Hi all, I joined this forum to get some help on my 01 mustang, it is 4.6 2v. I've been getting weird idle hesitation. it actually calmed down some since i cleaned my IAC, but when the engine is warm and i reach speeds of 40-50 the car just feels like it wants to die, it bucks. I tested alternator for excessive ripple since someone from another forum said that can cause the Cam sensor to be off, but alternator tested good. I have some live data when engine is warm which to me does not look good. Between the 3 samples, the middle sample percentage load had increased, as the o2 sensors also changed. I've been to numerous forums and no one seems to wanna help or even bother giving their opinion. Any help will be greatly appreciated.
Number of DTCs stored in this ECU 0
Fuel system 1 statusCL
Fuel System 2 status--
Calculated LOAD Value(%)29.4
Engine Coolant Temperature(¡£C)98
Short Term Fuel Trim -Bank 1(%)-0.8
Long Term Fuel Trim - Bank 1(%)5.5
Short Term Fuel Trim -Bank 2(%)2.3
Long Term Fuel Trim - Bank 2(%)2.3
Fuel Rail Pressure(gauge)(kPa)270
Engine RPM(rpm) 722
Vehicle Speed Sensor(km/h)0
Ignition Timing Advanece for #1 Cylinder(¡£)16.0
Intake Air Temperature(¡£C)23
Air Flow Rate from Mass Air Flow(g/s)5.70
Absolute Throttle Position(%)18.0
Location of Oxygen SensorsB1S12--B2S12--
Oxygen Sensor Output Voltage Bank 1-Sensor 1(V)0.905
Short Term Fuel Trim Bank 1-Sensor 1(%)-1.6
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 1(V)0.770
Short Term Fuel Trim Bank 2-Sensor 1(%)-2.3
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.835
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
OBD requirements to which vehicle is designedOBDII
----------------------
Number of DTCs stored in this ECU 0
Fuel system 1 statusCL
Fuel System 2 status--
Calculated LOAD Value(%)43.9
Engine Coolant Temperature(¡£C)98
Short Term Fuel Trim -Bank 1(%)-3.1
Long Term Fuel Trim - Bank 1(%)5.5
Short Term Fuel Trim -Bank 2(%)-3.9
Long Term Fuel Trim - Bank 2(%)2.3
Fuel Rail Pressure(gauge)(kPa)267
Engine RPM(rpm) 742
Vehicle Speed Sensor(km/h)0
Ignition Timing Advanece for #1 Cylinder(¡£)12.0
Intake Air Temperature(¡£C)24
Air Flow Rate from Mass Air Flow(g/s)6.97
Absolute Throttle Position(%)18.0
Location of Oxygen SensorsB1S12--B2S12--
Oxygen Sensor Output Voltage Bank 1-Sensor 1(V)0.085
Short Term Fuel Trim Bank 1-Sensor 1(%)-0.8
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.235
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 1(V)0.000
Short Term Fuel Trim Bank 2-Sensor 1(%)-1.6
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.045
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
OBD requirements to which vehicle is designedOBDII
----------------------
Number of DTCs stored in this ECU 0
Fuel system 1 statusCL
Fuel System 2 status--
Calculated LOAD Value(%)29.8
Engine Coolant Temperature(¡£C)98
Short Term Fuel Trim -Bank 1(%)1.6
Long Term Fuel Trim - Bank 1(%)5.5
Short Term Fuel Trim -Bank 2(%)0.8
Long Term Fuel Trim - Bank 2(%)1.6
Fuel Rail Pressure(gauge)(kPa)273
Engine RPM(rpm) 790
Vehicle Speed Sensor(km/h)0
Ignition Timing Advanece for #1 Cylinder(¡£)12.0
Intake Air Temperature(¡£C)23
Air Flow Rate from Mass Air Flow(g/s)6.70
Absolute Throttle Position(%)18.0
Location of Oxygen SensorsB1S12--B2S12--
Oxygen Sensor Output Voltage Bank 1-Sensor 1(V)0.915
