
We bought our 04 KIA sedona LX last March. Few months later-summer time- I started to hear this noise(running between 30-45 miles), a loud humming sound with vibration under the engine area; it can also be heard and felt at the backseat area. The problem is that it happens randomly.When I brought it to the Kia service, I told them that it happens randomly. But they told me they cannot do the repair unless they see/ hear it themselves.
Observations:
a. My Sedona van seems to run better with 87 octane Chevron gas with Techron . Before I was using Exxon 87 octane.
b. The tires are not good; very dangerous on puddles.
c. I find the light/turn signal control short.
d. Paint finish on bumpers is not good( peels off easily). Be careful when using 'pressure wash'.