i just bought a 99 kia sportage and have the 4wd shift lever instead of the push button now do the same vacume problems happen with this type? I have the auto hubs and wouldnt mind going to manual. Okay i can put the lever into 4wd while sitting still and in nuetral (its a 5 speed) but can not shift on the fly. im a jeep guy and tryed all my tricks and still cant get it if anyone could help let me know thanks