ok so i have a big problem. My car dies/chokes if i give it any gas under 2000 rpms. but if i rev my clutch over 2000 rpms to take off and keep the rpms above it, it drives okay.

its like that in every gear. it mis fires and bogs out under 2000rpms

what is the problem here? I tried cleaning my iacv

its also idling a little high around 1500rpms

the car is a 98 civic dx with a d16y7 the motor was from an automatic, and the car is a manual. Im getting no codes except for the IAT for which i am changing the plug for tomorrow

 

Has the timing belt been replaced within the ~100K recommended interval?

First fix the CEL code indicating an IAT sensor problem. If the issue persists afterward, then check the ignition timing:

 

ok so i unplugged the evap purge solenoids electrical connection. now i can drive my car with no spits and sputters, but it idles up and down up and down up and down. cruising it seems it never even goes under 2000 rpms unless im at idle. its like cruise control lol.

the idle sounds as if i have a huge race cam.

 

Did disconnecting the EVAP solenoid throw an EVAP CEL code?

Regarding hunting idle, check for a vacuum leak or intake air leak. Also check whether the throttle cable may be too tight. Finally, check whether the coolant level is low in the radiator and then bleed the cooling system of possible trapped. You may have introduced bubbles when you cleaned the IACV.