Fuel pump relay location

Check fuel pressure. If the pump is failing, the pressure will be lower than it should be. If it is the relay, it will lose pressure entirely when the engine stalls.

The relay is in the diagrams below

Turn the key to on, and listen for the pump, it should run for 2-3 seconds, if not check fuses and relay in the power distribution center under the hood. If they are OK check the connector at the tank and test for power. Is your check engine light on? There will be a code set if it is the fuel pump driver module, or PCM...you will get P1233 or P1234 scan it, even if you have to buy a cheap scanner at Autozone...It's an investment that can be used on all cars sold in the US sinc 1996...post the result, or let me know if the light isn't on, Also make sure the inertia switch is pessed down, it's in the trunk...Fuel pump driver module is behind the right kickpanel, the pink/black wire is pump power, and the whte/red is pump control, test pink black for power while someone turns the key to ON.

The right thing to do! Are you familair with car mechanics and testing?

The other thing to check is the crank sensor, PCM must recieve the crank signal to energize fuel injectors.

You could have a blockage in the intake tract or exhaust tract. One common thing is for catalytic converters to rust out and collapse in on themselves and block the exhaust. You can try banging on the converter with your hand or a rubber mallet to listne for losse metal.
Another problem might be the Idle Air Control Valve, IACV, which controls idle. It is located on the intake manifold near the throttle body. You can test it by removing it and leaving electrical connnector on, some have coolant lines running through them leave those one, and get an assistant to help you. Watch the solenoid plunger while your helper starts the car. It should move when the car starts.
Also look for carbon deposits in the trottle body by taking of intake tube. You may need to clean the thrttle body and IACV. When you do so use always spray towards the intake meaning the direction air would flow into the intake tract. Otherwise you could force depsoits deepr into the ports in the IACV.

A good bet, but if it starts with throrrle held prt open, can be TPS as well, But Ford did have some problems with IAC's, pull it off, if it's shinny inside, it indicates a backfire. And that woul;d of course ruin the valve!

What is the exact pressure?

Roy

I don't know why you would start simply throwing parts at it with no testing at all.

All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.

Every engine requires spark, fuel and compression to run. That's what we have to look for.

These are the basics that need to be tested and will give us the info required to isolate a cause.

1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.

2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.

3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.

Once you have determined which of these functions has dropped out,
you will know which system is having the problem.

Inertia Fuel Shut Off switch will be either in cargo area behind right rear wheel well or on left "B" pillar (depending on model and engine). If tripped, switch has to be manually re-set.

Battery junction box behind radiator
Fuse #116 20A
Fuse #102 30A
Fuel Pump relay