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2003 Ford F-150 Lariat 5.4L Poor Idle Quality, Misfire, MIL Lamp on
I first looked at coil ramps all good! Then at injector ramps all good. The leak-down test looks good, relative compression looks good. In-cylinder pressure looks good although I am new to this type of test. Removed valve cover to inspect lash adjusters th...
FIX posted 9/1/2021
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Message Closed w/FIX
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10 Replies Received
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Related Documents & Media | VIN | 1FTRX08L93 |
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
| Occurs | Cold |
Trouble Codes
| P0301 | Cylinder 1 Misfire Detected |
| P0316 | Misfire Detected On Startup (Within the 1st 1000 Revolutions) |
Message Closed w/FIX
Vehicle Data
2003 Ford F-150 Lariat
| VIN | 1FTRX08L93 |
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
| Occurs | Cold |
Trouble Codes
| P0301 | Cylinder 1 Misfire Detected |
| P0316 | Misfire Detected On Startup (Within the 1st 1000 Revolutions) |
Video