defective alternator or improper installation. A fuse could also be the cause. If you still have power (headlights still work) the problem is in the fuel or ignition system. Your vehicle has a very complex ignition system and should only be serviced by trained professionals. Have a mechanic inspect your vehicle and diagnose your problem for you.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

What others are asking

Codes P0121, P0221, P2101, P2104, P2110, P2111

Here are the codes, what they mean and the potential causes below each of them. Note that some of them may be related and can cause additional codes to be triggered that may be fixed when one of it's related...

What could be cause my car not to move when I put it in gear?

I think your transmission has failed internally. You may need to have it towed to a transmission mechanic for a transmission replacement or rebuild. If you would like to have one of our technicians give you a second opinion in...

My Acura TSX started to jerk while I was at a full stop. Not much longer my engine light started flashing any tips or ideas? 2005 Acura TSX

Hello - the first task is to get the problem codes that are turning on the Check Engine light. This information will have the most direct bearing on what's causing the problem. Most auto parts stores will read the codes...

Getting fuel, spark, compression, air still no start

Hello, thank you for writing in. Considering you have taken on a lot of the main components all at once, you should take a moment to go back through the entire project thus far to make sure everything was done...

What does the master Warning Light mean?

The master Warning Light is located on the instrument panel. This light will illuminate to accompany many of the warning lights. If you notice that the master Warning Light is lit, check to see which other warning lights are also...

When first starting the car for the day, it wants to bog down intermittently only at idol. it never dies but

It may be time for a tune-up and cleaning of the induction system. Carbon build up around the throttle plate or worn spark plugs may cause the engine to run a little rough, especially on a cold start. Consider hiring...

Why do I constantly need to replace the brake rotors and brake pads?

Hi there. That's a really good question. What reason were you given that the rotors need replacing? What symptoms are you experiencing? If you have a brake vibration, the rotors should have enough thickness after a year, unless you drive...

Rattling noise when idling

The clutch release bearing is the most likely cause of this noise. If so, then the transmission would need to be removed to service it. I recommend having a mechanic, such as one from YourMechanic, come to you and run...

Dash lights along with fog lights and ceiling lights don't work

Hello, thank you for writing in. It is impossible to tell what kind of repair bills you are looking at without knowing what is actually wrong. Diagnostics are going to start with checking the fuses, and finding out what those...

Related articles

A Buyer’s Guide to the 2012 Nissan GT-R
Sporty, Sporty, fast, aggressive – all those words apply to the 2012 Nissan GT-R. This track-inspired car manages to bring racecar-like performance to the street, and it does so in true Nissan style. Key Features It’s tough to choose...
Top 10 Best-Selling Cars of 2016
Ford F-series pickup trucks, Toyota Camry, and Honda Civic are some of the best-selling cars of 2016 and all deliver on reliability and efficiency.
2005 Jeep Wrangler vs. 2005 Chevrolet Blazer: Which One Should I Buy?
Sport SUVs are a class all of their own; these vehicles are meant for a fun drive through the woods and across the trail – but not necessarily to Grandma’s house! Think instead about going through the creek and through...