Fast forward to today:
I got a call from Kia saying that it's ready to be picked up.
They said they've replaced some sensors on Banks 1 & 2, and two o2 sensors. Also the service manager said that "when you pin it, there's a rev limiter"....
Then he said what I've heard from these dealers about 30 times now: "You know, it's got an $11,000 BMW transmission". Gee, previously I was told that it had a $15,000 BMW transmission! This led me to ask whether they had really road tested the vehicle using the same techniques that we (me and their tech) had used last Monday? I believe he said "probably not".
There's a common thread in all of this, since the problems with my Kia Borrego began. And that is, that they (the dealerships) always want to try to blame the consumer first, for the problems. So, far, I've been told that:
1) You're using too high an octane of gas, and that I should ONLY use 87.
2) You're using the incorrect oil (5w30 instead of 5w20).
3) You're using too low an octane of gas (try using higher octane).
4) You're over-revving the engine (insinuating that I don't know how to drive). But wait, it's an automatic with a 6 speed $15,000 BMW tranny! How could you possibly over-rev the engine by stepping on the gas pedal?!!!
So now they want me to drive up tomorrow to get my vehicle (200 miles r/t). I told him that before I go up there, he needs to get the technician to test drive the vehicle the same way as before, to guarantee that they have indeed fixed the problem. Then, if all is okay, I will pick it up.
As a sidenote, the dealership is paying for a rental while the truck is in for repair. The rental happens to be a Kia Sedona (van). But there's only a 150 mile per day coverage. So if I go up there tomorrow and it still exhibits the same problem, I will have to drive 200 miles r/t, exceeding their daily limit.
BTW, I floored the pedal on the Sedona while merging onto I-90 and guess what, no issues with stalling.
NOTE: The speaker noise was eventually fixed by KIA in Billings (several months ago)...the ground wire was not connected to the amplifier.