Does not start in morning and cold weather - Malibu Chevrolet Cars & Trucks

If your vehicle is fuel injected the problem you describe could be result of a few different things: 1) Check your Idle Air Control (IAC) sensor/motor. This sensor is located on your vehicles, throttle body. The purpose of this sensor is to control the car's idle under various operating conditions including ambiant temperature. In order for it to function correctly, the internal components must be clean (meaning, little or no carbon build up) and it must be undamaged. Sometimes the IAC can be cleaned; however, if this cleaning procedure is not properly done, the IAC can become damaged. This sensor is also sometimes called the "Cold Start" sensor. A new IAC will cost $50-$100. 2) Check you Coolant Temperature sensor. This sensor is located on the top of your engine and is screwed into your intake manifold. When this fails your car will experience starting problems when cold outside. A new Coolant Temp sensor will cost about $100. 3) Your battery could be improperly sized for your velicle. If the Cold Cranking Amps (CCA) are not at or above the manufactures standards, your starter will not turn fast enough (when it is cold outdoors) to start your vehicle. Take a look at these three solutions first. My guess is your IAC needs to be cleaned or replaced. Good Luck!

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What if you have purchased a new battery and the car still will not start when it is cold.

When it is cold and the vehicle will not start, it usually means that your battery is going bad. I would suggest replacing the battery. The engine has to turn over at a certain rpm to start. If the battery is not turning the starter fast enough, then the engine will not start.