that's what my mechanic did. and I'm tempted to do it again myself.
throttle body, IAC, fuel injectors, valves, everything got treated and cleaned. and still the problem persisted. I'm going to go with three tanks of 89, and see if I still have a problem. If I still do, then I'll go down to 87 for three tanks, and if that doesn't do it then i'm cleaning my throttle body myself, getting a new airfilter (which I don't need, but i'll do anyway), and clean the inside of my stock Intake
, and if that doesn't work, i'll do a 3S-GTE swap
if after three tanks of 89 I don't have a problem, I'll go back to 91 for three tanks. If it doesn't come back, then...
I have tried 91 from different stations without any change. I might consider a 4th tank of 89 from a different station too. Does anyone think this is a distinct possibility, that my gas could be causing my problems, or am I just wasting my time?
BTW: GT drivers, I'm noticing no difference between 89 and 91