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P0303 Diagnostic Trouble Code Discussion for January 2015

Cylinder 3 Misfire Detected


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Trouble Ticket Help Requests for DTC P0303
Help Request Posted
1998 Ford F-150 Lariat 5.4L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTRX17L8W
P0303: misfire 3 cyl. Ok, after reading the repair history, the customer came back, saying that truck was running worse. Scan data gave 4 codes. I had explained the last 2 times he was here that we needed to diag/repair the Fuel Pressure Sensor, because its reading a constant 5v. ...
January 06, 2015
2005 Ford Escape XLT 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FMYU93175
P0303: Cylinder Number 3 Misfire Detected. Reassemlbed heads on engine. It fired right up but runs on bank #2 only at idle. When rpms are increased to 1500 + it smooths out. We have 180 psi compresson on affected cylinders. We have confirmed spark at all 3 affected coils. We have swapped coils and plug...
January 09, 2015
2002 Audi A4 Quattro 3.0L MIL Lamp on VIN: WAULT68E12
P0303: cyl3. Car is in the shop for a check engine light. this is a regular customer of ours and she has spent a lot of money in the last few years on this car. we recently did 6 coils and plugs, we did Cats, a timing belt (about a year ago).. among other things The car n...
January 24, 2015
2009 Audi A4 Quattro 2.0L Misfire, MIL Lamp on VIN: WAULF78K79
P0303: cylinder 3 misfire. this car arrived from a local car lot with the check engine light on and a slight to moderate misfire at idle. On a cold start its almost not there. As it warms up it gets worse. By the time its up to temp, if you rev the motor a few times it really almost goe...
January 26, 2015
2005 Volkswagen Passat GLS 1.8L Misfire, MIL Lamp on VIN: WVWDD63BX5
P0303: Cyl 3 misfire. Clear codes and vehicle runs perfect. After driving under heavy load, vehicle will intermittently idle rough and misfire. Normal idle MAF reading is 3.5 g/s or so, when misfiring the MAF is reading between 7 and 10 g/s. Also when misfiring fuel trim will be ma...
January 28, 2015