2003 was 5 years agohoweverthatreally doesn't means anything, how many miles on the car?[/align][/align]The Fuego is not a bad tuner; I had one, my brother uses it now on his '99 GT. [/align][/align]It is howevergrossly misrepresented by Granatelli and that pompous *** that runs it, "JR". It does not do data logging, does not have any PC interface software, and obviously because of that does not have "Tunes available over the internet". But, it is not a bad tuner...[/align][/align]Back to the main issue, what were the specific codes returned when the SES light was on? What selections did you make when you created the Fuego tune, I haven't used it for a while however a few "memory jogs" might let me help.[/align][/align]And by all means check for leaks, there's nothing about the rear O2 sensors that would cause the engine to run lean, or the PCM to think it's running lean. They are only used to monitor the cats.[/align][/align][/align][/align][/align][/align]

 

Isn't Bank 2 a front O2 sensor??




JT

 

[/align][/align]Bank 2 is the driver's side. bank 1 is the passenger's side. Sensor 1 is front, sensor 2 is rear...[/align][/align][/align][/align]

 

Ok i just went unedr the car while it was running and noticed that the (drivers side) X pipe is leaking where it is bolted to the manifold. I think this may be the problem, as long as bank 2 is the drivers side

 

Yes bank 2 is driver side. All ford engines bank 1 is the side with cylinder #1 which on our motors is passenger side.