Join Now
International Automotive Technicians Network

P0303 Diagnostic Trouble Code Discussion for March 2009

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
2001 Mercury Sable LS Premium 3.0L Poor Idle Quality, Hesitation, Surge, Stall, Misfire, MIL Lamp on VIN: 1MEHM55S41
P0303: missfire. This car barely runs when cold,wont idle, surges at idle. first off sets missfire code on 1 and 3. After it warms up a bit it will set the lean codes, after it has warmed up the car runs great and idles smoothly. I swear i hear a vacum leak but on checking mos...
March 02, 2009
2005 Jaguar S-Type Sport 4.2L Misfire VIN: SAJWA0IU75
... but this one belongs to a long tone good customer. The car runs and drives fine. It came in with p0300, p0301, p0303, p0305, p0307, and p1316. customer stated that car was missing. but now seems fine. Just wondering where to start on this one and would gre...
March 03, 2009
1999 Ford F-150 4.2L Misfire VIN: 1FTZY1726X
P0303: miss 3 cylinder. Skips on all cylinder on right bank.rechecked spark.injector pluse,pulled injectors to check.compression test 180 psi
March 06, 2009
2001 Jeep Grand Cherokee Laredo 4.0L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1J4GW48S61
P0303: Cylinder 3 Misfire Detected. Vehicle came in with a no start condition. No fuel pressure and a crank postion code P0320. Replaced the crank sensor and the fuel pump. Vehicle drove good until it go hot (15-20mins). The misfire codes popped up and the vehicle misfired bad. Checked the synce...
March 10, 2009
1998 Toyota 4Runner SR5 3.4L Misfire VIN: JT3HN86R1W
P0303: Cylinder 3 Misfire Detected. Vehicle was brought in with check engine light on and intermittently runs rough. p 303. cleared code, had customer come back since it was friday afternoon. check eng light stayed off. still int ran rough. normal diagnostics found nothing abnormal. plugs & ...
March 10, 2009
1999 Toyota 4Runner SR5 3.4L Hesitation, Misfire, MIL Lamp on VIN: JT3HN86R9X
P0303: Cylinder 3 Misfire Detected. Hello there I have this 4 Runner with what seems to be a simple misfire issue. I have check plugs wires and coils and it still will misfire especially on #3. I have switched plugs wires and coils around and it still has a problem. It also has a no power when a...
March 11, 2009
2000 Volkswagen Jetta GLS 2.8L Misfire, MIL Lamp on, NOISE VIN: 3VWSE29M7Y
P0303: miss 3. hey guys! car came in complaning of no pwr, missing, and knocking noise in eng. i thought at first it had a broken rod!! lol. it is hammering! but it is more top end, comming from intake runner area. but real loud. i movr the runner down and it changes tone sn...
March 11, 2009
1997 Toyota Camry CE 2.2L MIL Lamp on VIN: 4TB1G22K5V
P0303: Cylinder 3 Misfire Detected. This toyota was worked on at a friends shop and was sent to me for help. Car needs to be inspected. The list above tells the tale of parts that have been installed or tried. When I got car I test drove after clearing trouble codes for 30 miles. The car never m...
March 12, 2009
2000 Ford Explorer XLS 5.0L Misfire VIN: 1FMZU72X1Y
P0303: 3 miss fire. truck misses on start up when cold replaced plug wire, switched plug #1 to #3 still misses when cold on #3 spark plug looks like a lean condition do the intake gaskets go bad on these engines? thanks for any help mark
March 17, 2009
2002 Honda Accord Value Package 2.3L Cuts out, Misfire VIN: 1HGCF86652
P0303: Cylinder 3 Misfire Detected. Honda specialists, please help. This car will level out at about 4500 RPM's under full throttle and will not speed up at all or shift to second gear when it reaches this point unless you start to let off of the gas pedal some and then it will go ahead and shif...
March 17, 2009
2002 Jaguar S-Type 4.0L Misfire, MIL Lamp on VIN: SAJDA01P82
... codes P0300 & P0303. i swapped # 1 & # 3 coils. reset mil light and took it for a test drive. it cant get out of its own way and then set codes P0300 P0302 P0303 P0304 P0306. i have checked iatn for same problems and looked over the car with what o...
March 17, 2009
1997 Toyota Camry CE 2.2L MIL Lamp on VIN: 4TB1G22K5V
P0303: Cylinder 3 Misfire Detected. This toyota was worked on at a friends shop and was sent to me for help. Car needs to be inspected. The list above tells the tale of parts that have been installed or tried. When I got car I test drove after clearing trouble codes for 30 miles. The car never m...
March 18, 2009
2004 Dodge Neon SXT 2.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1B3ES56C34
P0303: Cylinder 3 Misfire Detected. Hello, we have a neon with a misfire that hopefully someone out there has seen before. It came in as a check engine light with codes p0300, and po303. We replaced plugs with champions and customer left. A few days later she was back with the same codes, so we ...
