I bought a PLXdevice to gather stats and errors via the OBD connector and so far I'm not getting great stats and no errors. Round town i'm averaging 20-22l/100km. Standard tyres, 2" lift, bullbar (no winch) and 2x roof bars, so nothing too excessive.
So far I've:
- Replaced the air filter
- Cleaned MAF using MAF Cleaner
- Cleaned the throttle body using throttle body cleaner
- I have just replaced to Oxygen Sensor (took some finding as this model/year only has one and vendors kept telling me it had 3... Eventually of all places SuperCheap found the one I needed) anyway I can see it switching voltage via the PLXdevice so I can only assume all is good. But no better economy yet. Should I drain the ECU? or let it adjust itself over time?
If this is not my problem does anyone out there have any ideas where to now?
I was thinking of the following but didn't want to change them all at once so I can tell what the fuel problem was caused by:
Plan of attack!!!
- Replace plugs to dual points?
- Replace fuel filter?
- Replace the ignition leads?
- Figure out if there is a vacuum leak? how?
- Figure out if the is a fuel pressure regulator issue? how?
- Figure out if I have faulty injectors? how?
I have seen reports that the 3.8ltr should be averaging around 16l/100kms at it's worst (eg towing) so I feel I have a problem and a lot of improvement to make. Other than the economy the car runs well, not fuel related hicups/coughs or splatters...
I have read many threads which is what I've gathered for my plan of attack above. Would be great if anyone can provide advice along the way, especially the hows? and the order of attack?
Thanks Troy
So far I've:
- Replaced the air filter
- Cleaned MAF using MAF Cleaner
- Cleaned the throttle body using throttle body cleaner
- I have just replaced to Oxygen Sensor (took some finding as this model/year only has one and vendors kept telling me it had 3... Eventually of all places SuperCheap found the one I needed) anyway I can see it switching voltage via the PLXdevice so I can only assume all is good. But no better economy yet. Should I drain the ECU? or let it adjust itself over time?
If this is not my problem does anyone out there have any ideas where to now?
I was thinking of the following but didn't want to change them all at once so I can tell what the fuel problem was caused by:
Plan of attack!!!
- Replace plugs to dual points?
- Replace fuel filter?
- Replace the ignition leads?
- Figure out if there is a vacuum leak? how?
- Figure out if the is a fuel pressure regulator issue? how?
- Figure out if I have faulty injectors? how?
I have seen reports that the 3.8ltr should be averaging around 16l/100kms at it's worst (eg towing) so I feel I have a problem and a lot of improvement to make. Other than the economy the car runs well, not fuel related hicups/coughs or splatters...
I have read many threads which is what I've gathered for my plan of attack above. Would be great if anyone can provide advice along the way, especially the hows? and the order of attack?
Thanks Troy
Comment