Q: Car wont stay running

asked by on

ok car will start fine for about 2-3 seconds then will start shaking and dies, i check fuel pressure is ok, coils are ok, wires are new, spark plugs are ok, timing is ok, what can be the cause no cel on, also i was having trouble with the transmission but do u think that has something to do with it thanks

My car has 180000 miles.
My car has an automatic transmission.

It sounds like you may have a sticky or faulty idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at idle. This valve is controlled by the vehicle’s computer and will adjust idle speed based upon other measurements such as engine temperature, intake air temperature and electrical system load or voltage. This is also an important function when starting the motor as it allows the motor to run and idle on it’s own once the motor fires. When you accelerate, the engine RPM increases, and as you let off the gas, the RPM slowly returns to the normal idling speed with the help of the idle air control valve making the transition from a higher RPM back down to idle speed while adjusting the air/fuel ratio constantly to allow this to happen smoothly. When the engine RPM drops below the normal range of about ~800 RPM, this often times will cause the engine to stall indicating a dirty or faulty idle air control valve. I would recommend having an expert from YourMechanic come to your location to diagnose and inspect your vehicle.

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 wont stay running

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: Steering lose, steering wheel vibrates noise when I make a turn

The steering linkages and/or suspension components were probably damaged. The impact could have also damaged tires, wheels, the dynamic balance of those assemblies and possibly caused frame damage, too, if the "bosses" on the sub-frame to which the suspension bolts...

Q: Left turn signal not working.

The turn signal switch in the steering column is not making good electrical contact in side the switch. The worn switch may have to be replaced. I recommend having a qualified mechanic, like one from YourMechanic, to check it out...

Q: Can you bypass a neutral safety switch gone bad temporarily

Yes you can by connecting the purple wire and the purple with white stripe wire on the clutch switch. This should be done temporarily only for testing. It would be unsafe and unwise to keep it this way since it...

Related articles

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.