I have a 1996 dx that i swapped a 1998 ex head onto. The wiring is done correctly i believe, i am throwing codes for evap and one for the iac but i replaced the iac. my real problem is the at 1500rpm and only at 1500rpm if you rev it and hold it there the motor idle surges 500rpm. i drove the car for 3 months like that but now its been sitting and i was wondering if anyone has heard of a similar problem? thanks guys