Transmission Not Engage Problems of Kia Motor Sportage

While driving at a steady speed, car will suddenly disengage the transmission, the rpms will rev high and then transmission will re-engage. This usually lasts 20-30 seconds, it is very random. I have taken it in and because no codes are showing and they are unable to recreate there is nothing they can do. It is a very serious issue as if I'm driving in heavy traffic and this occurs it could result in a crash. It happens sporadically and cannot document anything as it is over before I can as I am driving when it happens.

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Transmission will suddenly disengage and engine will accelerate to 4500 rpm or higher. This happens while driving mostly when vehicle is between 25 and 45 mph. This happens several times a month. This has caused vehicle to pause when switching lanes, almost causing an accident. This has happened multiple times over the last year.

Air conditioning / heat system leaks air onto front windshield causing fog on the inside/outside of front glass. Transmission does not engage full time while in motion. While driving forward, the engine will race and the transmission will become disengaged, within 20-90 seconds the transmission re-engages and you can proceed. This happens sometime while you are entering a highway from an on ramp as you accelerate into moving traffic. The transmission was replaced with a remanufactured transmission less than 6 months ago and the vehicle is starting, to show these same symptoms again. It happened while on 1-95 in the alexandria area of virginia, route 66 south, route 29 expressway in lynchburg, va just last week. I have brought this to the attention of the dealership and the manufacturer without action. This malfunction is a threat to the safety of the driver and occupants as well as other vehicles on the highway. Without the ability to maintain control of the vehicle it is possible to cause an accident.