Cruise Control problems of the 2003 Nissan Murano

First incident: "slip", "vdc off", and "service engine soon" lights all came on simultaneously as car jerked/hesitated in hov lane of westbound I-66. Car remained running with "slip", "vdc off", and "service engine soon" lights remaining on the rest of the trip home. Second incident (01/30/2011): "service engine soon" light already on. As stop light turned green and began to accelerate from complete stop, "slip" and "vdc off" lights came on and car stalled in the road way. Was able to restart car with some difficulty in middle of the road and continued on. Third incident: "service engine soon" light already on. Car stalled turning into owner driveway, with "slip" and "vdc off" lights coming on. Was able to restart car with some difficulty and pull into driveway. Nissan dealer service department found code p0340: "b1 cam sensor failure". Fp-number: 23731-69j0b. Sensor assembly replaced 02/03/2011. 2nd code p1564: "replace cruise control".

I continue to have episodic loss of power with my 03 Murano. All instances occur after driving at interstate speed for more than 30 minutes at a rate of between 65 -80 mph during times of high heat (100 degrees+). The first incident occurred in June 2010 while driving from phoenix to flagstaff. Going up a long incline, I noticed that my speed was declining (I was using cruise control). Pushing on the accelerator - no response. The car continued to decelerate on it's own as I struggled to both change lines to get to the nonexistent shoulder of the road and avoid getting hit by the semitrucks. Turned off the car for 30 minutes and waited. Turned it back on and the car ran. I have since not used cruise control. They could find nothing wrong; car did same thing immediately after, drove it back to the shop - they could not replicate it! June 2011 - driving from la to phoenix, 105 degrees and 2 hours in to the trip, the car does the same thing. Pulled off the road, waited. Tried again; could go 10 miles before the car began losing power. Towed to a dealer - who could not reproduce the incident. April 2012 - driving from tucson to phoenix; 105 degrees and 72 miles into the trip. Loss of power on the interstate; 1 hr of waiting, and power returns, but I did not trust this car to get me home (nor did I want to be stalled in the middle of an az desert waiting for a tow truck. ) towed to a different Nissan dealer. I have had this car in and had many things done and replaced - the cam sensor, transmission fluid, etc. No one can figure this out and more frustrating is that not one mechanic can replicate this loss of power/lack of response to the accelerator.