Q: Why would my 2003 Chevrolet Impala stall and now it runs rough.

asked by on

The car died while i was driving it. It started right back up but I noticed that when I rev the engine while it is in park, it is not a smooth rev. It kind of sputters like it doesn't have full power. I don't notice any issue while driving, and the "check engine" light is not on. Could this be a spark plug issue, is it a misfire, loss of fuel to engine? Thanks in advance

My car has 71000 miles.
My car has an automatic transmission.

Hello. Though there are a lot of things that can cause this typically it is due to an issue with a failure in a spark plug or an ignition coil failure. If there is not a check engine light on I will still install a scan tool to look for misfires and to see if there are any faulty sensors readings. If you have not had a tune up done recently then that may be all that it needs. If you are looking to get this taken care of, consider YourMechanic, as a certified mechanic can come to you to [diagnose why the engine is running rough] https://www.yourmechanic.com/services/car-idle-is-rough-inspection

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
  1. Home
  2. Questions
  3. Why would my 2003 Chevrolet Impala stall and now it runs rough.

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: My car is cutting out it is an 02 impala and it seems like it is starving for gas. I have replaced the mass air flow sensor, plugs

You should first scan the computer for codes. Diagnose any codes received. The problem sounds like a clogged fuel filter. Replace it if it has not been replaced.Then it can be the camshaft or crankshaft sensors on this engine. ...

Q: Was Traveling down the highway at 70 mph when my auto control clicked itself off and the car stalled 2010 Nissan Sentra

Hello. I have seen this frequently on this vehicle. Most of the time the issue is with the crank position sensor. This sensor tells the computer that the engine is rotating. If it fails the engine stops. These will go...

Q: Q: Car cranks but wont start

Hello there, many faults can cause your 2003 Nissan Murano to crank but not start. Replacing the battery is a great first step as this is routinely the cause. Other likely faults are the starter, fuel pump, fuel filter, ignition...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.