While there are a variety of reasons your Buick Century won’t start, the most common 3 are a dead battery, an alternator problem, or failed starter.

The most common reason that a vehicle shuts off when driving is a lack of fuel. The most likely cause is an empty fuel tank aided by a fuel gauge that’s not as accurate as it looks. Even if it says there is fuel in there, bang on the tank. If it makes a hollow sound, it’s probably empty.

While there are a variety of reasons your Buick LeSabre won’t start, the most common 3 are a dead battery, an alternator problem, or failed starter.

1-Turn ON the ignition, with the engine OFF. 2-Attempt to start the engine, then release the key to ON (vehicle will not start). 3-Observe the SECURITY telltale(this is the security light), after approximately 10 minutes the telltale will turn OFF. 4-Turn OFF the ignition, and wait 5 seconds .

Insert the car key into your car’s ignition and turn it on. The car’s accessories will be activated but not the engine. Step 3: Do another check on the anti-theft light. If it isn’t blinking any longer, then turn the key over to the Off position and let it sit for a couple of minutes.

If you turn the key to the run position for 10+ minutes, the security light should go off and the car should start.

You can check this system out….. lower the driver’s window…get out of the car….. lock car with key fob…… wait about 30 seconds….now reach inside and manually unlock the door…now open the door from the inside….the alarm should go off(this confirms that you have CTD installed in car)…..

Low fuel pressure, dirty or defective fuel injectors, or broken fuel pump: The fuel pump is responsible for transferring fuel from the tank to the engine. Loose or corroded wires in wiring harness: An inconsistently firing ignition will result in an easily stalled engine.

If you unplug the mass air flow sensor the car will start. If you try to plug it in while it’s running the car will die.