1998 Chevy Silverado 4.3L V-6 Vortec engine, OBD II Code PO300?

William

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I have a 1998 Chevy Silverado that backfired on me as I was going up an on-ramp to the freeway. Then the vehicle died and would not fire. After I opened the hood to see what the problem could be it smelled strong with gasoline. I tried numerous times to crank it over but no firing. I just recently stalled and replaced the fuel pump and in-line fuel filter. I have a brand new distributor and spark plugs. I tested the number one plug and it is firing with a strong arc. Cranks but no start. This was the report from my PBD II. Can anyone suggest what else I can try before I throw in the towell and tow it to the shop.

Year: 1998
Manufacturer: General Motors
Make: Chevrolet
Model: C1500
Engine Type: V6, 4.3L; 90 deg.; CPI (Vortec)
Transmission: Standard
Trim Level: Base
Mileage: 139100



=== Stored Error Code(s) ===
Error Code: P0300
Possible Causes:

Error Code: P0420
Possible Causes:


=== Pending Error Code(s) ===
Error Code: P0420
Possible Causes:



Freeze Frame Information:
1. DTC for which Freeze Frame was Stored - P0300.
2. Fuel System 1 Status - Closed Loop.
3. Fuel System 2 Status - Closed Loop.
4. Calculated LOAD Value - 10.98 %.
5. Engine Coolant Temp - 188.60 °F.
6. Short Term Fuel Trim - Bank 1 - 5.47 %.
7. Long Term Fuel Trim - Bank 1 - 11.72 %.
8. Short Term Fuel Trim - Bank 2 - 6.25 %.
9. Long Term Fuel Trim - Bank 2 - 12.50 %.
10. Intake Manifold Absolute Pressure - 10.66 Inhg.
11. Engine RPM - 1,983.25 Rpm.
12. Vehicle Speed Sensor - 34.18 Mph.
13. Air Flow Rate Mass Air Flow Sensor - 2.44 Lb/Min.
14. Absolute Throttle Position - 7.45 %.


Monitor Information:

1. MIL - ON.
2. Misfire Monitor - Complete.
3. Fuel System Monitor - Complete.
4. CCM Monitor - Complete.
5. Catalyst Monitor - Complete.
6. Heated Catalyst Monitor - Not Supported.
7. EVAP Monitor - Not Complete.
8. Secondary Air System Monitor - Not Supported.
9. O2 Sensor Monitor - Complete.
10. O2 Sensor Heater Monitor - Complete.
11. EGR Monitor - Not Complete.
12. NMHC Monitor - Not Supported.
13. Nox Adsorber Monitor - Not Supported.
14. Boost Pressure System Monitor - Not Supported.
15. Exhaust Gas Sensor Monitor - Not Supported.
16. PM Filter Monitor - Not Supported.
 
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