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P0303 Diagnostic Trouble Code Discussion for September 2009

Cylinder 3 Misfire Detected


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Trouble Ticket Help Requests for DTC P0303
Help Request Posted
2005 Ford F-150 XLT 5.4L Poor Idle Quality, lack of power VIN: 1FTPF12545
P0303: 3 miss. truck came in on tow truck, tried to start it has a raw fuel smell doesnt race up. with misfire codes in it I checked for spark, has that, noid light flashes so I pull plugs on bank one, fuel soaked so I lift injector rail #s 2-3 running fuel #s 1-4 drip. repl...
September 02, 2009
1997 Dodge Ram 1500 Truck 5.9L Poor Idle Quality, Misfire VIN: 1B7HF16Z8V
P0303: Cylinder 3 Misfire Detected. ... ram 1500 5.9l came in for a maintance about a month ago did plugs cap rotor etc. retested truck ran great. 3 weeks passed and customer call said was running poor s.e.s light on. he stop in scaned and found p0301,2,3,4,,5,6...
September 03, 2009
2004 Mercury Mountaineer Premier 4.0L Misfire, MIL Lamp on VIN: 4M2ZU86K74
P0303: 3 cylinder missfire. Hi guys! Im pulling my hair out here. This vehicle came in with a vibration that felt like a engine miss but with no codes. Fuel pressure tested with in specs,Scan tool reading was good. I found a bulletin for idle quality update. I had all the updates brought...
September 04, 2009
1998 Honda Accord LX 3.0L MIL Lamp on VIN: 1HGCG164XW
P0303: Cylinder 3 Misfire Detected. I have misfire codes P0300 thru P0306. Customer had no complaints. Car runs excellent. Ignition parts are not new but they look OK. I cleared the codes and tried to reset the codes but couldn't. Freeze frame data: rpm - 5700 RPM, VEH SPEED - 52 MPH, LTFT - 2.0...
September 14, 2009
2005 Audi A4 Quattro 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WAULC68E15
P0303: misfire 3 cyl. runs very rough and mil flashes at idle. runs fine with foot on brake and in gear if rpm is above 1100 rpm. MAF reads higher than alldata says it should at idle. checked power, ground and 5 volt ref. all ok. Replaced MAF with new bosch from aftermarket suppli...
September 15, 2009
1998 Dodge B1500 3.9L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2B6HB11X9W
P0303: Cylinder 3 Misfire Detected. Returned day later with same codes. Checked misfire counts were continuous on #3 and #6. Misfire went away under load, or off idle. Checked for plenum leak (no vac at dipstick when pcv and vent blocked off). Swapped inj, no change. Ran fuel system cleaner thro...
September 15, 2009
2003 Mercedes-Benz C230 Kompressor 1.8L Misfire, MIL Lamp on VIN: WDBRN40J83
P0303: misfire cyl 3. Vehicle came in misfiring, starts and runs 15 to 20 seconds before misfire occurs. swapped coils, no change, found 120 psi on cyl 2, added transfluid with no increae in compression. checked injector pulse and found that the first 20 to 30 rpms the noid flashes...
September 16, 2009
2003 Cadillac CTS 3.2L Poor Idle Quality, Misfire VIN: 1G6DM57N13
P0303: Cylinder 3 Misfire Detected. vehicle came in with check engine light flashing and codes po300, po301, po303 and po305 all on the right bank. vehicle only misses at an idle. bring idle up to 1200 rpm, misfires stop. while at an idle, engine runs rough but not like all 3 cylinders are dead....
September 18, 2009
2004 Mercury Monterey (Van) 4.2L Misfire, MIL Lamp on VIN: 2MRZA20224
Hi All,This vehicle vame in with new coil,plugs,wires,fuel filter,EGR valve and DPFE sensor.Vehicle still misses intermittently but does not store codes immediately.Checked all previous repairs and found all satisfactory.Misses stronger at highway speed.At 120...
