Car won't start?

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if so, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, cap and rotor, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing

Good morning.

Yes, that is the issue. Fuel is the oil for the fuel pump. When you run out of fuel, the pump runs dry and fails.

You need to replace the fuel pump.

Roy

REMOVAL PROCEDURE
1. Relieve the fuel system fuel pressure.
2. Drain the fuel tank.
3. Remove the fuel tank.
4. Remove the fuel sender assembly.

DISASSEMBLE PROCEDURE
1. Inspect the position of the fuel pump fuel strainer (3) for installation.
2. Support the fuel pump (4) with one hand and grasp the fuel pump fuel strainer with the other hand
3. Pull the fuel pump fuel strainer off of the fuel pump.
4. Inspect the fuel pump fuel strainer. If the fuel pump fuel strainer is contaminated, the fuel tank should be cleaned.
5. Discard the fuel pump fuel strainer after inspection.
6. Inspect the fuel pump inlet for dirt and debris. If dirt and debris are found, the fuel pump should be replaced.
7. Remove the fuel pump electrical connector, if fuel pump is being replaced.
8. Place the fuel sender assembly upside down on a bench.

NOTICE: Do Not run the fuel pump unless the fuel pump is submerged in fuel, in order to prevent damage to the fuel pump

9. Pull the fuel pump downward in order to remove the fuel pump from the fuel pump mounting bracket, then tilt the fuel pump outward and remove the fuel pump from the fuel feed pipe.
10. Transfer the fuel pump to the new fuel sender, if fuel sender is being replaced,

ASSEMBLE PROCEDURE
1. Install the rubber insulator on the fuel pump.
2. Position the fuel sender (1) assembly upside down.

IMPORTANT: Always install a new fuel pump fuel strainer when installing a fuel pump.

3. Install the fuel pump between the fuel feed pipe and the fuel pump mounting bracket.
4. Install the fuel pump electrical connector.
5. Position the new fuel pump fuel strainer (3) on the fuel pump and push on the outer edge of the fuel pump fuel strainer until the fuel pump fuel strainer is fully seated.

INSTALLATION PROCEDURE
1. Install the fuel sender assembly. Refer to Fuel Sender Assembly Service
2. Install the fuel tank. Refer to Fuel Tank
3. Lower the vehicle.
4. Add fuel and install the fuel tank filler pipe cap.
5. Install the negative battery cable.
6. Inspect for leaks.
- Turn the ignition switch to the On position for 2 seconds.
- Turn the ignition switch to the Off for 10 seconds.
- Turn the ignition switch to the On position.
- Check for fuel leaks.

The third thing you need to start is compression, remove all plugs get a gauge screw the gauge into each cylinder one by one, record the readings. The other thing to check. Is the check engine light on? See if you can get the codes read. Try wiggling the connector at the crankshaft position sensor.

I agree with merlin, If you have proper fuel pressure and spark, check the compression. Also, look at the top of the intake manifold just behind the throttle body.I have had several 3.8s that have had a hole burnt through the manifold. It is caused from the EGR pipe overheating the manifold and causing an internal coolant leak. Be sure to check your coolant level also. :)

Thanks Den!

You might want to double check your fuel pressure to make sure it is within specs.

In order for an engine to run, it must have air, fuel, compression, and spark. If it has an electrical problem, that usually takes away the fuel or spark. Be sure you check the basics.

Good morning,

Does the security light come on and stay on when it starts and stalls?

It sounds like a security issue.

https://www.2carpros.com/articles/how-to-reset-a-security-system

Roy

Ok, you need 3 things for the car to run. spark, compression and fuel pressure.

Has anyone checked for spark?

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Can you hear the fuel pump run with the key on?

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

How did the car run prior to this issue?

https://www.2carpros.com/articles/how-to-test-engine-compression

Roy

Why did you change the MAP sensor? Please give all detail as to what problems and what solutions have been tried.