RE: 1994 Dodge Dakota Won't Start
Had a similar problem with my 96 Dakota, 3.9. Turned out to be the vacuum Surge Solenoid failed. To test this, remove your PCV valve from the right side valve cover and remove the PCV valve. Start the engine, then plug the hose. If the engine stalls it is the Surge Solenoid. (Also I found out that if the battery is not taking a full charge it will effect the Solenoid. After replace the Surge Solenoid the truck ran good for a few days, then it would not start again. I tested the volts at the Solenoid and it was only at .75 volts at idle- Should be 4.5 volts. The voltage disappeared at 2500 RPM once I got it going, it should of been 1.5 volts. Found my alt. was putting out over 14 volts but after running a while I check my battery and it was only around 10.5 volts. Change the battery and trucks been running great since) Checked my old Solenoid and it had no continutiy, new one does. Maybe because of the floating volts it quit - who knows. I had made a previous posting under the Dakota forum "Vaccum Problems" that may explain it better.
If this does not help - try your Auto Shutdown Relay in the Control Center under the hood (If this had failed your truck should of never started the second time) but it is worth a try and yes you can swap any of the six relays in the control center. I usually use the fan or A/C relay when I am trouble shooting.
To check your fuel pump is easy. Turn your ignition to the on position and have someone listen to the pump in the tank. Mine makes a distinct sound. Then remove the relay from the control center. When the sound quits, reinstall the relay and if the pumps starts making noise right away the pump is still good. (when reinstalling the relay be sure to push it down squarely and smoothly - the ignition should still be in the on position, this way it will not spark. Haven't had one spark yet but just so you do not get nervous) If the pump did not start right away I would suspect the pump or wire.
As for the filter it is located on the frame and you can not buy a jobber. I went to NAPA for the one on my 96 and they said was a protected design. Had to buy right from the Chrysler Dealer. $129.00 CDN. Took it an Auto store in town to match up, found one close but the ends were unique.
Sorry to keep babbling - Hope this Helps -- Darrell