September 18, 2009
2000 Jaguar XJ8 L 4.0L Misfire, MIL Lamp on VIN: SAJDA23C5Y
P0303: 3 misfire. I know that it has a misfire. I just need to know which is cylinder position #3? i.e. what position on the engine. My database does not include Euro cars. This is my own personal car. I appreciate any help that you may offer.
September 22, 2009
1998 Chrysler Cirrus LXi 2.5L Cuts out, Misfire, MIL Lamp on VIN: 1C3EJ56H4W
P0303: Cylinder 3 Misfire Detected. probelm intermittent-replaced ASD relay. Customer states that when issue occurs that cruise control light is on. any suggestions appreciated
September 24, 2009
2002 Mercedes-Benz ML320 3.2L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 4JGAB54E12
P0303: misfire cylinder 3. Hello all you mercedes techs out there, this one is killing us. We have changed everythign and still the same codes are popping up, sorry it's been a long day and I don't feel like going to my other dest to get the benz codes so I just entered the odb11 codes ...
September 24, 2009
1999 Oldsmobile Intrigue GL 3.5L Misfire, MIL Lamp on
P0303: cyl 3 misfire. This car originally came to us for an New york state inspection. the customer was upset when they found out it had failed the emissions portion due to an "illuminated" mil. WRONG, the MIL is inop. KoEo shows no activity. Cannot command it with a scanne...
September 25, 2009
2003 Saab 9-5 Arc 3.0L MIL Lamp on VIN: YS3ED49203
P0303: 3 cyl. misfire. vehicle came in w/ misfire code on #3 cyl, unable to feel any misfire at all after test drive, no customer complaints about misfire or miss,noticed that spark plugs had not been changed so went ahead and replaced spark plugs, customer picked up vehicle and cam...
September 28, 2009
2000 Volkswagen Beetle GLS 2.0L Misfire VIN: 3VWCC21C9Y
P0303: . Hello and thanks in advance i have this beetle driving me crazy . # 3 cyl is dead for the first 60 seconds of operation, cold only first thing in the morning then fine All day long. This car runs great after this full power no stubbles or hesitaion. I saw a ts...
September 30, 2009
2005 Ford F-150 XLT 5.4L Poor Idle Quality, lack of power VIN: 1FTPF12545
P0303: 3 miss. truck came in on tow truck, tried to start it has a raw fuel smell doesnt race up. with misfire codes in it I checked for spark, has that, noid light flashes so I pull plugs on bank one, fuel soaked so I lift injector rail #s 2-3 running fuel #s 1-4 drip. repl...
September 02, 2009
1997 Dodge Ram 1500 Truck 5.9L Poor Idle Quality, Misfire VIN: 1B7HF16Z8V
P0303: Cylinder 3 Misfire Detected. ... ram 1500 5.9l came in for a maintance about a month ago did plugs cap rotor etc. retested truck ran great. 3 weeks passed and customer call said was running poor s.e.s light on. he stop in scaned and found p0301,2,3,4,,5,6...
September 03, 2009
2004 Mercury Mountaineer Premier 4.0L Misfire, MIL Lamp on VIN: 4M2ZU86K74
P0303: 3 cylinder missfire. Hi guys! Im pulling my hair out here. This vehicle came in with a vibration that felt like a engine miss but with no codes. Fuel pressure tested with in specs,Scan tool reading was good. I found a bulletin for idle quality update. I had all the updates brought...
September 04, 2009
1998 Honda Accord LX 3.0L MIL Lamp on VIN: 1HGCG164XW
P0303: Cylinder 3 Misfire Detected. I have misfire codes P0300 thru P0306. Customer had no complaints. Car runs excellent. Ignition parts are not new but they look OK. I cleared the codes and tried to reset the codes but couldn't. Freeze frame data: rpm - 5700 RPM, VEH SPEED - 52 MPH, LTFT - 2.0...
