Chrysler Repair: 1997 chrysler t&c: engine stalls/no spark, pulley bolt, crank pulley

Question
engine has been stalling out periodically over the last year. It started out only every month or two it would stall out and start back up and run fine for another three weeks or so then do it again,over the last couple of months its gotten progressively worst.once it shot a code that cam position sensor failure,made allot of sense,right?..well changed cam and crank position sensors and still have problem.then i started to think,it has to be a heat problem some where? I thought.so i started to think out of the box,older relays fail under treasure and heat so i looked at fuel and auto shutdown relays and hit a dead end.then went back to basics since i could now anticipate the failure now every 15 to 20 min and will not start back up for 10 to 15 min i have time to check vital and found no spark from the coil during failure and said to myself how could i have missed this.so after new coil installed i was confident that the trouble was over it failed again,,,, and back to the drawing board,after further checking found that ground  being fired from the pcm was not present at time of failure but power was at the coil plug. so my question to you is do you think it could be the pcm failing after it get hot?....thank you for your time on this and ill be grateful for an answer,it is the only vehicle we have and need to get it back on the road.thanks..........Marc.

Answer
Hi Marc,
What are the codes showing? I think you can get it via the ignition key and the check engine light flash counting.
What you now describe (no spark) still sounds like the cam or crank sensor, because those begin to fail in just the way you describe.
When it is in the failed mode, try measuring whether both sensors show pulsing when you turn the engine over by hand using the crank pulley bolt and a ratchet, and the ignition 'on' of course. Measure between the tan/yellow (cam) or the gray/black wire (crank) signal wire and the signal ground wire (black/light blue), at each sensor. The wires can be probed at pins 33, 32, and 43 respectively at the pcm plugs for greater accessibiity. You should see it pulse between 5 and 0.3V several times per revolution if the sensor is doing its job. Otherwise, it could be an intermittent wiring of either sensor to the pcm sort of problem. The third (orange) wire at each sensor should show 8v which comes out of pin 44. So verify what is going on when you can't get it to start.
Roland