if the car has been sitting for more than about two hours i have to crank it twice, but it starts up great the second time. it idles around 1250rpm and i have tried to adjust the tps but it does not change anything. sometimes when driving if i come to a stop and let it idle in neutral (its a 5spd) the engine will just randomly stall, but most of the time it will idle fine at 1250. i pulled the IAC and it is dirty but seems to be ok and is adjusted correctly.

so i'm thinking this might be an IAC, TPS, or Fuel Pressure Regulator problem but i'm not sure.. please help! its runs fine otherwise, just crappy at idle

 

Check youre fuelpressure.
Measure youre injectors.
Check for vacuumleak.
Check youre value at TPS
Clean out youre IAC and adjust it.

Get back with info about that