KIA Sedona making whining/groaning noises at idle but mostly only when cold out

[MV4S]

@Destinyplayer, @MV4S, did either of you get yours working? My 2016 Sedona SXL has had this exact same issue for a couple years now. Our warranty is through the dealership we bought it from, but they aren't a KIA dealership, and haven't been able to figure out the issue so far. The other things I find online are all about the timing chain rattle, which I don't think is what this is. Here is a recording of the issue I'm experiencing. I should get a recording of what it sounds like from the engine bay, but we're always rushing off somewhere when we experience it.

I haven't addressed my issue yet. I do notice that the groaning/whining noises get better when the weather warms up even for a day. This is the reason I think the issue likely has something to do with degrading/hardened rubber on the transmission mount. I do not hear rattling noises like yours.

 

[DragonKing]

I haven't addressed my issue yet. I do notice that the groaning/whining noises get better when the weather warms up even for a day. This is the reason I think the issue likely has something to do with degrading/hardened rubber on the transmission mount. I do not hear rattling noises like yours.

Maybe I have more than one issue.

 

[JerseyMikw47]

That’s pretty much how it started for me last fall. The front drivers side started getting a little klunky going over bumps then I started hearing an odd noise for a second or two when making a sharp left turn or driving over bumps and dips in the road when the front of the van drops a bit. Then I started driving around with the radio off trying to figure that noise out and noticed all the noise/vibrations at idle when it got colder out.

At first I thought it was the engine/transmission mounts because I found the posts of others having the same noises and that’s what the problem was. But the first mechanic said he was pretty sure it was a combination of transmission whine and loud/weak struts/strut mounts. The second mechanic said he didn’t really hear anything that sounded like the transmission mount or the strut and that the struts don’t seem that bad, at least when it’s warmer out.

I was going to replace the struts since they probably need replaced soon anyway and see if that helped, but there don’t seem to be any decent aftermarket struts available for the 2015+ model. The dealer wants a small fortune to just replace the shock part and swap all the other parts over. Plus a couple hundred more to just replace the mounts to make sure that isn’t the problem.

Think I’m going to start with replacing the transmission mount and see if that helps then go from there.

I know this is an old thread, but I am experiencing the same exact symptoms and I was curious if you had ever come up with a solution. I noticed there are two transmission mounts one on the left side by the fender and one underneath shaped like a wishbone. Which one of those were you considering replacing?