Fuel pump relay problems
Top problems
No start no fuel
Ford Fairlane 1997 sedan 5l V8 200000 miles
Replaced fuel pump relay that was old and intermittently failing but even with new one no fuel no start.
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Here are a few things you can try:
Check the fuel pump. The fuel pump is responsible for delivering fuel to the engine. If the fuel pump is not functioning properly, it can cause starting problems. You can check the fuel pump by listening for a humming noise when the key is turned to the "on" position. If you don't hear a humming noise, it could indicate a problem with the fuel pump.
Check the fuel pressure. The fuel pressure should be within a certain range for the engine to start. If the fuel pressure is too low, it can cause starting problems. You can check the fuel pressure by using a fuel pressure gauge.
Check the fuel filter. The fuel filter is responsible for removing contaminants from the fuel. If the fuel filter is clogged, it can cause starting problems. You can check the fuel filter by inspecting it for any visible damage or debris.
Check the fuel pump relay. The fuel pump relay is responsible for turning the fuel pump on and off. If the relay is not functioning properly, it can cause starting problems. You can check the fuel pump relay by inspecting it for any visible damage or wear and by replacing it if necessary.
If you are unable to identify the source of the problem or if the issue persists after checking these components, I recommend having a mechanic diagnose and repair the issue to ensure that the problem is properly addressed and the vehicle is safe to drive.