Hello everyone , new to forum and saw this and was wondering if anyone might have any suggestions. My 2003 Ford Taurus is stalling out to. So far they have replaced all 4 oxygen sensors. The vacuum hose has been replaced too. All fluids and plugs have been checked also. The check engine light is still on and when you are still for a long red light it will stall out. It also will die if left in park and running the ac seems to make problem worse. The 1st diagnostic came back that the 1 oxygen sensor was bad so replaced that one and seemed fine for a day then engine light came back on and started to stall again. The next test showed 2nd sensor was bad so replaced those 2. Now light is still on and still stalls out but last two diagnostics came back normal????????? Please help, I'm at my wits end and Ford says they can find nothing wrong. | 
