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P0303 Diagnostic Trouble Code Discussion for June 2014

Cylinder 3 Misfire Detected


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Trouble Ticket Help Requests for DTC P0303
Help Request Posted
2003 Kia Optima SE 2.7L Misfire, MIL Lamp on VIN: KNAGD12813
P0303: Cylinder 3 Misfire Detected. I am really sick of this car. customer has been complaining of poor running, check engine light on. This car would come in with the hose in front of the MAF disconnected so we checked the motor mounts they were toast we replaced the mounts then still had misfi...
June 12, 2014
2004 Nissan Maxima SL 3.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1N4BA41E84
P0303: Cylinder 3 Misfire Detected. came in with misfires on cyls 1 & 3, removed coils an found had MELTED those 2.. Rechecked the ground cables, and sent PCM out for repair.. Re-installed PCM and replaced the coils with O.E.M. units along with new plugs.. Came back about 1 week later, with ...
June 16, 2014
2004 Ford F-150 FX4 5.4L Misfire, MIL Lamp on VIN: 1FTPW14514
P0303: 3 misfire. This vehicle came to us after 3 other shops. They had changed plugs, 1 coil, air filter, fuel filter, it only misses at about 45 mph and above, under a cruise or slight load. We checked the plug on #3 and the coil. Moved them to #2 cylinder. Still has po303, a...
June 25, 2014
2001 Ford Taurus SE 4-Valve 3.0L Poor Idle Quality, Misfire
P0303: cyl 3 misfire. I need some help with this problem child. This car runs but misfires badly and running lean. Already did leaking intake gaskets and resmoked multiple times no more leaks found Besides the small holes in egr valve replaced with new same thing. This car misfires...
June 26, 2014
2001 Ford Taurus SE 4-Valve 3.0L Poor Idle Quality, Misfire
P0303: cyl 3 misfire. I need some help with this problem child. This car runs but misfires badly and running lean. Already did leaking intake gaskets and resmoked multiple times no more leaks found Besides the small holes in egr valve replaced with new same thing. This car misfires...
June 28, 2014