[align=center]







01:44.7

Short Term Fuel Trim (Bank 1)

-4.6875

%


01:44.8

Long Term Fuel Trim (Bank 1)

23.4375

%


01:44.9

Short Term Fuel Trim (Bank 2)

-3.125

%


01:44.9

Long Term Fuel Trim (Bank 2)

-3.125

%


01:45.0

Intake Manifold Absolute Pressure

4.057971014

psi


01:45.1

Engine RPM

3317.25

rpm


01:45.2

Vehicle Speed Sensor

1.875

mph


01:45.3

Ignition Timing Advance for #1 Cylinder

-42

deg


01:45.4

Intake Air Temperature

149

deg F


01:45.4

Air Flow Rate from Mass Air Flow Sensor

4.187923014

lb/min


01:45.5

Absolute Throttle Position

20

%


01:45.6

Commanded Secondary Air Status

OFF: Atmosphere / Off

null[/align]this is the freeze frame data from my 1996 camaro z28 it is showing a P0301 trouble code and i have already replaced the opti, plugs, plug wires, coil, 2 o2 sensors, fuel pump and fuel filter does anybody know what would be causing this??

 

P0301 is misfire on cylinder #1. Considering all the stuff you have replaced already, the likely suspect is a bad #1 injector, or a mechanical problem in cylinder #1. Recheck the #1 plug & plug wire, make sure the plug wire is routed properly, not burned against the exhaust or damaged and shorting out or cross firing. Do a compression test & see how cyl #1 compares to the others, get a NOID lite & verify that the #1 injector is being fired, swap #1 injector with one of the other & see if the trouble moves to a different cylinder. For proper combustion you need spark, compression, and fuel. And they need to be delivered at the proper time and quantity.