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2002 Kia Sedona third gear problem. Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Transmission Problems Redwood Carl New User Jul 27, 2011, 9:32 AM Post #1 of 3 (7155 views) 2002 Kia Sedona third gear problem. Sign In I have a 2002 Kia Sedona Mini Van. I have read about problems with the speed sensor causing the car to force into 3rd(?) gear. I seemed to be having this problem intermittantly. I got the speed sensor replaced, and thought it was fixed but about two weeks later(Sometimes it was a few weeks between these events before getting replaced) it happened again. Now it happens every time I drive my car. Okay now to the info that may help me get an answer. It happens in roughly the same spot, on the way to work, every day. It also happens in roughly the same spot on my way home. My commute to work is flat, so no incline/declines. I started noticing this happening and decided to look at my engine temperature, and guess when it would happen when driving to other locations(not knowing exactly where due to geography) and I can call it to within a minute or so. Once my temps go above the first line, it goes clunk and drops me into 3rd(?). Does anyone have an idea what the problem could be? I am thinking it could be the cable over heating and causing some sort of short. Is that plausible? Or could it be that the computer is just messed up? EDITED TO ADD CAR SPECS: 3.5L V6 engine Automatic transmission (This post was edited by Redwood Carl on Jul 27, 2011, 9:35 AM) Discretesignals Ultimate Carjunky / Moderator Jul 27, 2011, 6:01 PM Post #2 of 3 (7133 views) Re: 2002 Kia Sedona third gear problem. Sign In One of the default gears is third. If the transaxle is defaulting, there should be a trouble code(s) stored. Getting that code(s) may point you in a direction for diagnoses. It's possible the problem could be temperature related. Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved. Redwood Carl New User Jul 28, 2011, 8:34 AM Post #3 of 3 (7124 views) Re: 2002 Kia Sedona third gear problem. Sign In My mechanic said it was a bad speed sensor and replaced it. I'll take it back and see what they say.   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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