Chrysler Repair: Code 1391: cam or crankshaft position sensor, crankshaft position sensor, oxygen sensors

Question
QUESTION: i have a 2001 sebring , had water pump replaced , had to take off valve covers and intake , but got that fixed and then key test said sensors were bad , replaced both , but catalytic converter got red hot , fixed them , started car got to temp and said sensors were bad again

ANSWER: Hi Leonard,
Are you sure the cam and crank sensors were bad, or was it the heated oxygen sensors that I might believe an overheat would cause as you described? What are the fault code numbers?
I wonder if the valve timing is correct if you are getting such an overheated converter. I would check that first.
Roland
PS Tell me which engine you have if you send a follow-up question.

---------- FOLLOW-UP ----------

QUESTION: well the code was 1391 and the book says intermittent loss of cmp or ckp , the engine is 2.7 , and the timing chain was conected to the water pump , but he lined the dots and and chain to the book , when the car is cold runs great , when the car gets to temp idles terrible

Answer
Hi Leonard,
When you replaced the sensors did you push them in until the paper-spacer covered tips touched the surface of the sprockets and hold them in contact while you secured the screws? If not, then you may not have them in the proper location relative to the surfaces. I would get new paper spacers and then reinstall them. Other than that it could be the wiring. The common ground wire (black/light blue) goes to pin 43 at the pcm, while the cam sensor signal (tan/yellow) goes to pin 33 and the crank sensor (gray/black) goes to pin 32. The orange wire on both sensors carries 8v from pin 44. So check those wires for continuity (shake the harness to detect intermittency) and also verify that the 8v supply is steady.
Keep checking for new fault codes as well for it could be a diffferent issue. Did you disconnect the battery after replacing the sensors so as to erase the old code?
Other than those ideas, about the only other way to find out about intermittent signals is to observe the wires with an oscilloscope while the engine is running.
Roland
PS Please 'rate' my answer. Thanks