[nhockett]

Two months ago and 4 thousand miles ago I replaced the idle speed control after it was diagnosed by the dealership as bad. Nearly all of the miles I have put on the engine were interstate. Now the damn thing is reving only in nuetral from approximately 1000 to 1500 rpms. I have been told it is the computer making this thing go bad along with a couple other less likely explanations. I have a datalogger and I understand that I should be able to see if a sensor is going bad. The program says MMCd on my palm pilot. I cannot seem to figure out how to test this sensor. Does both the computer and isc need replaced, just isc, or could it be something else. This type of bs is common with my car so it could very well be something very unlikely. Thanks in advance!

Nate