Q: Car idles, surges, then lowers, and then dies

asked by on

My car is idling and surges high, then it goes lower than normal, then completely dies. What is causing such as this?

Hello. It sounds like there may be a loose or disconnected vacuum hose. The upper or lower intake gasket could be leaking as well. There is also a possibility that the mass airflow (MAF) sensor, idle air control valve, or throttle position sensor is faulty. My suggestion is to have a certified technician, like one from YourMechanic, come and complete an inspection to inspect why your car is stalling.

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. Car idles, surges, then lowers, and then dies

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: Truck cuts off when stopping

Hello. Stalling at stops can be caused by many things. A few common causes are: faulty idle air control valve vacuum leak fuel or engine management issue The most common of these is a failed idle air...

Q: Car turns on, runs about 30 miles, and then starts shaking and turns off - 2007 Toyota Sienna

Hi there. What will help you the most is determining the nature of the failing behavior when the car shuts off. Does it have spark after it shuts off? After it shuts off (immediately after), if you spritz some starter...

Q: Car will start but won't idle

This may be a sign of a failing idle air control valve. The idle air control valve is located on or near your intake manifold that monitors the air intake as it is mixed with fuel prior to being injected...

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...
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...
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...