Well that is good to know. IÆve noticed basically the same thing.

And IÆve been thinking about the problem.

I think my only issue is the computer advancing the timing when it shouldnÆt. That would explain how I set the ignition timing low the first time. If it was just sitting on advance and I set it to 12 BTDC then when it eventually let the timing advance back down it would have been low.

And from what I can surmise, every now and then it doses the same thing.

So to cause. Since IÆve pretty much ruled out everything else (vacuum related) it would pretty much have to be the TPS in some way acting up. Right? From what IÆve been reading thatÆs the only thing that lets the ignition timing advance. ???

One thing I noticed was that when I manually pulled the throttle cable and letting it snap back down sometimes it wouldnÆt go to the stop. So I let abit of pre load off of it by adjusting the little nut/ slider plate thing that holds the throttle cable to the throttle body.

And it seamed helpà

If the ignition advance sticks in the high position again IÆll change out the TPS with a spare I have and see what that dose.