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I have a 1997 KIA SPORTAGE auto 180 000 ks in mint condition except for the fact that the gear box does not go into top gear untill it has done at least 5ks or the temp gauge reads about a quarter after that it changes into top gear normally.
I have had the codes checked and they are normal can any one help
 

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2000 Sportage EX 4x4 A/T, 2008 Harley Davidson Nightrain
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IIRC, the ECU locks out 4th gear until the engine has warmed up to about 95*F. It's a feature to help the engine warm up faster in cold weather. Mine does it for about 2/3 of a mile now that it's pretty cold in the mornings.

If it's taking forever to warm up enough to shift to 4th, it may be time to change the thermostat and/or coolant temp sensor. Just changed out my thermostat and it made a big difference on how quickly it warms up now.
 
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