September 14, 2009
2005 Audi A4 Quattro 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WAULC68E15
P0303: misfire 3 cyl. runs very rough and mil flashes at idle. runs fine with foot on brake and in gear if rpm is above 1100 rpm. MAF reads higher than alldata says it should at idle. checked power, ground and 5 volt ref. all ok. Replaced MAF with new bosch from aftermarket suppli...
September 15, 2009
1998 Dodge B1500 3.9L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2B6HB11X9W
P0303: Cylinder 3 Misfire Detected. Returned day later with same codes. Checked misfire counts were continuous on #3 and #6. Misfire went away under load, or off idle. Checked for plenum leak (no vac at dipstick when pcv and vent blocked off). Swapped inj, no change. Ran fuel system cleaner thro...
September 15, 2009
2003 Mercedes-Benz C230 Kompressor 1.8L Misfire, MIL Lamp on VIN: WDBRN40J83
P0303: misfire cyl 3. Vehicle came in misfiring, starts and runs 15 to 20 seconds before misfire occurs. swapped coils, no change, found 120 psi on cyl 2, added transfluid with no increae in compression. checked injector pulse and found that the first 20 to 30 rpms the noid flashes...
September 16, 2009
2003 Cadillac CTS 3.2L Poor Idle Quality, Misfire VIN: 1G6DM57N13
P0303: Cylinder 3 Misfire Detected. vehicle came in with check engine light flashing and codes po300, po301, po303 and po305 all on the right bank. vehicle only misses at an idle. bring idle up to 1200 rpm, misfires stop. while at an idle, engine runs rough but not like all 3 cylinders are dead....
September 18, 2009
2004 Mercury Monterey (Van) 4.2L Misfire, MIL Lamp on VIN: 2MRZA20224
Hi All,This vehicle vame in with new coil,plugs,wires,fuel filter,EGR valve and DPFE sensor.Vehicle still misses intermittently but does not store codes immediately.Checked all previous repairs and found all satisfactory.Misses stronger at highway speed.At 120...
September 18, 2009
2000 Jaguar XJ8 L 4.0L Misfire, MIL Lamp on VIN: SAJDA23C5Y
P0303: 3 misfire. I know that it has a misfire. I just need to know which is cylinder position #3? i.e. what position on the engine. My database does not include Euro cars. This is my own personal car. I appreciate any help that you may offer.
September 22, 2009
1998 Chrysler Cirrus LXi 2.5L Cuts out, Misfire, MIL Lamp on VIN: 1C3EJ56H4W
P0303: Cylinder 3 Misfire Detected. probelm intermittent-replaced ASD relay. Customer states that when issue occurs that cruise control light is on. any suggestions appreciated
September 24, 2009
2002 Mercedes-Benz ML320 3.2L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 4JGAB54E12
P0303: misfire cylinder 3. Hello all you mercedes techs out there, this one is killing us. We have changed everythign and still the same codes are popping up, sorry it's been a long day and I don't feel like going to my other dest to get the benz codes so I just entered the odb11 codes ...
September 24, 2009
1999 Oldsmobile Intrigue GL 3.5L Misfire, MIL Lamp on
P0303: cyl 3 misfire. This car originally came to us for an New york state inspection. the customer was upset when they found out it had failed the emissions portion due to an "illuminated" mil. WRONG, the MIL is inop. KoEo shows no activity. Cannot command it with a scanne...
September 25, 2009
2003 Saab 9-5 Arc 3.0L MIL Lamp on VIN: YS3ED49203
P0303: 3 cyl. misfire. vehicle came in w/ misfire code on #3 cyl, unable to feel any misfire at all after test drive, no customer complaints about misfire or miss,noticed that spark plugs had not been changed so went ahead and replaced spark plugs, customer picked up vehicle and cam...
September 28, 2009
2000 Volkswagen Beetle GLS 2.0L Misfire VIN: 3VWCC21C9Y
P0303: . Hello and thanks in advance i have this beetle driving me crazy . # 3 cyl is dead for the first 60 seconds of operation, cold only first thing in the morning then fine All day long. This car runs great after this full power no stubbles or hesitaion. I saw a ts...
September 30, 2009