Skip the auto shop - Our mechanics make house calls

Q: Cuts out while driving

asked by on

The engine light is saying bad coil pack. So we changed spark plugs and coil packs and it still cuts out while driving an idling.

My car has 229000 miles.
My car has an automatic transmission.

Any time a vehicle cuts out while driving then it will have set failure codes in the computer. If you have the codes then please supply them the next time you have problems. This helps us to come up with a diagnosis for your problems. In this case you state there is codes to the ignition system failures. Replacing parts without doing the proper pinpoint test for the codes is just throwing away money unless you get a lucky guess and replace the correct part that caused the stalling. Have the codes retrieved and have them diagnosed correctly using the pinpoint test and then a cause of the failure may be found.

Was this answer helpful?

Hi there. It is possible that the OBD-II trouble code that may have indicated a possible problem with the coil packs might be something related to this system; such as an electrical harness that is damaged. Without knowing what code you received, it’s hard to tell for sure; so you might want to have a professional mobile mechanic come to your location and complete a car starts then dies inspection; to determine what is faulty and needs to be replaced.

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: Lost key won't start

Hi there, thanks for writing in. The key is programmed to disable the theft system and if you replace the ignition lock and key it will not disable the system unless you have the system reprogrammed to work with the...

Q: Everything works but it won't crank

If the motor just stopped out of nowhere, this may suggest many different possibilities such as a loss of spark or a fuel delivery problem. If the motor does not crank, this may suggest an issue related to the starter...

Q: Fast idle and won't restart after the engine is warm.

Hi there. The code for your vehicle would be the code 15 that you are having trouble with. The code 15 states that there is an intermittent power cutoff. Measure voltage with a digital volt meter to pin 1 wire...

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...
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...