Question about 2006 Kia Sorento

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My Kia Sorento won't gear down and accelerate when I floor it. Dealer says it's a sensor in the transmission and they need to drop the transmission ($400 labor) to replace the sensor. I have a feeling that it is an electronic problem as the problem seems to come and go. Disconnecting and reconnecting battery leads seem to resolve problem for a while but it always comes back.

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  • Doug May 16, 2009

    when travling down the freeway the kia would not up shift put it did go through all its gears


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TPS of Throttle Position Sensor needed adjusting and is the problem and not the gearbox.

This usually happens when the engine light comes on and the TPS is adjusted but most dealers forget (or maybe intentionally) to reset the gearbox P/TRN Fuse.

Whenever the engine light comes on the gearbox is set to run in Sick Slow mode which is why you have this problem.

Before doing anything, try pulling the P/TRN fuse for 5 mins and put it back. Then try the car.

Hope it works, i did for me.

Posted on Apr 14, 2009

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When cold it takes two trys to start it. after it starts it will stall on first accelleration. This all starten when the throttle position sensor was replaced. New battery drains in seven hours while parked.

Posted on May 07, 2009

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