Can't rev when running

[madduck]

what year is your car? how many miles? what was the last thing done to it? did the symptoms start after you refueled? is the exhaust system clogged? do you have throttle by wire? what is the engine vacuum measured at the intake manifold at idle speed?

year 2000
last thing done, replaced distributor o-ring
no, not after refuel.
don't know if the exhaust is clogged.
not sure what is throttle body by wire.
I don't know the engine vacuum