Incorrect Fuel Pump Installation: If the fuel pump was not installed correctly, it could be the cause of the stalling issue. Ensure the fuel pump is properly secured and connected to the fuel lines and electrical system.
Electrical Problems: Check the electrical connections related to the fuel pump. Loose or damaged wiring can disrupt power supply to the fuel pump, causing it to malfunction.
Fuel Pressure Issues: The fuel pressure regulator or fuel pressure sensor might be faulty, affecting the fuel pressure in the system. Low fuel pressure can lead to stalling.
Fuel Tank Issues: Even though you mentioned checking the fuel tank for kinks, ensure that the fuel pickup inside the tank is properly positioned and not obstructed. A faulty fuel tank vent system can also cause fuel starvation.
Clogged Fuel Lines: Despite your effort to inspect for kinks, there might be some other obstruction or blockage in the fuel lines that restrict the flow of fuel to the engine.
Faulty Fuel Filter: Although you mentioned that the fuel filter is not getting fuel, it's still possible that the fuel filter itself is clogged or defective. Install a new fuel filter to see if that resolves the issue.
Air in the Fuel System: If air enters the fuel system during the fuel pump replacement process, it can cause the engine to stall. Check for any leaks or loose connections that could allow air to enter the system.
If you've ruled out these potential causes, it's recommended to have the car diagnosed by a professional mechanic who can perform further tests and identify the exact source of the stalling issue.
