WWDiesel wrote:
Keep us posted as to outcome!
Well, since you asked...
Ended up taking care of a couple of things, as it turned out.
First: popped the hood and noticed that I had a brain fart and did too thorough of a job installing the thermostat - the plug to the MAF sensor was reconnected. Yanked that one as soon as I spotted it. All I can figure is that I was a little too attentive to detail during reassembly.
Second: pulled the MAP sensor and cleaned it. On the plus side, it wasn't as grody as it was the first time I did this, but it was pretty oil-soaked. The real fix for this will be a Provent, so for now I'll just live with cleaning it every few weeks until that happens. There's no point in replacing it until the Provent is in, but I will toss a new one in at that time just to be sure.
Went to the further of the two diesel stations I fill up at around here, topped off, and headed back. Throttle response was noticeably improved (go figure), but on the 40-50mph roads between here and there, average fuel economy was 24.9mpg when I got back to the house. Granted, that's only over a 4.5-mile distance, but it's a definite improvement.
We're taking the KJ on a roughly 200-mile geocaching round trip tomorrow, so I'll have a better idea of where things sit after that. Based on what I've seen right now, though, there should be some significant improvements.
WWDiesel, thanks for the reminder on the MAP sensor. I'd meant to clean it last weekend when I was in there doing the thermostat, but completely blanked on it.