Well, filled it up with gas this morning. The first tank worked out to 16 mpg, but there was a LOT of idling and then the issue with the IAC valve.
Anyway, headed out for Beaufort, SC and ran it down 95. I ran mostly 70mph, but sometimes 75 for a little bit. 70mph is somewhere around 3100 rpm. I haven't measured the tires, but math says they're 26.25" tall and I used 26" even for my equation.
Made it all the way to Beaufort and filled up at my favorite Parker's just before you get to the hotel. Get this, 20.5 mpg! That's not too bad for what it is.
I also got fed up with the craptastic Gates belts I got from RockAuto and went to Advance and got some new Daycos. I think the ones I got were basically V shaped rubber bands. I tightened them yesterday for the fourth time and after I filled up with gas, they squalled and hollered and made racket for a solid 5 minutes. I could stretch them by hand. New belts, problem solved. It's like comparing canvas Cahartt jeans to yoga pants. Yall get the picture. Stretchy vs rugged and stiff.
I even got a few looks on the road for my sweet paint finish and likely because I was only going 70. It did good though. Coolant temp and oil pressure were solid.
I did get a paper clip and read the codes though. It's the old school blinky thing. It does 1, then 2 blinks a total of 3 times to signify it's starting the process. Then you'll get something like 3, a pause, and then 5. That tells you it's a code 35. Sorta simple and it shows each code 3 times. At the end it does 1, pause, 2 again to tell you it's done.
Here's the results...I think.
Codes:
15 - coolant sensor, low temp
21 - TPS error, high voltage
35 - IAC problem/idle error
44 - O2, lean condition
25 - IAT sensor, high temp
33 - MAP, high voltage low vac
I'm going to try to reset the ECM and go from there. It has a new IAC and it did have a decent vacuum leak for a while. I'm thinking I'll do the carb cleaner vacuum leak test just to check. I also think they could all very well be related. We'll see how it plays out.
Anyway, here it is 370 miles later in the hotel parking lot. I'll probably give it another coat of Penetrol tomorrow and then wipe it down with a dry rag. Hopefully it'll even out and look even better.
FWIW, the 4.8 swap with a T56 and a bolt-in S10 8.5 "Big Ten" is very prevalent in my mind. The kicker being the price of a T56. It'll be the most costly part of the swap, but keeping a 3.42 gear, these same tires, and the double OD (6th gear is .63!)...this thing will be a damn good cruiser if it ever happens. 1950 rpm at 70mph will get some killer mileage!