P0171, P0174 and scan tool readings

I have a 2005 Toyota Solara SLE, 133,000 miles, with P0171 and P0174
codes, lean mixture in both banks, and a check engine light that returns
soon after being cleared.
I've cleaned and then replaced the MAF sensor, replaced the PCV valve,
and listened all over for hissing. I have a constant noise in one ear,
like the sound of water running in a pipe, but I still think I'd be able
to hear hissing with the other ear, and even the bad one. I've also
used an unlit propane torch with a hose on the end to direct propane to
every place I thought there could be a vacuum leak and there are no
engine-sound changes.
I think cleaning the MAF sensor actually made it run worse. The
hesistation at 1mph, which was occasional, became frequent. Changing
the MAF sensor didn't have any effect.
These are the sensors readings, at idle, then at 2000, 3000, and 4000rpm
as best as I could hold the throttle at those places:
Below are the sensor 2 readings, I've included the Sensor 1 readings
below them, but they seem less interesting. Below that are a few sets
of trim readings, 2 or 3 at each rpm. I have the complete set of
readings if that will help, but I thought it would make this post too
long, and that intervals were easier to compare without the extra lines.
The MPH is always 0 but I could do it again with the car moving, with
someone helping if need be.
Sensor 2
Live Data
Engine RPM(rpm) 720
Ignition Timing Advanece for #1 Cylinder(¡£)15.0
Intake Air Temperature(¡£F)113
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.01
Absolute Throttle Position(%)16.5
OBD requirements to which vehicle is designedOBDII
===> Despite the line above, what follows are actual readings, right?
Not just design requirements?
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.640
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.660
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 710
Ignition Timing Advanece for #1 Cylinder(¡£)14.5
Intake Air Temperature(¡£F)113
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.01
Absolute Throttle Position(%)16.5
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.700
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.640
Short Term Fuel Trim Bank 2-Sensor 2(%)99.279
----------------------
Engine RPM(rpm) 707
Ignition Timing Advanece for #1 Cylinder(¡£)15.0
Intake Air Temperature(¡£F)113
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.01
Absolute Throttle Position(%)16.5
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.115
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.660
Short Term Fuel Trim Bank 2-Sensor 2(%)99.28
----------------------
Engine RPM(rpm) 700
Ignition Timing Advanece for #1 Cylinder(¡£)14.5
Intake Air Temperature(¡£F)113
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.01
Absolute Throttle Position(%)16.5
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.605
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.660
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 1550
Ignition Timing Advanece for #1 Cylinder(¡£)38.0
Intake Air Temperature(¡£F)113
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.01
Absolute Throttle Position(%)18.4
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.195
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.095
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 1813
Ignition Timing Advanece for #1 Cylinder(¡£)40.0
Intake Air Temperature(¡£F)111
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.02
Absolute Throttle Position(%)19.2
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.780
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.760
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 1896
Ignition Timing Advanece for #1 Cylinder(¡£)40.0
Intake Air Temperature(¡£F)111
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.02
Absolute Throttle Position(%)18.8
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.095
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.760
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Numbers of DTCs 2
Engine RPM(rpm) 1895
Ignition Timing Advanece for #1 Cylinder(¡£)40.0
Intake Air Temperature(¡£F)111
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.02
Absolute Throttle Position(%)18.8
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.680
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.740
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 1890
Ignition Timing Advanece for #1 Cylinder(¡£)40.0
Intake Air Temperature(¡£F)111
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.02
Absolute Throttle Position(%)18.8-
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.780
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.780
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 1897
Ignition Timing Advanece for #1 Cylinder(¡£)40.0
Intake Air Temperature(¡£F)111
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.02
Absolute Throttle Position(%)18.8
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.605
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.780
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 1992
Ignition Timing Advanece for #1 Cylinder(¡£)40.5
Intake Air Temperature(¡£F)111
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.02
Absolute Throttle Position(%)19.2
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.760
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.760
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 2676
Ignition Timing Advanece for #1 Cylinder(¡£)45.0
Intake Air Temperature(¡£F)111
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.03
Absolute Throttle Position(%)20.8
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.410
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.270
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 3073
Ignition Timing Advanece for #1 Cylinder(¡£)44.0
Intake Air Temperature(¡£F)111
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.03
Absolute Throttle Position(%)20.8
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.290
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.760
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 3078
Ignition Timing Advanece for #1 Cylinder(¡£)44.0
Intake Air Temperature(¡£F)111
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.03
Absolute Throttle Position(%)20.8
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.175
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.055
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 3109
Ignition Timing Advanece for #1 Cylinder(¡£)44.0
Intake Air Temperature(¡£F)111
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.03
Absolute Throttle Position(%)20.8
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.485
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.055
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 3127
Ignition Timing Advanece for #1 Cylinder(¡£)44.0
Intake Air Temperature(¡£F)111
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.03
Absolute Throttle Position(%)20.8
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.760
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.720
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 3169
Ignition Timing Advanece for #1 Cylinder(¡£)44.0
Intake Air Temperature(¡£F)111
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.03
Absolute Throttle Position(%)20.8
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.330
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.740
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 3837
Ignition Timing Advanece for #1 Cylinder(¡£)43.0
Intake Air Temperature(¡£F)111
At almost 4000 rpm and above, the
air temp has only gone down 2
degrees!
