Chrysler Repair: 00 Sebring JXi Conv Runs poorly - Stumbles under acceleration, crank sensor, cam sensor

Question
My 2000 Sebring JXi convertible has started to run poorly under acceleration or any load at all.  The cars tuns fine at idle, but under a load it acts as if it had half a tank of water and surges to the point of breaking things.  When it started I assumed it was the crank position sensor, took it to a shop, they found that during the drive to them, it had jumped time and had set codes for the crank position sensor (and possibly cam sensor - distributor). Both had been replaced approximately six months prior to this. After replacing the timing components, water pump, crank sensor, the car started the same problem the next day. I returned the care 3 more times in which the crank sensor and distributor were replaced and each time - same problem anywhere from 30 miles to 100 after getting it back.  I replaced the PCM about 2 years ago for an A/C fan problem also.  I took it to another mechanic and after he kept it 6 weeks and no result, I decided I would try to fix it again.
Where do I start?  I know it has set the crank and cam sensor codes again, but as these parts have just been replaced numerous times, I don't believe they are the culprit any longer.
Thanks for your help
Mike

Answer
Hi Mike,
I assume that the codes are 0320 and 0340 correct? Any others? Let me think about it, but let me know if there are any other codes, in the meantime. Send me a follow-up if there are others. You can do the ignition key routine to get the codes on the odometer window: on-off-on-off-on and leave on" doing that in 5 seconds or less elapsed time.
If both sensor codes are 'fresh', and no other codes, then you might look at what is common between them which is the 8v sensor supply to the sensors and the common grounds for the sensors. The 8v supply wire is orange at the sensor and comes from pin 44 at the pcm where it is orange/white in color; and the ground wires are black/light blue and come from pin 43 at the pcm. The wires from both sensors go thru a common disconnect with 10 pins located at the rear of the pcm. You might look at the disconnect and also try measuring the continuities of the two leads from both of the sensors to the respective pins at the pcm while shaking the harness to see if you can possibly show a flaky connection in either of the pairs. That is about the only 'common mode' type of failure that I can see would cause both sensors to go out as you describe.
If there are no fresh codes, or even if there are,  then you might try cleaning out the throat of the throttle body and both sides of the butterfly plate. Also check the 'action' of pcv valve which may be sticky and not closing all the way, which it needs to do when you step on the gas or it will be too lean of a mixture.
Roland