My engine stalls while driving?

First, I would see if it pulls and codes. And if it does go from there.

Check intake gasket and timing
I would recheck the fuel pressure too
disconnect MAF sensor start and check if any improvement
clear codes and recheck if you have codes let me know what do u have for codes

Has the check engine light come on? Also, has the fuel filter been replaced? Finally, here is a how to for checking fuel pump pressure. I need you to check it and let me know what you find. Also, does the car start right back up when it dies?

Let me know:

https://www.2carpros.com/how_to/how_to_check_fuel_pressure.htm

Joe

Hello,

Thank You for the Donation....

Since engine light came on there is most likely a code set. You will need to pull codes...

Here's How.....

To extract DTCs from the computer for diagnostic purposes, the Self Test connector is used. It is located in engine compartment on drivers side on fender well.

1.Start engine and bring to normal operating temperature. If engine will not start or stalls after starting, proceed with next step.
2.Turn the key "OFF", then wait ten seconds.
3.Activate the self test by grounding the Self-Test Input (STI) connector.
4.Turn the ignition key "ON". Engine Light will Flash codes.
5.Record all codes received.
6.Turn ignition "OFF".

The following is how to read flashes...

Codes will be 2 digits.....

Flash short pause flash long pause = code 11

flash short pause flash flash would = code 12

flash flash short pause flash would = 21

and so on.

Post codes back here in forum.....

Ok, have you check to see if you are geting spark at the plugs? If so and you are getting spark what color? It should be a Bright Bluish/White. If Orange it is weak and could be the Coil Pack.

Also try disconnecting the MAF (Mass Air Flow) Sensor and try starting.

You say you are getting fuel did you check the fuel pressure. If not you may not have enough fuel pressure and testing the pressure will help determine if it is the fuel pump or the regulator.

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The code indicates a bad ground somewhere between the PCM and the Engine. So you will need to check the grounds.

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Ooops sorry, you need to check the grounds wires coming out of the PCM which is located behind passenger side of dash near kick panel.

Everything that requires power must have an appropriate ground. All electrical components need power, and the power must make it back to ground. It must be a complete circuit. That is the reason it is called a circuit.

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Ok, since the code you posted is 542 and the Code Def is Fuel Pump Circuit Open - PCM to Motor Ground, that indicates a ground problem. It could also be a Bad PCM.

There are only a few wire to check and since it is in the Fuel Curcuit through the PCM all you should have to check is the PCM Case Ground and the FPM Ground.

Look at the diagram for you engine size.

Remove the Harness to the PCM Find the Color Coded wire for the PCM Ground #20 in both Diagrams. Find grounding point and use Ohm Meter to test.

Then look for the FPM #8 in both diagrams and they are both the same color code Dark Green with Yellow Stripe. Use same proceedure as above to test.

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