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02 Tahoe Heavy Misfire P0300
Ordered a rebuilt ECU. I think this is the issue after speaking with previous owner. Hopefully it works will let u guys know. Thanks- D M 3
- Post #16
- Forum: Engine & Drivetrain
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02 Tahoe Heavy Misfire P0300
Ill look at it in the morning. Gonna check some things on it.- D M 3
- Post #12
- Forum: Engine & Drivetrain
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02 Tahoe Heavy Misfire P0300
No Definitley not. Idk why but its mechanical.- D M 3
- Post #10
- Forum: Engine & Drivetrain
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02 Tahoe Heavy Misfire P0300
By the way i dont think my throttle body is electronic it has cables.- D M 3
- Post #8
- Forum: Engine & Drivetrain
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02 Tahoe Heavy Misfire P0300
Thanks. No reduced engine power, havent checked compression yet. I was thinking maybe wiring issue. Yes it smokes out the exhaust but its only fuel coming out not coolant. Checked it for vacuum leaks with starting fluid no change, no coolant in oil or oil in coolant. Truck has 150k on it and...- D M 3
- Post #5
- Forum: Engine & Drivetrain
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02 Tahoe Heavy Misfire P0300
I just picked up an 02 Tahoe 5.3. Previous owner tried to fix the issue but failed. The truck is running rich and only has a P0300 code. Its stumbles at start up and gradually gets worse and cuts off. Cats have been changed, coils, Intake Gaskets, O2 Sensors, Fuel Pressure Reg. ,Map Sensor. Fuel...- D M 3
- Thread
- Replies: 16
- Forum: Engine & Drivetrain