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.05
Absolute Throttle Position(%)22.4
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.525
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.015
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 4180
Ignition Timing Advanece for #1 Cylinder(¡£)44.0
Intake Air Temperature(¡£F)111
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.04
Absolute Throttle Position(%)22.4
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.075
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.095
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 4180
Ignition Timing Advanece for #1 Cylinder(¡£)44.0
Intake Air Temperature(¡£F)113
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.04
Absolute Throttle Position(%)22.4
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.290
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.135
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 4199
Ignition Timing Advanece for #1 Cylinder(¡£)44.5
Intake Air Temperature(¡£F)113
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.05
Absolute Throttle Position(%)22.4
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.095
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.135
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 3716
Ignition Timing Advanece for #1 Cylinder(¡£)45.0
Intake Air Temperature(¡£F)113
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.02
Absolute Throttle Position(%)17.6
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.835
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.820
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Engine RPM(rpm) 866
Ignition Timing Advanece for #1 Cylinder(¡£)21.5
Intake Air Temperature(¡£F)113
Air Flow Rate from Mass Air Flow Sensor(lb/s)0.01
Absolute Throttle Position(%)16.5
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.835
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.820
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
----------------------
Numbers of DTCs 2
Fuel system 1 statusCL
Fuel System 2 statusCL
Calculated Load Value(%)11.8
Engine Coolant Temperature(¡£F)168
Short Term Fuel Trim -Bank 1(%)-2.3
Long Term Fuel Trim - Bank 1(%)32.0
Short Term Fuel Trim -Bank 2(%)-0.8
Long Term Fuel Trim - Bank 2(%)35.2
Engine RPM(rpm) 683
What's really noticeable to me is that Short Term Fuel Trim Bank
1-Sensor 2(%) is always N/A. Even though Bank 2 Sensor 2 gives
values at every interval. Does that indicate maybe that the Bank 1
sensor 2 has failed???? Could that cause the codes, even for bank 2?
I talked to the original owner, who had owned the car since it was new,
and she first got the CEL in March. She took it in, they could find
nothing wrong, so they turned off the light and she said the light never
went on again. She has no reason to lie to me, because I'd already
bought the car, and not from her. (She traded in the car to a new car
dealer who auctioned it and I bought if from the guy who bought it at
the auction.)
The car hesitates from 1mph. Probably not from 0 or 3mph or higher.
I'll really appreciate any help you can give.
Sensor 1 readings. From the same test, so the engine speeds are the
same as above. I omitted as much as possible to make it easier to
compare.
Live Data
Equivalence Ration (lambda)(Bank 1-Sensor 1)1.003
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.287
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.004
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.263
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)0.994
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.260
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.006
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.279
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)0.999
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.246
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.002
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.268
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)1.065
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.573
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.137
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.760
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)1.014
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.304
Equivalence Ration (lambda)(Bank 2-Sensor 1)0.949
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)2.980
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)0.982
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.160
Equivalence Ration (lambda)(Bank 2-Sensor 1)0.953
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.028
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)0.993
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.299
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.010
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.307
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)0.992
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.300
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.094
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.553
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)1.057
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.465
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.015
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.300
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)1.012
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.405
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.036
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.396
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)1.104
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.594
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.065
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.357
