Trios,
Holy cow bud, that was some funky stuff going on with your Corvette!!! I have never seen anything near that bad going on with a vehicle, talk about having a mind of its own! You didn't by chance name it Kit did you lol! I noticed in your video that your temp readings, on your display right below the speedo, those were jumping all over the place! Glad you got that one sorted out!!
You are correct about the injectors being mentioned a couple of times. I am pretty sure someone mentioned to me about pulling those one at a time to help isolate the miss. I just haven't gotten that far yet. Today when I discovered the new development with the alternator, its connector, and the affects on the lights I spent most of the day focused on that. I took a couple breaks to do the TC fluid and of course back and forth to the parts store swapping alternators. I kept trying to explain to them about the diodes, ripple voltage, and how AC can do bad things, I just got a confused look from the counter person. I probably shouldn't complain to much about them, they let me keep swapping new alternators!
You mentioned something about throwing codes and it got me thinking. With all of the things I have been doing to troubleshoot this thing, it hasn't kicked a single code yet. When I had the alternator unhooked.....no code, when I had the coil packs unplugged......no code, when I had the belt off checking the alternator that way......no code. The only code I have gotten was when the fuel level sender was bad. I have since replaced that AND the fuel pump. Figured with a shade over 80K miles it would be foolish not to do the fuel pump at the same time. I am leaning more and more towards the PCM being the problem, it ties into so many systems on the vehicle! I just want to do some more checking on things before I go that route. Not sure what all is involved with swapping the PCM so the first thing I wanna do is research that.
MAY03LT,
No, they didn't mention any specific code. After the service manager mentioned the voltage codes on cylinders 2 through 7 the first time, I could not get anymore info out of him about what that was about. He did say there were no codes though so it left me a little confused because he just told me the tech got voltage codes.
With the oscope you mentioned........HOLY COW, and that's for a used one!!! Yes, that is a boss tool and not something that I'm looking to get into. I don't do near enough work on cars to justify spending that kind of money on an oscope. Would it be a very nice addition to my expanding tool collection, heck yes!! I just can't justify spending the money on it right now, in the future, maybe, just not right now.
From what I have seen and read on THIS forum, it is a much better setting than the "other place"!!! It reminds me of the forum I am on for the Pontiac G8's, great group of knowledgable folks that are always willing to help! It's an odd feeling going back to noobie status oh here though lol! I bought that car new and there wasn't much that I had taken off or tweaked on that car, so I was able to help folks out a great deal with things. On here I'm "that guy" asking the noob questions lol, thankfully though, you guys have proven to be a top notch group of people and willing to help as much as possible! That in itself is what makes sites like THIS one so popular and successful!!
I am ordering the BAFX bluetooth OBD II adapter and getting the Torque Pro app for my phone. For the price and the reviews it sounds like it will be money very well spent!! The TSB for the ECM ground corrosion that the dealership says the preformed, guess what ground they worked on for an hour and a half. The small ground that attaches to the inside of the passanger front fender. They scuffed that up a little with a wire brush or something and screwed it back on, none of the other grounds were touched. Now, correct me if I'm wrong, very possible by the way lol, but isn't the ECM grounded at S108 or S109 on the lower left (driver side) of the engine block?? Neither of these grounds have been touched yet. So it really makes me wonder what $198 for the TSB went towards!! Really wished the service manager or tech was there, always funny how they seem to disappear when a customer asks somewhat intelligent questions!
Anyway, having the misfire history like you mentioned would be VERY useful info to have!! Hopefully the BAFX Elm 327 adapter will get here soon and I can start collecting that data.
Can't say it enough, thanks for the help, patience, and humor with all this folks, I'm green but learning as I go!!
Tony