Originally it would give me all these problems, but it would also stall under 2k rpms. While trying to diagnose I noticed that removing the air intake connection at throttle body got rid of the stalling. But all the other problems persisted. Had to keep it at slightly above 2k rpms just to drive it around the block. Had to keep it steady. So i've basically ruled out fuel problems because gum out plus new fuel filter did absolutely nothing. I'm thinking maybe a sensor? Tried unplugging the MAF. No difference. Maybe the IAC? An added notable fact is that before this all happened I had a SLIGHT rough idle once and awhile and slight hesitation at random speeds but i replaced the spark wires and it ran great for two weeks. And then all of this happened
Read more: Ford 1999 zx2. Rough idle. Sputtering over 2k rpms. Check engine light. 25 mph limit and better with disconnected air intake