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)0.981
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.269
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.096
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.557
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)0.983
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.266
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.049
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.388
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)0.947
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.039
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.002
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.348
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)0.943
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.015
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.000
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.363
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)0.996
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.122
Equivalence Ration (lambda)(Bank 2-Sensor 1)0.948
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)2.910
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)0.983
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.244
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.004
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.253
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)0.909
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)2.917
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.040
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.385
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)1.191
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.825
Equivalence Ration (lambda)(Bank 2-Sensor 1)0.927
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)2.688
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)0.980
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.071
Equivalence Ration (lambda)(Bank 2-Sensor 1)0.906
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)2.775
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)1.088
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.407
Equivalence Ration (lambda)(Bank 2-Sensor 1)0.912
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)2.749
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)1.016
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.344
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.026
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.390
----------------------
Equivalence Ration (lambda)(Bank 1-Sensor 1)1.004
Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.305
Equivalence Ration (lambda)(Bank 2-Sensor 1)1.013
Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.338
----------------------
Numbers of DTCs 2
Fuel system 1 statusCL
Fuel System 2 statusCL
Calculated Load Value(%)11.8
Engine Coolant Temperature(¡£F)168
Short Term Fuel Trim -Bank 1(%)-2.3
Long Term Fuel Trim - Bank 1(%)32.0
Short Term Fuel Trim -Bank 2(%)-0.8
Long Term Fuel Trim - Bank 2(%)35.2
Engine RPM(rpm) 683
Trim readings
Fuel system 1 statusCL
Fuel System 2 statusCL
Calculated Load Value(%)12.2
Engine Coolant Temperature(¡£F)150
Short Term Fuel Trim -Bank 1(%)7.8
Long Term Fuel Trim - Bank 1(%)32.0
Short Term Fuel Trim -Bank 2(%)7.8
Long Term Fuel Trim - Bank 2(%)35.2
Calculated Load Value(%)11.8
Engine Coolant Temperature(¡£F)149
Short Term Fuel Trim -Bank 1(%)9.4
Long Term Fuel Trim - Bank 1(%)32.0
Short Term Fuel Trim -Bank 2(%)8.6
Long Term Fuel Trim - Bank 2(%)35.2
Calculated Load Value(%)11.8
Engine Coolant Temperature(¡£F)149
Short Term Fuel Trim -Bank 1(%)7.0
Long Term Fuel Trim - Bank 1(%)32.0
Short Term Fuel Trim -Bank 2(%)9.4
Long Term Fuel Trim - Bank 2(%)35.2
....
Calculated Load Value(%)11.8
Engine Coolant Temperature(¡£F)150
Short Term Fuel Trim -Bank 1(%)14.8
Long Term Fuel Trim - Bank 1(%)32.0
Short Term Fuel Trim -Bank 2(%)18.8
Long Term Fuel Trim - Bank 2(%)32.8
Engine RPM(rpm) 1813
Calculated Load Value(%)12.2
Engine Coolant Temperature(¡£F)150
Short Term Fuel Trim -Bank 1(%)10.2
Long Term Fuel Trim - Bank 1(%)32.0
Short Term Fuel Trim -Bank 2(%)5.5
Long Term Fuel Trim - Bank 2(%)32.8
Engine RPM(rpm) 1896
...
Calculated Load Value(%)14.9
Engine Coolant Temperature(¡£F)158
Short Term Fuel Trim -Bank 1(%)-12.5
Long Term Fuel Trim - Bank 1(%)32.0
Short Term Fuel Trim -Bank 2(%)-4.7
Long Term Fuel Trim - Bank 2(%)32.8
Engine RPM(rpm) 3073
Calculated Load Value(%)14.1
Engine Coolant Temperature(¡£F)158
Short Term Fuel Trim -Bank 1(%)-5.5
Long Term Fuel Trim - Bank 1(%)32.0
Short Term Fuel Trim -Bank 2(%)-7.8
Long Term Fuel Trim - Bank 2(%)32.8
Engine RPM(rpm) 3078
Calculated Load Value(%)14.5
Engine Coolant Temperature(¡£F)159
Short Term Fuel Trim -Bank 1(%)-13.3
Long Term Fuel Trim - Bank 1(%)21.1
Short Term Fuel Trim -Bank 2(%)-10.9
Long Term Fuel Trim - Bank 2(%)32.8
Engine RPM(rpm) 3109
.....
Calculated Load Value(%)16.1
Engine Coolant Temperature(¡£F)167
Short Term Fuel Trim -Bank 1(%)5.5
Long Term Fuel Trim - Bank 1(%)18.0
Short Term Fuel Trim -Bank 2(%)4.7
Long Term Fuel Trim - Bank 2(%)32.8
Engine RPM(rpm) 3837
Fuel system 1 statusCL
Fuel System 2 statusCL
Calculated Load Value(%)14.5
Engine Coolant Temperature(¡£F)167
Short Term Fuel Trim -Bank 1(%)-7.8
Long Term Fuel Trim - Bank 1(%)32.0
Short Term Fuel Trim -Bank 2(%)18.8
Long Term Fuel Trim - Bank 2(%)32.8
Engine RPM(rpm) 4180
Calculated Load Value(%)13.7
Engine Coolant Temperature(¡£F)168
Short Term Fuel Trim -Bank 1(%)0.0
Long Term Fuel Trim - Bank 1(%)18.0
Short Term Fuel Trim -Bank 2(%)10.9
Long Term Fuel Trim - Bank 2(%)32.8
Engine RPM(rpm) 4180
Reply to
micky
On Sat, 28 Oct 2017 12:43:20 -0400, micky wrote:
On that car, with that combination of codes, 99.9% you have an intake leak. 0.1% remaining, it's a bad primary O2 sensor.
