bobby v
I'm Awesome
Wow... Deja vu !! I'm gonna ride along with my ears and eyes wide open..lol
Not to hijack but I too am having the same issues. Though I was also having an issue of it dying whenever I mash the throttle whether it was on the TBI itself or from the pedal. Coolant Temp sensor fixed that but still having idling problems.
At times it'll idle (in park) at 750 then suddenly ramp up to 1200-1500 then idle down to 1000. It's so sporadic it's driving me nuts.
I've switched out every possible switch/sensor, install (soldered) a few new connectors, new vacuum hoses, new EGR,reset IAC and no improvement. Even pulled and re-installed the intake thinking I had a leak there, nope.
Installed a new adjustable fuel pressure regulator..nothing
I even bought the ALDL Scan Cable program (Red Devil River) from research and thought it was a simple plug and play and that I'd get my reading and make adjustments...lol, Well I'm finding that it's not that simple or I'm totally missing something with the installation of the program.
I can see that there's a wealth of knowledge here and I'd even pay one to resolve this. Wish one here was my neighbor...lol Harder to fix via the net vs seeing and hearing in person.
I hear ya on no one around to help cause Im still going thru the same as you, and done just about the same with no fix, still idles high. At start up its fine but then it starts to climb and stays there, goes from 750rpms to 1000rpms.
My closest help is TBI, desert old guy who sounds like he knows his stuff but he's like hundreds of miles away
Bobby V