Q: My engine keeps shutting off what is the problem?

asked by on November 26, 2016

My engine keeps shutting off while the car is on, the car also bucks or jerks forward when I put it in drive , the car needed a jumpstart this morning but when I got the battery tested they said it was ok , do you know what's wrong with it

My car has 18567 miles.
My car has an automatic transmission.

Hello. Your symptoms lead me to believe there is an issue with the charging system. If the battery is dead when the vehicle stalls, it means it is either not holding a charge, or the alternator is not generating energy for it. Remove the alternator and take it in to have it tested at an auto parts store. You can also test it at home with a voltmeter. With the meter set to DC, put the red lead on the positive battery terminal and the black lead on the negative terminal. If the battery is being charged by the alternator the voltage reading should be between 13-14 volts. Any lower and the battery is being drained faster than its being charged. Any higher readings means the alternator is putting out excessive energy, and may be damaging the other electronics in the vehicle. Test the alternator and connections first before looking into any type of engine problem.

Was this answer helpful?
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

Get a quote

What others are asking

Car shuts off when stopped or going slow

There are many reasons why a vehicle may stall at a stop or at low RPM. I would recommend having your vehicle's stalling issue inspected at by a knowledgable technician, such as one from YourMechanic, to determine the exact nature...

Trouble accelerating

The boots may of not been installed correctly and/or the axle shaft was not installed all the way into the joint after removal leading to the clip not engaging the joint and binding the differential in the transmission. This is...

Steering Issues - 2001 Ford Mustang

Hello, thanks for writing in. The symptoms described are commonly caused by issues with the power steering system. It may be possible that the power steering fluid has run low, or an issue has occurred with the power steering pump....

Related articles

The Best Used Cars to Buy If You Have Kids
Once Once you have kids, the kind of car you have becomes very important. Suddenly, the amount of space, entertainment features, reliability, safety, and easy to clean interior become the top priorities. Here’s a list of vehicles meant to satisfy...
2012 Ford Escape vs. 2012 Honda CR-V: Which One Should I Buy?
SUVs represent one out of every three vehicles sold in 2012, making them one of the most-purchased types of vehicles in the country during that time period. Compact SUVs are a sub-class that are slightly smaller and offer the most...
The Do's and Don'ts of Jumpstarting a Car
Knowing how to jumpstart a car is a skill all drivers should have. Always ground the circuit and connect the jumper cables to the proper terminals.