Q: Engine starts but stalls immediately

asked by on

My vehicle was performing great prior to the following. I poured 14 oz. of my favorite Lucas Upper Cylinder Lubricant into a 1/4 tank of existing gas, started the engine and let it idle. I forgot about the engine being started for about 4 hours. I turned the engine off. The next morning I went to start the engine. The engine started but stalled immediately. The engine starts but will stall immediately unless I have my foot on the gas pedal. Hopefully it's an easy fix. Would like some input.
My car has an automatic transmission.

This may be an issue related to what is called an idle air control module. This is a module that regulates the amount of air that is allowed into the intake system as it is mixed with the fuel before being injected into the motor. When this is not working properly, this will cause the car to stall as you describe. I would suggest having an expert from YourMechanic come to your home to definitively diagnose the stalling issue and make necessary repairs.

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. Engine starts but stalls immediately

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: Battery light on and vehicle died while driving

Hi and thank you for contacting YourMechanic. First thing to do is get the new battery checked and new alternator checked. In my years as a mechanic, there has been multiple times when I have installed a new out-of-the-box item...

Q: Car has no spark

Hi There, This may be related to many different possibilities, some of which may be related to a lack of spark or possibly timing issues. Things like ignition coils, crankshaft position sensor, spark plugs, spark plug wires or ignition module...

Q: My transmission was slipping severely the fluid level was ok I flushed it out and add Lucas stop slips and leaks now works fine?

I'm betting that whatever is wrong with your transmission is still wrong. Some of those "mechanic in a can" liquids can buy you a little time, but more often they cause more harm than good. Most of them have additives...

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...
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...