I know the iac is supposed to control idle but am getting a check engine randomly and the car starts jerking wen am driving it, it idles fine though it only give me problems wen am drivn it and it gettin really anoying. also i already changed the iac sensor and cleaned it befor installing it, the code went away for about 3 hours of driving and it came back?? btw i have a 88 wagon with a jdm dohc zc with turbo.....im thinking of blocking the two hole where the iac goes, what will it do in that case?? thanks

 

anyone