Fuel Pump
The fuel pump is responsible for delivering fuel from the gas tank to the engine. When the fuel pump fails, the engine will not receive the fuel it needs to start. There are a few things that can cause a fuel pump to fail, including:
- Electrical issues: The fuel pump is powered by an electrical circuit. If there is a problem with this circuit, it can prevent the fuel pump from receiving the power it needs to operate.
- Mechanical issues: The fuel pump can also fail due to mechanical problems, such as a faulty fuel pump relay or a clogged fuel filter.
Ignition Component
The ignition system is responsible for creating the spark that ignites the fuel in the engine. If there is a problem with any of the components in the ignition system, it can prevent the engine from starting. Some common ignition components that can fail include:
- Spark plugs: The spark plugs are responsible for creating the spark that ignites the fuel. If the spark plugs are worn out or damaged, the engine will not be able to start.
- Spark plug wires: The spark plug wires carry the electrical current from the ignition coil to the spark plugs. If the spark plug wires are damaged, the engine will not be able to start.
- Distributor cap and rotor: The distributor cap and rotor are responsible for distributing the electrical current to the spark plugs. If the distributor cap or rotor are damaged, the engine will not be able to start.
Other Causes
In some cases, a 1990 Ford Aerostar engine may not start after it has reached operating temperature due to other problems, such as a:
- Bad battery
- Bad starter
- Faulty engine coolant sensor
- Faulty oxygen sensor
- Faulty EGR valve
If you are experiencing this problem, it is important to have your vehicle diagnosed by a qualified mechanic. They will be able to determine the cause of the problem and recommend the best course of action.
