Engine dies within 2-3 seconds of starting

Will it stay running if you hold the gas pedal down a little? If so, the battery was recently disconnected or run dead. The Engine Computer will have to relearn "minimum throttle" before it will know when it must be in control of idle speed. To meet the conditions for the relearn to take place, drive at highway speed with the engine warmed up, then coast for at least seven seconds without touching the brake or gas pedals.

Caradiodoc

To check the relays, just swap two identical ones. I usually pick the starter relay because it's real fast and easy to tell if it is working.

Try unlocking the passenger front door with the key. If that lets the engine start, suspect broken wires between the driver's door hinge, or less-commonly, the disarm switch in the driver's door is defective or disconnected. If I remember correctly, if the problem is related to the switch, the anti-theft light will blink for 16 times showing it is turned on, when you close the doors after NOT pressing the lock button on the driver's door or the remote key fob. Locking the doors manually with the k n o b s on the doors should not turn the system on. I can't remember if using the key in the door will turn it on. When the system is armed and causing a no-start condition, the parking lights will flash repeatedly when you crank the engine. If the lights are not flashing, it is more likely you have a problem not related to the anti-theft system.

If the anti-theft light does not flash when closing the doors, you can use a scanner to view sensor and switch state. "Fuel request" will be listed as "allowed" or "denied" or as "on" and "off" depending on the brand of scanner. Many auto parts stores are borrowing equipment and tools but for a scanner, which is considerably more significant than a simple code reader, you might have to go to a mechanic. I use the Chrysler DRB2 and DRB3 for all of my cars and vans including a '93 Dynasty which is the twin to your car.

Caradiodoc