Owners/service Manual problems of the 2006 Ford Focus

While traveling on the nys thruway my car began to accelerate on its own. I took my foot off the gas petal & it began going faster. At 85 miles per hour I pressed the brake petal & shifted the car into neutral (5 speed manual). The gas petal fell to the floor. I eventually got over to the shoulder but the car was revving extremely high. I immediately turned the car off. I waited a few minutes,started it up again & it still was revving very high. I removed the floor mat & inspected the gas petal, there was no interference. I pushed on the gas petal several times. It now had some pressure but was a bit sticky feeling like it was catching. When I started the car up again, it ran normally. I got off at the next exit & drove it home. While driving home it began accelerating on it's own again. I had to use the break petal several times to keep my speed down. I took it into the repair shop & the mechanic could not find any problem. The car ran fine for about a week but then while at stop signs/traffic lights it would begin cutting out & dying. I had to put the car in neutral, have one foot on the brake & pump the gas petal to keep the car running. While in traffic it would die on me. I took it to the repair shop again. The car was running fine by the time I got to the shop. The mechanic cleaned the throttle body & the iyak was replaced. Minor carbon deposits were found but not enough that should cause a problem. The car is still running with the intermittent unintentional acceleration/high revving then lack of power/rough running. These situations are very scary because I never know when it will begin accelerating, revving/cutting out & having no acceleration. . . Even when the petal is to the floor. My mechanic contacted our local Ford dealership (all american Ford) and they denied that there have been any issues like this. However, when I research online, I find many.

Rear drivers side door will not lock. Not with the key remote or manually. Children in the back seat can open door any time.