i have a 94 honda civic EX that when in neutral the rpm gauge will jump from 1000 to 3000 repeatedly and wont stop, also when the car is in gear and i stop for a red light or whatever the car will surge and pulse. i have gotten numerous diagnosis for this problem, but none have worked, i have checked my MAP sensor, oxygen sensor, i have cleaned my idle control valve to no avail, this problem is seriously pissing me off and im really frustrated that no one can determine the problem, any suggestions would be much appreciated