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Have cleaned the MAF with MAF cleaner and have driven it all over town(surface and interstate). Looked up drive-cycle info and ran thru them as completed as possible.
OK after searching around on different diagrams, apparently they all share orange wire which then ties into a GreyRed wire which then either is supplying voltage or ground(believe its voltage PCM controls grounds I think) to all the other engine control sensors(ie Crank sensor knock sensor ect…). Now according to the diagram this is to some sort of adjustable capacitor internal of the O2’s. But none the less it is the only thing I can find that other then the PCM they all have in common.So hopefully by following the yellow brick road(orange wire) I will find my wizard(issue).
Hope this will also fix the contradiction of a (-100)meaning it is taken away fuel because of being rich but setting a code of lean meaning it would be adding fuel.
Because if you look at the chart on this page http://en.wikipedia.org/wiki/OBD-II_PIDs the first column(for Min value) is exactly what I am seeing on my read outs(for STFT,LTFT{rows6-9}), And strangely also readouts saying what the min value is showing in the rows 14,15, and 18 which says lean… So confusing :dry: :stick:OK after searching around on different diagrams, apparently they all share orange wire which then ties into a GreyRed wire which then either is supplying voltage or ground(believe its voltage PCM controls grounds I think) to all the other engine control sensors(ie Crank sensor knock sensor ect…). Now according to the diagram this is to some sort of adjustable capacitor internal of the O2’s. But none the less it is the only thing I can find that other then the PCM they all have in common.So hopefully by following the yellow brick road(orange wire) I will find my wizard(issue).
Hope this will also fix the contradiction of a (-100)meaning it is taken away fuel because of being rich but setting a code of lean meaning it would be adding fuel.
Because if you look at the chart on this page http://en.wikipedia.org/wiki/OBD-II_PIDs the first column(for Min value) is exactly what I am seeing on my read outs(for STFT,LTFT{rows6-9}), And strangely also readouts saying what the min value is showing in the rows 14,15, and 18 which says lean… So confusing :dry: :stick:Ya checked all the fuses even tho I had no reference saying which fuse was for what, but all checked fine. Have a haynes, but in my opinion the tree served a better purpose then this brand of manual. Went ahead and ordered a intake gasket set and set of new injector o-rings. Mean while I am researching if there is a fuse or relay that ties all 3 O2’s together. Just happened to have a 2000 Explorer that was accessible so plugged my lab top into it and it read the O2’s no problem, so I think that confirms my system is still fine. So it is definitely on the end of the vehicle. Almost tempted to pop open the ECU and see if there isn’t some sort of cold solder joint or something(maybe as a last ditch effort before buying a replacement one).
Ya checked all the fuses even tho I had no reference saying which fuse was for what, but all checked fine. Have a haynes, but in my opinion the tree served a better purpose then this brand of manual. Went ahead and ordered a intake gasket set and set of new injector o-rings. Mean while I am researching if there is a fuse or relay that ties all 3 O2’s together. Just happened to have a 2000 Explorer that was accessible so plugged my lab top into it and it read the O2’s no problem, so I think that confirms my system is still fine. So it is definitely on the end of the vehicle. Almost tempted to pop open the ECU and see if there isn’t some sort of cold solder joint or something(maybe as a last ditch effort before buying a replacement one).
sorry on slow reply got side tracked on another car(you know how it goes…lol). I used a infraid thermo and ECT is reading correctly. The thing that confuses me is that I can in no way get any change in the O2’s readings. All 3 O2’s always read 0.00Volts and -100% no matter I cause a vacuum leak or induce carb cleaner I get no fluctuation at all. I even put a new drivers side upstream O2 in and same reading. Have checked PCV hose all around the intake with carb cleaner the intake hose between the MAF and throttle body and all vacuum hoses. I mistakenly erased the codes and noticed it hasn’t reset the 171-174(yet), but it is still running rough and now I am noticing a little bit of a backfire going on. Oh and right before I reset it there was a P0306-misfire cly 6, but it hasn’t returned either.
Going to pull up the wiring diagram and see if there is any one thing that ties the 3 O2’s together beside the computer.
Also going to do like Scotty Kilmer says and spark up a stogie and see what I can find or at least get to enjoy a cigar…lolsorry on slow reply got side tracked on another car(you know how it goes…lol). I used a infraid thermo and ECT is reading correctly. The thing that confuses me is that I can in no way get any change in the O2’s readings. All 3 O2’s always read 0.00Volts and -100% no matter I cause a vacuum leak or induce carb cleaner I get no fluctuation at all. I even put a new drivers side upstream O2 in and same reading. Have checked PCV hose all around the intake with carb cleaner the intake hose between the MAF and throttle body and all vacuum hoses. I mistakenly erased the codes and noticed it hasn’t reset the 171-174(yet), but it is still running rough and now I am noticing a little bit of a backfire going on. Oh and right before I reset it there was a P0306-misfire cly 6, but it hasn’t returned either.
Going to pull up the wiring diagram and see if there is any one thing that ties the 3 O2’s together beside the computer.
Also going to do like Scotty Kilmer says and spark up a stogie and see what I can find or at least get to enjoy a cigar…lolAll 3 O2’s are heater type could there be a fuse for all 3 heaters blown and so they are not getting hot enough to report any voltages? Is that possable?
Basicly no matter what I do(unplug hoses spray carb cleaner in intake ect…) I can not cause any change in O2 readings.All 3 O2’s are heater type could there be a fuse for all 3 heaters blown and so they are not getting hot enough to report any voltages? Is that possable?
Basicly no matter what I do(unplug hoses spray carb cleaner in intake ect…) I can not cause any change in O2 readings.OK, tried all that and get no change at all in any of the trims or voltages. And maybe misread but a posative number means lean and negative means rich? So 171-174 is saying lean but O2’s are maxed at rich? reading is solid -100% 0 Volts? And all 3 are reporting same value even one being a known good O2
OK, tried all that and get no change at all in any of the trims or voltages. And maybe misread but a posative number means lean and negative means rich? So 171-174 is saying lean but O2’s are maxed at rich? reading is solid -100% 0 Volts? And all 3 are reporting same value even one being a known good O2
