It is possible it is the TCC.
I do have a sweep dwell meter I was going to use it last night but the garage filled with exhaust so I called it quits
I have been trying to figure this out with the 84 chassis service manual, I think that's what you're talking about because it's got alot of stuff I'm still trying to figure out
That would make sense, when I bought the car it came with alot of extra parts, one of which was a tcc solenoid, hard to tell what it actually needs because the PO liked to replace alot of stuff just for the hell of it, he was dumping alot of money into it then parked it because he got busy. I'll figure out how to test that today and see if it needs it. Could that cause idle issues?
It could be, the common symptom is after at least 40 minutes of highway driving, you come to a stop and the trans appears to downshift late causing a near stall or complete stall in really bad cases.
What carb rebuild kit did you use? Cheap rebuild kits do not have correct replacement parts. Every CCC Qjet uses a main body to throttle body gasket with a large triangular air bleed hole, sometimes rebuild kits include the wrong version of this gasket that does not have the proper hole blocking idle air bypass. Found this problem on my rebuilt carb.
The computer controls the fuel mixture in the carb, and will try to offset a problem. Using a dwell meter, you can read the fuel mix solenoid dwell on the 6 cylinder scale. Normally in closed loop, the dwell should hover around 30 degrees. If it below 30, it is responding rich to offset a lean problem, above 30 is a lean command to offset a rich problem. When the solenoid is off, the mixture is rich, when the solenoid is on the mixture is lean. Normally it should be an near equal amount of time of on and off, hence 30 degrees which is half of 60 degrees, the middle.
As for idle speeds, my Chevy 305 idles at 600 rpm stock when fully warmed up in drive, idles at 1k when still cold. A Olds 307 is probably similar. Chevy and Olds used different CCC setups.
