Join Now
International Automotive Technicians Network

P0303 Diagnostic Trouble Code Discussion for July 2004

Cylinder 3 Misfire Detected


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0303
Help Request Posted
1999 Saturn SL2 1.9L Misfire, MIL Lamp on VIN: 1G8ZJ5270X
P0303: Cylinder 3 Misfire Detected. Hello Everyone: I truly hope that one of my techs has helped someone in the past with a truly baffling problem!! Because, this Saturn is going to send me to Mars, Venus, and back!!! Like an idiot, I took on a SIMPLE engine swap from a local used car dealer o...
July 20, 2004
1999 Saturn SL2 1.9L Misfire, MIL Lamp on VIN: 1G8ZJ5270X
P0303: Cylinder 3 Misfire Detected. Hello Everyone: I truly hope that one of my techs has helped someone in the past with a truly baffling problem!! Because, this Saturn is going to send me to Mars, Venus, and back!!! Like an idiot, I took on a SIMPLE engine swap from a local used car dealer o...
July 21, 2004
1998 Porsche 911 Carrera 3.6L Poor Idle Quality, MIL Lamp on VIN: WP0CA2993W
P0303: Cyl 3 Misfire. Vehicle appears to run fine with the exception or a poor idle, 13" vac @ idle I suspect is due to a commanded ignition timing amount of 3 degrees. Vehicle runs good and appears to have plenty of power. When the MIL comes on and sets multiple cylinder misfi...
July 26, 2004
1997 Toyota 4Runner SR5 3.4L MIL Lamp on VIN: JT3HN86R4V
P0303: Cylinder 3 Misfire Detected. the check engine lite will come on and stay on for a day or two then go off. the customer does not complain of a miss in the engine just the light coming on and off.
July 28, 2004
1996 Ford Windstar GL 3.8L Misfire VIN: 2FMDA5143T
P0303: 3 cylinder misfire. we had this vehicle in two years ago, at 125,000 miles, for the same problem, #3 cylinder miss. We replaced the coil pack and ignition wires (someone had put Belden wires on it) the miss was still there. Removed plenum, found all EGR ports plugged except #3. C...
July 30, 2004
1999 Ford Explorer XL 4.0L Misfire, MIL Lamp on VIN: 1FMZU34X6X
P0303: cyl 3 misfire. car came in first time with a misfire #3 plug was not firing but looked fine so i replaced plug and ran fine. came back 4 months later with same problem same cylinder so i replaced all plugs and wires. did fine for three months same problem raplced plugs again...
July 30, 2004
1999 Saturn SL2 1.9L Misfire, MIL Lamp on VIN: 1G8ZJ5270X
P0303: Cylinder 3 Misfire Detected. Hello Everyone: I truly hope that one of my techs has helped someone in the past with a truly baffling problem!! Because, this Saturn is going to send me to Mars, Venus, and back!!! Like an idiot, I took on a SIMPLE engine swap from a local used car dealer o...
July 20, 2004
1999 Saturn SL2 1.9L Misfire, MIL Lamp on VIN: 1G8ZJ5270X
P0303: Cylinder 3 Misfire Detected. Hello Everyone: I truly hope that one of my techs has helped someone in the past with a truly baffling problem!! Because, this Saturn is going to send me to Mars, Venus, and back!!! Like an idiot, I took on a SIMPLE engine swap from a local used car dealer o...
July 21, 2004
1998 Porsche 911 Carrera 3.6L Poor Idle Quality, MIL Lamp on VIN: WP0CA2993W
P0303: Cyl 3 Misfire. Vehicle appears to run fine with the exception or a poor idle, 13" vac @ idle I suspect is due to a commanded ignition timing amount of 3 degrees. Vehicle runs good and appears to have plenty of power. When the MIL comes on and sets multiple cylinder misfi...
July 26, 2004
1997 Toyota 4Runner SR5 3.4L MIL Lamp on VIN: JT3HN86R4V
P0303: Cylinder 3 Misfire Detected. the check engine lite will come on and stay on for a day or two then go off. the customer does not complain of a miss in the engine just the light coming on and off.
July 28, 2004
1996 Ford Windstar GL 3.8L Misfire VIN: 2FMDA5143T
P0303: 3 cylinder misfire. we had this vehicle in two years ago, at 125,000 miles, for the same problem, #3 cylinder miss. We replaced the coil pack and ignition wires (someone had put Belden wires on it) the miss was still there. Removed plenum, found all EGR ports plugged except #3. C...
July 30, 2004
1999 Ford Explorer XL 4.0L Misfire, MIL Lamp on VIN: 1FMZU34X6X
P0303: cyl 3 misfire. car came in first time with a misfire #3 plug was not firing but looked fine so i replaced plug and ran fine. came back 4 months later with same problem same cylinder so i replaced all plugs and wires. did fine for three months same problem raplced plugs again...
July 30, 2004