help with diagnostics....
08-15-2011, 04:10 PM
#1
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help with diagnostics.... Ok so I have been having a problem with my car running rich, going through 2 sets of 02 sensors covered in carbon....was told to get some numbers and this is what I have ended up with using a scanner
Can someone help me decipher this ?
MIL: off
ABSLTPS(%): 0.0
RPM: 625-660
CALC LOAD: 4.3%
MAF(lb/m): 1.62-1.63
MAP(Hg): 13.6
COOLANT: 163
IAT: 106
IGN ADV: 10.5-16
STFTRM1(%) -27.3-- -28.1
LTFTRM1 (%) -10.9
STFTRM2 (%) -.8 - 0.0
LTFTRM2 (%) 14.1
FUELSYS1 CLSD
FUELSYS2 CLSD
02S11(V) 0.060-0.805
O2S21(V) 0.030-0.930
STFTRM21(%) 3.9-4.7
02S22(V) .445-.455
OBD2STAT CA
Can someone help me decipher this ?
MIL: off
ABSLTPS(%): 0.0
RPM: 625-660
CALC LOAD: 4.3%
MAF(lb/m): 1.62-1.63
MAP(Hg): 13.6
COOLANT: 163
IAT: 106
IGN ADV: 10.5-16
STFTRM1(%) -27.3-- -28.1
LTFTRM1 (%) -10.9
STFTRM2 (%) -.8 - 0.0
LTFTRM2 (%) 14.1
FUELSYS1 CLSD
FUELSYS2 CLSD
02S11(V) 0.060-0.805
O2S21(V) 0.030-0.930
STFTRM21(%) 3.9-4.7
02S22(V) .445-.455
OBD2STAT CA
08-15-2011, 04:27 PM
#2
These are your fuel trims for Bank 1 and Bank 2. + fuel trims mean your computer is adding fuel to that side and - fuel trims means its taking away fuel
your fuel trims should be around + or - 5
It looks to me like Bank1(Drivers Side) is Rich and Bank 2 (Passenger Side) is Lean
08-15-2011, 11:39 PM
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well pulled the injectors, one o ring had a chunk missing... and the brown plastic piece was broken...dont know if that makes a difference... but gettings seals tomorrow, ill test the resistance as well....
08-16-2011, 07:47 PM
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all injectors tested with a 12.3-4 ohms.... I dont know what they should be but since they all read the same I assume they are good.... didnt get seals cause I got stuck at work.... but tomorrow Im leaving early
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08-17-2011, 08:13 PM
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ok new seals in, still acting the same... while drivng the fuel trim numbers are opposites... with bank one being under 10 and bank 2 going to -30s... and staying there.... any suggestions before I just burn the car down and collect insurance money
08-17-2011, 08:44 PM
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geezus..... ok with doing this would each side read different ohms? or is it something different? and does anybody have a reference page for what ohm specs should be or anything?
08-17-2011, 08:56 PM
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gotcha... simple check would be to check the wires, its coded like factory so if the tan w/white stripe is in place where the tan should be and vice versa I can assume they are switched, if they match up as incorrect on the pinouts
08-17-2011, 08:57 PM
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sorry I only know basic electronic stuff... this is a whole new world.... and im not too familiar with much fuel injection stuff.. old school carb im able to do
08-19-2011, 04:35 PM
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well after a LOT of reading and whatnot, and going through the service manual, it seems as if its the PCM..... Im going to pick up another one and hopefully that will fix the problem... if not, im just gonna burn the car down and collect insurance money....
08-19-2011, 06:46 PM
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Ok took a shot in the dark, and one guy suggested to me to unplug the passenger side 02.... did that and it runs like a bat out of hell..... and the numbers seemed to have cleaned up some too... being off the throttle in gear rolling around 50-60 mph the bank one short term trim read 1.6% and the passenger read 0.0% stepping on it any would change the values from that to 7.0% on the driver side, and -1.6%.... and sitting at a stop just idling both banks on short term trim read 1.6%..... but it didnt bog anywhere on the quick 7 mile ride.... no rich running that I could tell.... any ideas ? should I unplug the driver side and try that too? like the computer was setup to run without the 02s... I think its closed loop or something ? I know you lose some efficiency but definately runs much much smoother...