Rangstang
Member
- Joined
- May 5, 2010
- Messages
- 194
- Reaction score
- 0
- Points
- 16
- Location
- Mesa, AZ
- Vehicle Year
- 2003
- Make / Model
- Ford
- Engine Size
- 3.0
- Transmission
- Manual
- My credo
- If it ain't broke, I can't fix it.
Hi, I bought the truck last spring cheap, but totaled. It was running good, so I didn't look it over as good as I should. When I got it home, I checked the codes and noticed an EGR related code, so I cleared them and noticed that the O2 system was immediately "OK", not "INC" like usual. I then looked under the vehicle and found that the cat was missing and there were no O2s present. Obviously someone tweaked the PCM to ignore the O2s. Mileage on the truck is usually around 15MPG. I've had a couple of these 3.0L Rangers before and they were in the 21MPG range (almost all freeway miles).
This truck also was converted to the later model plastic plenum and larger throttle body, hence no EGR. I've found a way to get around that for emission testing, but I just want to improve the mileage. Is it likely that a cat, O2s, and an unmodified PCM will resolve the issue?
Thanks in advance for any help you guys can give me.
Byron
This truck also was converted to the later model plastic plenum and larger throttle body, hence no EGR. I've found a way to get around that for emission testing, but I just want to improve the mileage. Is it likely that a cat, O2s, and an unmodified PCM will resolve the issue?
Thanks in advance for any help you guys can give me.
Byron