Chrysler Repair: 1993 B 250 no start, spark coil, cam sensor


Question
MY CAR IS A 1993 DODGE B-250 5.2LTR 318, MY CAR TURNS OVER BUT DOES NOT STATRT, THERE IS NO SPARK, CHANGED FUEL PUMP,COIL,ROTOR ANDE DISTRIBUTER CAPS, MAP SENSOR, O2 SENSOR, ASD SENSOR, CPS SENSOR, 8 PLUGS, SMEC , CODES FOUND 33/AC , 25 IACM , CODE 5 ? IT RAN FOR 3 MINUTES AFTER COIL CHANGE AND WILL START AGAIN.
ANY SUGGESTIONS FOR ME ?

THANK YOU

Answer
Hi Anita,
By "5 ?" am I correct in assuming that was a 55 (which means end of readout), or could it have been a 54 which means a problem with the cam position sensor (which could be the cause of no spark)? Do you hear the fuel pump run for about 1 second after you turn the key to the "run" position? Are you certain that you don't have spark by testing with an insulated screwdriver inserted into one of the spark caps and holding it by the handle with shaft 1/4" from the cylinder head? Let me know the answer to those questions. You can erase the old fault codes by disconnecting the battery for a few minutes. That will cause a 12 code, but ignore that and the 55. Tell me any others that show up after you crank it again.
Roland
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ROLAND, I DID THE SPARK TEST AS SUGGESTED, NO SPARK, I DO HEAR THE FUEL PUMP AND HAVE DISCONNECTED THE BATTERY AND THE SAME CODES REAPPEAR

I'll assume that the 5? was a 55. If not, then tell me what it was.
The 25 will have to be addressed (idle air control motor, which is probably a wiring issue, such as melt through of the insulation) but it shouldn't cause a no start. I am not sure what you meant by "ASD sensor" unless that was indeed the cam sensor.
I don't have the wiring diagrams for the large V-6 engine (I don't specialize in the trunk line of vehicles) but if you have no spark then I would suggest that the continuity of the wires from the the cam and crank sensor to the computer, and from the computer to the spark coil, be checked as all the parts on their own seem to have been replaced. It could be something in the electrical circuit or the ignition switch section that powers the computer/spark function. I wish I had that circuit and thus could tell you where to check the voltages. A "sharp" electrical system mechanic should be able to figure this out pretty quickly. Then once you get spark it would be good to remove and clean the idle motor from the thottle body in case it is just mucked up.

Roland