Dodge Repair Questions? Ask a Mechanic for Answers ASAP
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Dale, When the engine stalls, does it start right back up or does it take some time to start and run again. If it just cranks over and does not fire up, do you know if it is missing spark or fuel?
Thank you for that information. So does the ignition coil get power while cranking when it does not start?
Can you tell me what color wire changes at the fuel pump relay?
That is the control side for the ASD relay and fuel pump relay.
IT will change from power to ground and ground to power as the PCM is trying to activate it. This is normal
I understand. You need to see if your missing spark or fuel when this happens.
Ok, so have we checked the inputs to the ignition coil? If so, how and what were the results?
Ok, well the ignition coil gets pulsed to ground by the computer. It cannot produce spark unless it has this ground signal trigger.
You can use a test light or a lab scope. I assume you dont have a lab scope so a test light would be best. Hook up the test light aligator clip to the battery positive and touch the tip of the test light to the trigger side of the coil and it should flicker as the engine is being cranked over. Keep in mind it will be a very dim flicker so do this in a dark garage so it is easy to see
You could have a faulty new ignition coil or a bad engine speed sensor (crank sensor or cam sensor inside the distributor) or the ECM may not even be awake so be sure to check that as well.
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