Chrysler Repair: loss of spark: 00 2.5L V-6, 4 digit numbers, crank sensor


Question
QUESTION: I have a 2000 sebring lxi.  I had to change the thermostat and removed a plug wire to get to bottom bolt.  I forgot to put it back on and started the car.  It ran rough, I remembered, replaced it and tried to start it, nothing.  I check spark and there is none.  Any ideas.

ANSWER: Hi Allen,
Try using your ignition key:"on-off-on-off-on and leave on" doing that in 5 seconds or less elapsed time. Then watch the odometer window to see if the mileage changes to show 4-digit numbers preceded by a P. Tell me those numbers and we'll go from there. Other than that I would go over what I did and try to find something else that is diconnected. Maybe one of the wires on the spark plug cap. How about changing out the rotor, or at least check that it conducts from the center button to the tip with an ohmmeter or continuity testor? That would cause a loss of spark.
Roland

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QUESTION: I checked codes with a scanner and everything passed, no codes.  Rotor and dist cap are good.  I am going to check the coil next, but I don't really know of a reliable way to test them other than resistance.  Is there any thing controlling voltage to the coil that could not allow voltage?

Answer
Hi Allen,
Fuse 5 in the power box under hood sends voltage to the coil primary on single dark green/orange wire with its own plug, and that could only be interupted by the ASD relay opening (which it shouldn't if you show no rotational sensor codes). But watch the voltage on that wire while you are cranking. It is not present all the time: only for about a second when you turn the key to 'run' position, then returns when you start cranking. If you have it, and there are no codes, and rotor and resistances of the coil pass, then you should get spark. The only possibility is that there is an issue with the cam/crank sensor but not so bad as to set a code, but that is unlikely.
Roland