Q: Q: Car runs rough and stalls

asked by on

My car (62000 mileage) is idling, stalling, and rides rough at both low speeds in town and high speeds on the highway. It happens all the time, no matter what the gear, or in park or neutral. The codes that come on and off are the stabilitrak and the cylinder misfire. I'm consistent to get regular maintenance, and I just changed all the spark plugs. In your expert opinion, what does this sound like could be the problem?

GM has a TSB which addresses excessive carbon buildup in the intake and on the valves. This can cause uneven cylinder filling and misfire faults as a result. GM recommends an intake cleaning to remove the carbon deposits. It requires a special tool to introduce the cleaning solution through a vacuum port in order to clean the intake system. You may want to enlist the help of a mechanic to assist in the inspection and cleaning of the intake system. If you need help with this, a certified technician, such as one from YourMechanic, can come to your home or office to diagnose your car’s stalling issue and determine what needs repair.

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. Q: Car runs rough and stalls

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: Why does my Transmission in my Mercedes stay stuck in overdrive at times?

I am working on this

Q: How do I use the Timer feature in the driver information center (DIC)?

The Timer feature in the driver information center (DIC) allows you to set a timer through the DIC display. To use the timer, follow these instructions: 1. Press the MENU button until the DIC displays Trip/Fuel Information Menu. 2. Use...

Q: Coolant is not being pulled from the reservoir.

Hello. From what you describe, it appears that your vehicle may be leaking coolant or may perhaps have air in the cooling system. First off, I would carefully inspect the engine bay and undersides of the vehicle for any signs...

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...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...