P0300 Diagnostic Trouble Code Discussion for March 2023
Multiple Misfire Detected
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| Help Request | Posted | |
| 2001 Pontiac Bonneville SSEi 3.8L Poor Idle Quality, Misfire VIN: 1G2HZ54151 P0300: Multiple Engine Misfire Detected. Came in with ruff idle. Replace spark plugs. Checked wires. Came back a month later with lack of power, with missing. Had a miss fire on Cylinder 4. Checked wire and coil. Checked spark plug, it was cracked. Installed new one. Gave back to customer. Two da... |
March 01, 2023 | |
| 2013 Mercedes-Benz ML350 3.5L Misfire, MIL Lamp on VIN: 4JGDA5HB3D P0300: 85. Engine misfire on cylinder#4 seen on misfire counter at hot idle after snapping throttle. Severe misfire cylinder #4 occurs on hot re-start after sitting a few minutes. Misfire goes away by increasing RPM to 1000 or higher. Does anyone have experience with... |
March 15, 2023 | |
| 2009 Chevrolet Colorado WT 3.7L Poor Idle Quality, Stall, Misfire VIN: 1GCDT19E49 P0300: random misfire. This truck died on the road. When it came to the shop it would run on only 3 cylinders. I found good compression but between 25% and 46% leakdown. I pulled the head and sent it out for a valve job. After reinstalling the head, it still misfires but it won'... |
March 16, 2023 |
