Help with 02 sensors
Help with 02 sensors ok need help with this one big time..... basically why do my oxygen sensors look like this?
this is set number 2 and its doing the same thing.... had it tuned at race proven motorsports in Delaware, they told me my right bank had a bad sensor, so I just replaced both of them, but still acts the same.... its a mutt of a motor, 00 block, 98 top end, heads cam, injectors, yatta yatta.... runs good at WOT but cruising it wants to bog out... has new MAF sensor, running the Vette/LS6 one, fuel pressure is good, spark plugs look good.... any suggestions?
this is set number 2 and its doing the same thing.... had it tuned at race proven motorsports in Delaware, they told me my right bank had a bad sensor, so I just replaced both of them, but still acts the same.... its a mutt of a motor, 00 block, 98 top end, heads cam, injectors, yatta yatta.... runs good at WOT but cruising it wants to bog out... has new MAF sensor, running the Vette/LS6 one, fuel pressure is good, spark plugs look good.... any suggestions?
I'd start w/ some data logs....
A known bad sensor, and it was "tuned" anyway?? Or, were the sensors changed when the tune was done??
A known bad sensor, and it was "tuned" anyway?? Or, were the sensors changed when the tune was done??
Last edited by Old Geezer; Aug 14, 2011 at 06:11 PM.
Well its basically a stock tune, and at wot its fine only at a cruise speed does it bog and spit, they said replace the pasenger side O2 sensor and it should fix, I just wanted to verify computer wasn't causing problems.... Figured it might have been a prior tune or something causing it.... Holds idle great
dont know if this helps any to the guys that know what most of this means but heres some readings ive gotten 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
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
Your front O2s are fine, no reading for the drivers rear. Under normal operation they switch constantly from about .01-.95v. A bad O2 will be stuck at one value or never go to a certain range
O2S11(V) : .xxx
O2 Sensor Bank 1 Sensor 1 (front) measured in voltage : value .xxx volts
Something is amiss though, the PCM is cutting 27-28% of fuel for your drivers bank
O2S11(V) : .xxx
O2 Sensor Bank 1 Sensor 1 (front) measured in voltage : value .xxx volts
Something is amiss though, the PCM is cutting 27-28% of fuel for your drivers bank
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it wasnt much of a tune, its a stock motor..... I just took it there to see if it was going to run right, and double check everything over..... I would go back in a heartbeat.... friendly great guys up there....
