Q: Stuttering with check engine light

asked by on

My car started stuttering tonight, battery light was flashing on and off. It doesn't stutter once I'm up to cruising speed. I had the head gaskets replaced last summer. I tested the battery and alternator tonight, and they both are good.

It just recently started making a high pitched whine when I start it, and I've had some electrical issues with lights and stereo system recently as well. I've had no issues with it driving up until tonight, just trying to get an idea of what the issue may be. Thanks a lot.

My car has 163000 miles.
My car has an automatic transmission.

If you are having an electrical system problem that is causing the lighting and other systems to have erratic issues then you need to check the alternator wire connections on the back of the alternator for loose or bad connections. The alternator may have an internal short causing ignition to get voltage spikes or the systems loosing voltage. Try to check the alternator with all the lights and accessories on high settings to load the alternator.

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. Stuttering with check engine light

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: The car turns off when shifting the gear to neutral automatically.

This is likely related to what is called a neutral safety switch. This is an electrical switch near your transmission that is designed to not allow the car to start when in any gear other than park. Occasionally, this switch...

Q: Trouble code P2015. I don't know how to fix it.

The intake manifold runner control is a system that controls amount of air entering the engine, by way of valves in each intake manifold runner. They are linked together as 4 per side, bank 1 and bank 2. The control...

Q: When i have my car running with my heat or ac on my car hesitates like it wants to stop when i'm stopped at a light.

As you may know, your car's AC system when working properly puts an extra load on the engine at all times when it is running. When this happens, your car's computer makes adjustments to compensate for this extra load on...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
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...