MAF Diagnostics

MAF Diagnostics for your volvo can help with troubleshooting. Troubling load percentages are in brown and they seem to be all over the place too… dropping off strongly from 53% to 43% in the frame immediately before the MAF and Throttle position spike, and then jumping to 63% in the frame after the MAF/Throttle spike, and peaking at 67% a frame later.

Calculated Load Value(%)53.7
Short Term Fuel Trim -Bank 1(%)-2.3
Long Term Fuel Trim – Bank 1(%)-1.6
Intake Manifold Absolute Pressure(kPa)58.0
Engine RPM(rpm) 2184
Vehicle Speed Sensor (km/h)99
Ignition Timing Advance for #1 Cylinder(¡£)33.0
Air Flow Rate from Mass Air Flow Sensor(g/s)21.69
Absolute Throttle Position(%)25.5
Oxygen Sensor Output Voltage Bank 1-Sensor 1(V)0.485
Short Term Fuel Trim Bank 1-Sensor 1(%)-3.1
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.730
Short Term Fuel Trim Bank 1-Sensor 2(%)-0.8
———————-
Calculated Load Value(%)51.4
Short Term Fuel Trim -Bank 1(%)-5.5
Long Term Fuel Trim – Bank 1(%)-2.3
Intake Manifold Absolute Pressure(kPa)73.0
Engine RPM(rpm) 2184
Vehicle Speed Sensor(km/h)99
Ignition Timing Advance for #1 Cylinder(¡£)37.5
Air Flow Rate from Mass Air Flow Sensor(g/s)18.42
Absolute Throttle Position(%)19.2
Oxygen Sensor Output Voltage Bank 1-Sensor 1(V)0.485
Short Term Fuel Trim Bank 1-Sensor 1(%)-7.0
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.765
Short Term Fuel Trim Bank 1-Sensor 2(%)-0.8
———————-
Calculated Load Value(%)53.3
Short Term Fuel Trim -Bank 1(%)-9.4
Long Term Fuel Trim – Bank 1(%)-2.3
Intake Manifold Absolute Pressure(kPa)55.0
Engine RPM(rpm) 2151
Vehicle Speed Sensor(km/h)98
Ignition Timing Advance for #1 Cylinder(¡£)34.0
Air Flow Rate from Mass Air Flow Sensor(g/s)19.32
Absolute Throttle Position(%)27.5
Oxygen Sensor Output Voltage Bank 1-Sensor 1(V)0.470
Short Term Fuel Trim Bank 1-Sensor 1(%)-8.6
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.230
Short Term Fuel Trim Bank 1-Sensor 2(%)-0.8
———————-
Calculated Load Value(%)43.5
Short Term Fuel Trim -Bank 1(%)-5.5
Long Term Fuel Trim – Bank 1(%)-1.6
Intake Manifold Absolute Pressure(kPa)52.0
Engine RPM(rpm) 2141
Vehicle Speed Sensor(km/h)97
Ignition Timing Advance for #1 Cylinder(¡£)34.0
Air Flow Rate from Mass Air Flow Sensor(g/s)18.00
Absolute Throttle Position(%)25.1
Oxygen Sensor Output Voltage Bank 1-Sensor 1(V)0.405
Short Term Fuel Trim Bank 1-Sensor 1(%)-7.0
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.125
Short Term Fuel Trim Bank 1-Sensor 2(%)-0.8
———————-
Calculated Load Value(%)52.9
Short Term Fuel Trim -Bank 1(%)-6.3
Long Term Fuel Trim – Bank 1(%)-1.6
Intake Manifold Absolute Pressure(kPa)55.0
Engine RPM(rpm) 2144
Vehicle Speed Sensor(km/h)97
Ignition Timing Advance for #1 Cylinder(¡£)33.0
Air Flow Rate from Mass Air Flow Sensor(g/s)31.93
Absolute Throttle Position(%)38.4
Oxygen Sensor Output Voltage Bank 1-Sensor 1(V)0.495
Short Term Fuel Trim Bank 1-Sensor 1(%)-6.3
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.135
Short Term Fuel Trim Bank 1-Sensor 2(%)-0.8
———————-
Calculated Load Value(%)63.9
Engine Coolant Temperature(¡£C)92
Short Term Fuel Trim -Bank 1(%)-8.6
Long Term Fuel Trim – Bank 1(%)-2.3
Intake Manifold Absolute Pressure(kPa)60.0
Engine RPM(rpm) 2129
Vehicle Speed Sensor(km/h)96
Ignition Timing Advance for #1 Cylinder(¡£)32.5
Air Flow Rate from Mass Air Flow Sensor(g/s)21.47
Absolute Throttle Position(%)17.6
Oxygen Sensor Output Voltage Bank 1-Sensor 1(V)0.470
Short Term Fuel Trim Bank 1-Sensor 1(%)-7.8
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.155
Short Term Fuel Trim Bank 1-Sensor 2(%)-1.6
———————-
Calculated Load Value(%)67.1
Short Term Fuel Trim -Bank 1(%)-3.9
Long Term Fuel Trim – Bank 1(%)-2.3
Intake Manifold Absolute Pressure(kPa)70.0
Engine RPM(rpm) 2119
Vehicle Speed Sensor(km/h)96
Ignition Timing Advance for #1 Cylinder(¡£)26.5
Air Flow Rate from Mass Air Flow Sensor(g/s)27.34
Absolute Throttle Position(%)31.8
Oxygen Sensor Output Voltage Bank 1-Sensor 1(V)0.480
Short Term Fuel Trim Bank 1-Sensor 1(%)0.0
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.680
Short Term Fuel Trim Bank 1-Sensor 2(%)-0.8
———————-
Calculated Load Value(%)65.5
Engine Coolant Temperature(¡£C)92
Short Term Fuel Trim -Bank 1(%)0.0
Long Term Fuel Trim – Bank 1(%)-2.3
Intake Manifold Absolute Pressure(kPa)72.0
Engine RPM(rpm) 2133
Vehicle Speed Sensor(km/h)96
Ignition Timing Advance for #1 Cylinder(¡£)27.0
Air Flow Rate from Mass Air Flow Sensor(g/s)27.65
Absolute Throttle Position(%)32.2
Oxygen Sensor Output Voltage Bank 1-Sensor 1(V)0.485
Short Term Fuel Trim Bank 1-Sensor 1(%)-0.8
Oxygen Sensor Output Voltage Bank 1-Sensor 2(V)0.655
Short Term Fuel Trim Bank 1-Sensor 2(%)-0.8