any suggestions on the best way to track down a vacuum leak? Can't get my iac numbers below 80 and my fuel pressure doesn't change a bit when vacuum line is connected to it or not. So I am guessing I have one.
If there's suction on the hose for the FPR and you don't see a drop in pressure you have a fuel system problem. If there's no suction at idle I'd be checking the soft hoses on both side of that hard line.