If your car stalls out at red lights, it means that your engine suddenly can’t control the idle. When your engine loses the ability to control the idle, this could be due to several factors, including the following: A malfunctioning or dirty mass air flow sensor.
What causes a car to stall when stopping?
If your car stalls when stopped, it could be air-related, fuel-related, or ignition-related. Incorrect air readings could result in your car stalling. It will usually fire right back up though. If there's not enough fuel pressure from the fuel pump or from a blocked fuel filter, your car might stall at idle.
What causes engine to stall?
Stalling problems trace back to three primary causes: a lack of fuel, not receiving enough air, or insufficient power. Common reasons include an empty gas tank, a faulty fuel pump, a bad ignition coil, fouled spark plugs, water in the fuel, or a failing sensor. An engine stall is never fun.
Can low coolant cause stalling?
A Bad Engine Coolant Temperature (ECT) Sensor
This won't cause cold stalling but, it can make for a rough idle once the engine warms up. If the coolant sensor reads warmer than normal, or reads hot all the time; the (PCM) will lean out the fuel mixture too much; causing the engine to stall when it is cold.
Related Question Why is my car stalling at red lights?
How much is a new spark plug?
You can pay between $16 and $100 for a set of spark plugs, depending on the type of plugs you need and the number of cylinders your engine has. And when figuring out the price, it helps to remember that some specialty engines use two spark plugs per cylinder.