Chrysler Repair: engine replaced on 1996 concorde 3..3, no spark, 1996 chrysler concorde, chrysler concorde

Question
we replaced the engine of a 1996 Chrysler Concorde 3.3 and have no spark. Is there something that needs to be reset before we can go further or can you give us an idea of where to begin to find the problem?

Answer
Hi Ronda,
The quickest way to start toward a solution would be to ask the engine controller whether it sees any problems and thus has a fault code stored in its memory. Use the ignition key:"On-off-on-off-on and leave on" doing that in 5 seconds or less. Then watch the check engine light, which remains "on", to begin to flash, pause, flash, etc. Count the number of flashes before each pause, then repeat the readout to assure an accurate set of counts. The last two sets of flashes will be 5 in each. If you combine the numbers in pairs in the order of appearance you will have any 2-digit fault codes. The last will always be 55 because it is the code for 'end of readout'. You can then either write back with the codes, or go to www.allpar.com/fix/codes.html for a list of codes. It may be that one of the engine rotational position sensors (crank or cam) is not putting out a pulse (code 11 or 54, respectively) and that would be a cause for no spark.
If you show any sign of spark, like starting for a couple of seconds and then dieing, that might be a sign of a problem with the anti-theft system (if you have that feature).
So let me know what you learn. I have the shop manual and can suggest some wiring possiblities to check, but give the code readout a chance.
Roland