Skip the auto shop - Our mechanics make house calls

Q: My car's engine intermittently stalls

asked by on

Has run great, but lately I'll be driving and engine will just shut off. I pull over and it starts right up and I drive away. Today it stalled on me, I couldn't pull over right away and it just started by itself. We had the fuel pump changed for a noise issue 2 1/2 yrs ago, they changed the relay and filter also. Any ideas?

My car has 185000 miles.
My car has an automatic transmission.

A: Hello. If the engine is just shutting off t...

Hello. If the engine is just shutting off then it may be an electrical issue with the ignition switch or the main relay. If the engine starts sputtering before it turns off and then it starts up again then that new fuel pump may have an issue or it may have an ignition problem. I have also had crankshaft position sensors fail on this engine and cause this.

Since it is intermittent it can be hard to diagnose. I usually install a scan tool to monitor the sensor readings when the vehicle is going to stall. This can indicate to me if it is a sensor issue or if it is related to the fuel system. If those look fine then I look further into the ignition system to see if there is a failure in the secondary ignition system.

If you need to have this intermittent stalling problem checked, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair this problem.

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

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: Car died after jerking.

This car and engine combination has had multiple problems that could be the cause of your stalling. The fuel pump, crank sensor, engine control module, coil pack and ignition module. All these could be the cause of a stall when...

Q: Car locks not working, keyless entry not working

When this occurs, there are a few usual culprits. The most common include: the key fob failing, the car's security system is malfunctioning, or the door lock actuators have failed. The other door lock actuators failing is the most unlikely...

Q: Engine starts, but will not restart for an hour

If you have confirmed correct fuel pressure when you changed the fuel pressure regulator, I would next check the engine coolant temperature sensor for the fuel injection system. That sensor, if failing, is generating a false "cold" reading, causing the...

Related articles

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...