JUST TRYING TO HAVE FUN!
I have had an ongoing problem with my 87 Grand National. One day I went out and started it up and the idle shot up to 2,500-3,000RPM and won't come down....I was told by a friend who works at Pepboys that a mechanic there said it was my IAC ...so I replaced it and that seemed to solve the problem for about a week and then the same problem was back???? So I spoke to another mechanic and he too said it was the IAC....or the chip..... when I told him I replaced both things...... he told me to disconected the wire that runs from the battery to the computer to reset the computer....and that seemed to work for about a week?? Now the problem is back.....So I disconnected the wire again and it does not solve the problem this time....I NEED HELP ON THIS ONE BAD!!! Could it be the computer itself ?? and if so how do I check that?? ANY HELP WILL BE GREATLY APPRIATED!!