P0300 Diagnostic Trouble Code Discussion for November 2021
Multiple Misfire Detected
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| Help Request | Posted | |
| 2014 Audi SQ5 Premium Plus 3.0L Poor Idle Quality VIN: WA1CGAFP0E The car came in for a crankcase breather replacement for oil usage, owners diagnosis not mine. I replaced the crankcase breather and performed a walnut blasting of the intake valves. Afterwards the engine has a rough kind of lumpy idle and will eventually ... |
November 08, 2021 | |
| 2014 Audi SQ5 Premium Plus 3.0L Poor Idle Quality VIN: WA1CGAFP0E The car came in for a crankcase breather replacement for oil usage, owners diagnosis not mine. I replaced the crankcase breather and performed a walnut blasting of the intake valves. Afterwards the engine has a rough kind of lumpy idle and will eventually ... |
November 11, 2021 | |
| 2010 Pontiac G6 GT 3.5L Hesitation, Misfire, MIL Lamp on VIN: 1G2ZA5EK9A P0300: Random misfire. ... at over 25% throttle the engine starts to break up. Misfires setting p0300. Under 25% throttle itâs fine. Misfires only showing on cylinders 1,3, and 5 when looking at data. Spark plugs, wires, mass airflow sensor have been replaced. No signs of vacuu... |
November 11, 2021 | |
| 2013 Chevrolet Silverado 2500 HD LT 6.0L Misfire VIN: 1GC0KVCG9D P0300: Random cylinder misfire. Truck misfires bad on bank 1. O2's seemed a little lazy so I replaced them. Did not help. Short term fuel trim is -18 and long term fuel trim is -26 on bank 1 at idle. Bank 2 fuel trims are at 0. Do these have common intake leaks or injector problems. Any ... |
November 12, 2021 | |
| 2010 Pontiac G6 GT 3.5L Hesitation, Misfire, MIL Lamp on VIN: 1G2ZA5EK9A P0300: Random misfire. ... at over 25% throttle the engine starts to break up. Misfires setting p0300. Under 25% throttle it’s fine. Misfires only showing on cylinders 1,3, and 5 when looking at data. Spark plugs, wires, mass airflow sensor have been replaced. No signs of vacuu... |
November 12, 2021 | |
| 2013 Chevrolet Silverado 2500 HD LT 6.0L Misfire VIN: 1GC0KVCG9D P0300: Random cylinder misfire. Truck misfires bad on bank 1. O2's seemed a little lazy so I replaced them. Did not help. Short term fuel trim is -18 and long term fuel trim is -26 on bank 1 at idle. Bank 2 fuel trims are at 0. Do these have common intake leaks or injector problems. Any ... |
November 16, 2021 | |
| 2008 Mercedes-Benz S550 5.5L Misfire VIN: WDDNG71X78 P0300: misfire. ... to have the #1 and #6 misfires.. every one says injector but i have replaced with no improvement..i have never seen the p0201/p0206 before and i feel sure that there is some quirk to this... |
November 22, 2021 |
