hi every on first time on the forum. need some advice for my sedona 2002 2.9 the engine runs fine but not revving past 3000 rpm and that would make gears change very dificult . had the hooked on the kia main dealer computer and no fault was found and no engine light on at all plus the engine keeps running fine even with the MAF unplugged. some body might have sorted this problem before please help me i'm really stuck and do not know what to do with it . thanks a lot for your response