AT Problem

2003 KIA CARNIVAL
150,000 MILES
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JIMMY_KELLER25
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I have problem in AUTO TRANSMISSION with my Kia Carnival 2003, when i start the car the trans works properly and gears shift smoothly but when speed up to 30 KMPH the gears slips and stuck. When i stop at the signal or drive long way its not shifting the gear nor its shifting back to start.

Please help.
May 2, 2012 at 8:44 AM
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FIXITMR
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any dash warning/problem lights on?
May 2, 2012 at 8:59 AM
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FIXITMR
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fluid level ok? possibly heat is effecting trans solenoids function.
May 2, 2012 at 9:00 AM
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FIXITMR
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also speed sensor input to ecm could be failing so trans is confused as to what to do.
May 2, 2012 at 9:07 AM
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JIMMY_KELLER25
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No Dash Warning
Fluid Changed with proper Level
Speed Sensor not yet checked. dont know the location for it, if you could tell then good.
May 2, 2012 at 9:10 AM
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JIMMY_KELLER25
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when trans stuck it is in 4-5 gear then it remains in it untill i switch off the car and restart.
May 2, 2012 at 9:15 AM
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FIXITMR
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sounds like an OD problem. funny no warning lights showing? try reading codes?
May 3, 2012 at 3:27 AM