Just saying - Pull the manifold and replace all of the seals. Common problem
Reply to
clare
What are the O2 sensor(s) readings? Can your scanner read or map the O2 voltages? If not then use your dvm on the leads. Check when HOT! 2k-3k rpm.
Reply to
Paul in Houston TX
In alt.home.repair, on Sat, 28 Oct 2017 15:47:26 -0400,
Darn, but okay.
If it takes another 3000 miles before I get this done, am I likely to hurt the engine or cat or anything?
Reply to
micky
In alt.home.repair, on Sat, 28 Oct 2017 19:47:15 -0500, Paul in Houston
I think this is what you mean:
Equivalence Ration (lambda)(Bank 1-Sensor 1)1.065 Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.573 Equivalence Ration (lambda)(Bank 2-Sensor 1)1.137 Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.760 ---------------------- Equivalence Ration (lambda)(Bank 1-Sensor 1)1.014 Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.304 Equivalence Ration (lambda)(Bank 2-Sensor 1)0.949 Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)2.980 ---------------------- Equivalence Ration (lambda)(Bank 1-Sensor 1)0.982 Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.160 Equivalence Ration (lambda)(Bank 2-Sensor 1)0.953 Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.028 ---------------------- Equivalence Ration (lambda)(Bank 1-Sensor 1)0.993 Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.299 Equivalence Ration (lambda)(Bank 2-Sensor 1)1.010 Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.307 ---------------------- Equivalence Ration (lambda)(Bank 1-Sensor 1)0.992 Oxygen Sensor Voltage (Bank 1-Sensor 1)(V)3.300 Equivalence Ration (lambda)(Bank 2-Sensor 1)1.094 Oxygen Sensor Voltage (Bank 2-Sensor 1)(V)3.553 ----------------------
So what they call voltages are more than zero and less than 12, and go up and down around 3.1 to 3.6. So does that imply they are good?
I was going to take the connector apart and measure the resistance, but it looked like I had to take off the air intake "funnel" first, and then, it seems, the car started working right!
Reply to
micky
I went back and reread your original post. All the numbers were there. I was my mistake for overlooking them. The numbers look just fine. A bit on the rich side but that is probably due to the low engine temp ~150F. Don't really see anything wrong.
Reply to
Paul in Houston TX
On Mon, 30 Oct 2017 18:36:04 -0400, micky wrote:
Technically they oscillate between 0 and 5. The wider the swing the better.
Reply to
clare
On Mon, 30 Oct 2017 18:36:04 -0400, micky wrote:
OOPS!!! normal O2 sensor between 1 and zero, late model Toyotas (with wide band O2 sensor) 0 to 3.3
Reply to
clare
In alt.home.repair, on Mon, 30 Oct 2017 20:00:12 -0500, Paul in Houston
That's good. There must have been some vacuum leak, and I suppose it will reappear**.
What I should do is use the scan tool to get the same sort of readings when it's working right, and maybe I can find one or more values that are different from when it was working wrong, and maybe if/when it starts working wrong again, someone can sit in the car watching just that/those values, and when I fiddle with the right hose, or blast the right 02/fuel sensor, he's see the change and tell me.
**After all, it showed up in March when the previous owner had it, then in October. The mechanic who looked at in March might have touched the same hose or whatever I touched. Actually, the CEL and the VSC and Trac*** lights were all on and they all went off a day or two after I bought the car. Then when I was playing with the transmission, putting it in first gear to go down a steep but short hill, the light went on and it's been on almost all of the time since then.
*
**The owners manual says that the Trac (Off) light will come on when the VSC light is on. But still, maybe I should have mentioned the other two lights. I apologize, although I was only hurting myself.
I think this was a very good thread. Even if what I learned didn't directly fix the car, I still learned a lot.
Reply to
micky
Unless it was partly clogged injectors and the Techron cured it, at least for 2 or 3000 miles.
Reply to
micky
Right. And as someone else here pointed out, it's likely on the intake gaskets because they are a known problem on those engines.
Well, just watching the readings should be sufficient. If you manage to block the leak or get propane into the leak instead of air or the like, the numbers will change immediately and obviously and then return back once you remove your hand or the propane torch from the leak.
But you also know that the intake gaskets are bad, and if they aren't causing this problem, they are likely going to cause another. --scott
Reply to
Scott Dorsey

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