Tank Filler Pipe And Cap problems of the 2005 Nissan Maxima

My wife was driving our 2005 Nissan Maxima 3. 5 in effingham, IL. She was making a left turn off of keller drive onto west jefferson street. After the light changed, she pushed on the accelerator and the vehicle "barely" moved - than it suddenly accelerated very quickly - she thought her foot may have slipped off the accelerator. She drove five blocks and came to a stop intersection of maple street and jefferson street. After stopping she began to proceed through the intersection and the same incident occurred again. After leaving effingham she drove home to metropolis which is approximately 160 miles. I came home from work and she explained the two incidents that had occurred in effingham. I started the vehicle and in a few seconds the service engine soon light appeared. I checked the owners manual and it stated the service engine soon light may be the result of an improper fitting fuel tank cap. I checked the fuel tank cap and it appeared on correctly. I removed the fuel tank cap and reset it again as the owner manual stated. According to Nissan the light may go off after a short trip. We drove to paducah ky. And returned to metropolis - approximately a 20 mile round trip. The service engine soon light remained on. We took the vehicle, which has 51,000 miles on it to a local garage (a1 automotive). A1 tech's placed the vehicle on a diagnostic machine which indicated the code idle adaptation. A1 service personnel cleaned the throttle body and advised that if the service engine soon light returns or the same acceleration problems return than the throttle body needs replaced. The need to replace a faulty throttle body when a vehicle has 50,000 should be addressed in the Nissan owners manual. We purchased this vehicle new at centralia, IL. And we can provide all service documentation. We want to go on record and report this problem which could result in an accident.