So I just bought a 2000 gt convertible. Was told it has a blue chip in it. Service engine light is on. Codes that came back are vacuum codes and all 4 o2 sensor codes. I also noticed last night that if I let the car sit at idol and turn on the a/c it will stall. Runs and idols fine with a/c off. Any thoughts?
Mine is doing the same thing, and I get horrible gas mileage.. Does anyone know how to fix it?
If it's a vac leak, find it and fix it. To find it pop the hood while engine is on, and listen. If it's bad enough you should be able to hear it at idle. If not try having another poison rev it up a little while you listen.