I have just recently ordered a new cap, rotor, and plug wires. The plugs are new as of 600 miles ago. So is the fuel filter. Another thing is my aftermarket boost gauge shows 19 in. Hg at idle and the full 8 lbs of boost at full load, so I do not believe there is a terrible boost leak.
I have been noticing a fair amount of hesitation under boost. Also I just took it on a 300 mile road trip and I averaged 15 mpg, and around the city I would be lucky to see 12, and this is absolutely babying it, no hard acceleration runs. I figured I would cover my basis and do a general tune-up but I was doing some reading and see that the o2 sensor could be the cause of possibly both. Now what surprises me about that is that I get no codes thrown like I would expect.
So I tested it as per this website: http://www.gt4dc.co.uk/website/development/diagnose/diagnose.php (under poor fuel consumption)
Now on my vehicle there are two OX pins, 1 and 2. So I tested both one at a time after taking the car for a quick drive. The OX2 pin showed no voltage, and the OX1 pin showed 0.08V..... yes that's right 0.08. Now if I understand correctly perfect voltage should have been 0.5. So if the ECU is getting 0.08 from the o2 sensor it would dump fuel trying to get it up I assume? I am definitely not sure.
Now is this the proper way of testing the o2 sensor? Is there a better way? Or could my o2 sensor be reading correctly and something is causing a terribly rich condition. I would love anybodies input on this.
I have been noticing a fair amount of hesitation under boost. Also I just took it on a 300 mile road trip and I averaged 15 mpg, and around the city I would be lucky to see 12, and this is absolutely babying it, no hard acceleration runs. I figured I would cover my basis and do a general tune-up but I was doing some reading and see that the o2 sensor could be the cause of possibly both. Now what surprises me about that is that I get no codes thrown like I would expect.
So I tested it as per this website: http://www.gt4dc.co.uk/website/development/diagnose/diagnose.php (under poor fuel consumption)
Now on my vehicle there are two OX pins, 1 and 2. So I tested both one at a time after taking the car for a quick drive. The OX2 pin showed no voltage, and the OX1 pin showed 0.08V..... yes that's right 0.08. Now if I understand correctly perfect voltage should have been 0.5. So if the ECU is getting 0.08 from the o2 sensor it would dump fuel trying to get it up I assume? I am definitely not sure.
Now is this the proper way of testing the o2 sensor? Is there a better way? Or could my o2 sensor be reading correctly and something is causing a terribly rich condition. I would love anybodies input on this.