VonoreTn

I got them out, after soaking the top of the thread area with PB blaster for 2 hours. The gap range is from .054 to .057", a little above the spec. of .049-.053". The new NGK LTR5GP plugs are all at .042" gap. I guess I have to open them up to .049. Apparently you can run your plugs for a long time these days.

I am 95% confident that the wrench light and code P2112 (throttle body sticking shut) is fixed. I drove the same 40 miles today that I drove yesterday where I got 3 wrench lights and loss of power events, and I got nothing today, and the code P2112 has completely cleared for the first time in the last week and a half. The only thing I did was thoroughly clean the throttle body, which was coated with a hard approximately 1/2 a millimeter of carbon. Be sure to clean the edge of the throttle plate good also, as that is what sticks. So far I have not spent a penny on this fix, just some labor. It has a fairly heavy spring holding it a position about 4 degrees from shut, so blocking it open with a small cube of wood about 2 cm high is helpful. You do not have to take the gear/motor drive cover off as I did, I just wanted to check the motor contacts, which were fine. This is the first such cleaning at 112,900 miles, and 6 years.
 

You may be right, I may be right, it's not important which of us is right. But I can remember in the mid 1950's, the yearly death rate in the US was 56,000. Today there are 3 times as many cars on the road and the death toll is 32,000. Seven big factors to lower that number were: 1) better highways. 2) seat belts 3) anti-lockup braking systems and disc brakes 4) a national crack down on DUI's, higher penalties, more awareness. 5) Airbags, estimated at 750 lives a year saved. 6) crash structural standards of collapse for all vehicles, 7). sophisticated containment of fuel in an accident, etc. I'm just saying that accident avoidance systems including radar braking and steering maneuvers would have a huge impact on fatal crashes, and is the obvious next step. The National Transportation Safety Board agrees with me, note my comment at the same site:
http://www.edmunds.com/car-news/collision-avoidance-systems-should-be-standard-on-new-passenger-vehicles-says-ntsb.html
 
For good drivers like yourself, it may make very little difference, and may only be an annoying higher cost. I'm not worried about drivers like you, I worried about the people I see behind me in my mirror, following too close with a phone wedged against their ear.

Feedback, I am now just under 64,000 miles, the engine light is still out and I never did anything but disconnect the front O2 sensor and reconnect it. I'm not going to buy anymore of that 100% gas from that particular station, since I am thinking the light might have had something to do with that gas. The light came on shortly after I filled the tank at that station. It is a small gas station with the old non-computerized pumps which is a little scary. When I filled up there I was at 62824 miles, now I am at 63957. My mileage is still good at just over 40 average. I have BP regular, 10% ethanol gas back in the tank. So far I have had both the wrench light and the Service Engine Soon lights come on, and then go off by themselves, at different times, but once they went off, they have stayed off. I did add just a little bit of coolant on the passenger side coolant tank which was just a little low. I haven't spent any money on the car except for maintenance yet.
 
I'm not so sure about this recommended 10,000 miles between oil changes as I did have to add half a quart of oil at 8,000 miles after the last oil change.