This basically describes my current problems (besides the loud buzzing noise at 3800 RPMs)...

I hear the TPS can cause the first problem, although it's almost entirely in spec, and already adjusted (the only thing slightly out of spec at idle, which is .09 kOhms too high), or the fuel not getting shut off.

Also, I noticed that the dashpot looks like it was almost entirely pushed in... with less than a millimeter actually dampening the throttle. That can't be normal...

And the high-throttle hesistation is still accompanied by loud clicking noises (injectors maybe?... or something inside the engine, like apex seals?).

Seems like every time I add or clean a ground, it lets me use a little more throttle before it starts hesitating, though, so maybe it's an electrical problem. Is there a way to check whether the injectors are getting voltage through the harness? I'm pretty sure the ignition system is working right, as far as I can tell.

 

i have a similar problem and i can't figure it out..GRR!

 

and i just changed the plugs,cables,fuel filter and is still doing it but not as bad. maybe i need the injectors clean or something..

 

This problem was caused by the timing being way too advanced... restab your CAS.