po300 random misfire
#11
Freeze Frame Information
Parameter Description Value
DTC for which Freeze Frame was Stored P0300
Fuel System 1 Status Open Loop
Fuel System 2 Status Open Loop
Calculated LOAD Value 5.88 %
Engine Coolant Temp 100.40 °F
Short Term Fuel Trim - Bank 1 3.13 %
Long Term Fuel Trim - Bank 1 6.25 %
Short Term Fuel Trim - Bank 2 -0.78 %
Long Term Fuel Trim - Bank 2 6.25 %
Intake Manifold Absolute Pressure 12.44 inHg
Engine RPM 1,008.50 rpm
Vehicle Speed Sensor 21.13 mph
Air Flow Rate Mass Air Flow Sensor 2.23 lb/min
Absolute Throttle Position 22.35 %
Parameter Description Value
DTC for which Freeze Frame was Stored P0300
Fuel System 1 Status Open Loop
Fuel System 2 Status Open Loop
Calculated LOAD Value 5.88 %
Engine Coolant Temp 100.40 °F
Short Term Fuel Trim - Bank 1 3.13 %
Long Term Fuel Trim - Bank 1 6.25 %
Short Term Fuel Trim - Bank 2 -0.78 %
Long Term Fuel Trim - Bank 2 6.25 %
Intake Manifold Absolute Pressure 12.44 inHg
Engine RPM 1,008.50 rpm
Vehicle Speed Sensor 21.13 mph
Air Flow Rate Mass Air Flow Sensor 2.23 lb/min
Absolute Throttle Position 22.35 %
#13
With out the Live data, we can not see whats going on with your engine. If you would like to learn more to be able to fix your own vehicals you will need to get something more then a code reader.
#16
ok thanks. having the same problem with mine after rebuilding the 5.3 and 4l65e a few days ago.....runs fine down the road and the A/F ratio hangs around 14.7 cruising (10 ish WOT @ 3psi) but at idle its got a random miss. been searching for info for a few days with no luck other than the obvious (plugs, wires, coils, etc) will see if my local shops' scan tool will fix it tomorrow.
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