The 4.6 in question is in a late '93 Crown Vic, ('94 firing order), but here goes. I removed the intake manifold, replaced that water pump hose that runs under the intake (who thought up that one) replaced the manifold gaskets and put it back together. When I fired it up it dies immediately. After checking the maf, firing order, looked for vacuum leaks, I discovered if I place a shim between the linkage and the throttle body, the car will keep running. So my conclusion is the IAC valve. The question is this, is there a simple way to test this without replacing it? The car is not mine, and my buddy is trying to find the cheapest way around this. The car ran relatively well before the hose blew, but it seems strange to me that it would develop this situation during it's down time. The project has been a 6 week one since either I didn't have the time or he didn't have the money to move forward. Any ideas? Oh the CEL is burned out, but I reset the computer with no results. I took this on as practice for when, if my plastic manifold goes on my bird, but boy I'm ready to wrap this one up.