Short Term Fuel Trim Bank 1-Sensor 1(%)0.0
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.135
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 1(V)0.075
Short Term Fuel Trim Bank 2-Sensor 1(%)3.1
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.065
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
OBD requirements to which vehicle is designedOBDII
Number of DTCs stored in this ECU 0
Fuel system 1 statusCL
Fuel System 2 status--
Calculated LOAD Value(%)29.4
Engine Coolant Temperature(¡£C)98
Short Term Fuel Trim -Bank 1(%)-0.8
Long Term Fuel Trim - Bank 1(%)5.5
Short Term Fuel Trim -Bank 2(%)2.3
Long Term Fuel Trim - Bank 2(%)2.3
Fuel Rail Pressure(gauge)(kPa)270
Engine RPM(rpm) 722
Vehicle Speed Sensor(km/h)0
Ignition Timing Advanece for #1 Cylinder(¡£)16.0
Intake Air Temperature(¡£C)23
Air Flow Rate from Mass Air Flow(g/s)5.70
Absolute Throttle Position(%)18.0
Location of Oxygen SensorsB1S12--B2S12--
Oxygen Sensor Output Voltage Bank 1-Sensor 1(V)0.905
Short Term Fuel Trim Bank 1-Sensor 1(%)-1.6
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 1(V)0.770
Short Term Fuel Trim Bank 2-Sensor 1(%)-2.3
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.835
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
OBD requirements to which vehicle is designedOBDII
----------------------
Number of DTCs stored in this ECU 0
Fuel system 1 statusCL
Fuel System 2 status--
Calculated LOAD Value(%)43.9
Engine Coolant Temperature(¡£C)98
Short Term Fuel Trim -Bank 1(%)-3.1
Long Term Fuel Trim - Bank 1(%)5.5
Short Term Fuel Trim -Bank 2(%)-3.9
Long Term Fuel Trim - Bank 2(%)2.3
Fuel Rail Pressure(gauge)(kPa)267
Engine RPM(rpm) 742
Vehicle Speed Sensor(km/h)0
Ignition Timing Advanece for #1 Cylinder(¡£)12.0
Intake Air Temperature(¡£C)24
Air Flow Rate from Mass Air Flow(g/s)6.97
Absolute Throttle Position(%)18.0
Location of Oxygen SensorsB1S12--B2S12--
Oxygen Sensor Output Voltage Bank 1-Sensor 1(V)0.085
Short Term Fuel Trim Bank 1-Sensor 1(%)-0.8
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.235
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 1(V)0.000
Short Term Fuel Trim Bank 2-Sensor 1(%)-1.6
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.045
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
OBD requirements to which vehicle is designedOBDII
----------------------
Number of DTCs stored in this ECU 0
Fuel system 1 statusCL
Fuel System 2 status--
Calculated LOAD Value(%)29.8
Engine Coolant Temperature(¡£C)98
Short Term Fuel Trim -Bank 1(%)1.6
Long Term Fuel Trim - Bank 1(%)5.5
Short Term Fuel Trim -Bank 2(%)0.8
Long Term Fuel Trim - Bank 2(%)1.6
Fuel Rail Pressure(gauge)(kPa)273
Engine RPM(rpm) 790
Vehicle Speed Sensor(km/h)0
Ignition Timing Advanece for #1 Cylinder(¡£)12.0
Intake Air Temperature(¡£C)23
Air Flow Rate from Mass Air Flow(g/s)6.70
Absolute Throttle Position(%)18.0
Location of Oxygen SensorsB1S12--B2S12--
Oxygen Sensor Output Voltage Bank 1-Sensor 1(V)0.915
Short Term Fuel Trim Bank 1-Sensor 1(%)0.0
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.135
Short Term Fuel Trim Bank 1-Sensor 2(%)N/A
Oxygen Sensor Output Voltage Bank 2-Sensor 1(V)0.075
Short Term Fuel Trim Bank 2-Sensor 1(%)3.1
Oxygen Sensor Output Voltage Bank 2-Sensor 2(V)0.065
Short Term Fuel Trim Bank 2-Sensor 2(%)99.2
OBD requirements to which vehicle is designedOBDII