P0300 Diagnostic Trouble Code Discussion for July 2023
Multiple Misfire Detected
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| Help Request | Posted | |
| 2007 Chevrolet Silverado 2500 HD Classic LT 6.0L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: 1GCHK23UX7 P0300: Random misfire. ... to always have something wrong. Customer complaint was, It started missing then died. Got it here and it fired right up and sounded pretty good. After it went into closed loop it started to get a miss. pinned it down to 2 cylinders. Swapped coils miss... |
July 10, 2023 | |
| 2007 Chevrolet Silverado 2500 HD Classic LT 6.0L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: 1GCHK23UX7 P0300: Random misfire. This one is driving me nuts. It seems to always have something wrong. Customer complaint was, It started missing then died. Got it here and it fired right up and sounded pretty good. After it went into closed loop it started to get a miss. pinned it down t... |
July 11, 2023 | |
| 2003 Lexus LS430 4.3L Misfire, MIL Lamp on VIN: JTHBN30F13 P0300: Multiple Cylinder Misfire Detected. This one is a mystery. Vehicle came in a month ago for overheating, a radiator hose burst and it puked the coolant out and blew a headgasket. We did headgaskets about a month ago, used all toyota parts, aisin timing belt kit. Had heads crack and pressure t... |
July 20, 2023 | |
| 2003 Lexus LS430 4.3L Misfire, MIL Lamp on VIN: JTHBN30F13 P0300: Multiple Cylinder Misfire Detected. This one is a mystery. Vehicle came in a month ago for overheating, a radiator hose burst and it puked the coolant out and blew a headgasket. We did headgaskets about a month ago, used all toyota parts, aisin timing belt kit. Had heads crack and pressure t... |
July 21, 2023 | |
| 2011 GMC Sierra 3500 HD SLE 6.0L Poor Idle Quality, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GT522CG8B P0300: random misfire. Vehicle runs rough and dies after 15 seconds while cold. Can warm it up and will run ok. ECT sensor appears to be reading correct. Replaced intake gaskets after found vacuum leak. Seemed like it got better but didnt. Have voltage drop tested coils, injecto... |
July 28, 2023 |
