Engine Clicking And Tapping Noises Problems of Lincoln Aviator

My SUV misfires, slips in and out of gears, stalls at stop signs and lights, accelerates at stop lights. Occasionally when the ac is turned on, there is a very loud clunk sound.

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The contact owns a 2004 Lincoln Aviator. The contact was driving approximately 30 mph, approaching a complete stop. While the brakes were engaged the vehicle accelerated toward the oncoming traffic. The brakes were applied repeatedly allowing the vehicle to come to a complete stop. The contact was able to continue normal operation. The failure occurred on three different occasions. The vehicle was taken to an authorized dealer on three separate occasions for the identical failure and the technician was unable to duplicate the failure. Also, the vehicle was taken to an independent mechanic on two different occasions for the acceleration failure which there was no resolutions. In addition, there were intermittent failures with the engine misfiring and revving without warning. Also, the engine stalled when at a complete stop on numerous occasions; and a loud clunking noise would occur during the activation of the air conditioner. Recently, the anti-lock brake system warning light illuminated intermittently. The total repairs on the vehicle consisted of the cylinoid joints replacement; and an update of the computerized system software. The technician informed the contact that the transmission was defective. There had been no additional repairs performed on the vehicle at the time of the complaint. The failure mileage was 8,000.