March 20, 2009
2002 Honda Accord Value Package 2.3L Cuts out, Misfire VIN: 1HGCF86652
P0303: Cylinder 3 Misfire Detected. Honda specialists, please help. This car will level out at about 4500 RPM's under full throttle and will not speed up at all or shift to second gear when it reaches this point unless you start to let off of the gas pedal some and then it will go ahead and shif...
March 20, 2009
2002 Toyota Camry SE 2.4L Excessive Emissions, Misfire, MIL Lamp on VIN: 1GCCS1442T
P0303: Cylinder 3 Misfire Detected. not to much exp on toyota 1 month ago customer brings in car has po442 decined looking into code,car run ok,now problem with idel and shows slight misfire,lean bk 1,dont know toyota to well,and would like to know what direction to take from you guys,fuel press...
March 20, 2009
2006 Ford F-150 XL 5.4L MIL Lamp on VIN: 1FTF2G3L16
P0303: missfire. ... runs extremly rough at times check eng light flashing. pulled codes, p0305 changed plugs,boots filters,2 plugs # 5 and 8 were obvisously bad. work completed,clear codes and test drove, never able to duplicate the problem,we figured the plugs were the probl...
March 21, 2009
2001 Jeep Cherokee Sport 4.0L MIL Lamp on VIN: 1J4FT47S51
P0303: Cylinder 3 Misfire Detected. Hello group, I have one that has been wished on me. This truck was involved in an accident. The owner hit a deer on the driver side front corner. The car was taken to a body shop and repaired. I have found several things that were left undone. Those I have rep...
March 23, 2009
1996 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: 1J4GZ58S3T
P0303: Cylinder 3 Misfire Detected. Hi guys This thing is a normal customer. Came in for a smog pre-test. He knew his Check Engine light was on. I performed the Calif. TSI test. The car passes emissions, But failed for P0300,301,302,303,304,305, AND 306. The local dealer had replaced the pcm 3 ...
March 24, 2009
2002 Toyota Camry SE 2.4L Excessive Emissions, Misfire, MIL Lamp on VIN: 1GCCS1442T
P0303: Cylinder 3 Misfire Detected. not to much exp on toyota 1 month ago customer brings in car has po442 decined looking into code,car run ok,now problem with idel and shows slight misfire,lean bk 1,dont know toyota to well,and would like to know what direction to take from you guys,fuel press...
March 24, 2009
2003 Audi A4 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WAULC68E13
P0303: Misfire cyl 3. ... car came in with a check engine light and unstable idle. we checked the codes and had a P0171 lean bank 1, p0328 knock sensor circuit high input, p0300, p0301, p0302, p0303,p0304 all misfire codes. The MAF was defective ...
March 28, 2009
2005 Mercedes-Benz SLK350 3.5L Misfire VIN: WDBWK56F75
P0303: misfire cyl. 3. Thanks as always fellow technicians Mil is on, all misfire codes and mixture codes for rt. bank of cylinders, If this was a M112 or M113 I'd be sending him to the dealer for warranty catalyst replacement on the rt. bank. I have only worked on a few of the M272...
March 30, 2009
2005 Mercedes-Benz SLK350 3.5L Misfire VIN: WDBWK56F75
P0303: misfire cyl. 3. Thanks as always fellow technicians Mil is on, all misfire codes and mixture codes for rt. bank of cylinders, If this was a M112 or M113 I'd be sending him to the dealer for warranty catalyst replacement on the rt. bank. I have only worked on a few of the M272...
March 31, 2009
2001 Mercury Sable LS Premium 3.0L Poor Idle Quality, Hesitation, Surge, Stall, Misfire, MIL Lamp on VIN: 1MEHM55S41
P0303: missfire. This car barely runs when cold,wont idle, surges at idle. first off sets missfire code on 1 and 3. After it warms up a bit it will set the lean codes, after it has warmed up the car runs great and idles smoothly. I swear i hear a vacum leak but on checking mos...
March 02, 2009
2005 Jaguar S-Type Sport 4.2L Misfire VIN: SAJWA0IU75
... but this one belongs to a long tone good customer. The car runs and drives fine. It came in with p0300, p0301, p0303, p0305, p0307, and p1316. customer stated that car was missing. but now seems fine. Just wondering where to start on this one and would gre...
March 03, 2009
1999 Ford F-150 4.2L Misfire VIN: 1FTZY1726X
P0303: miss 3 cylinder. Skips on all cylinder on right bank.rechecked spark.injector pluse,pulled injectors to check.compression test 180 psi
March 06, 2009
2001 Jeep Grand Cherokee Laredo 4.0L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1J4GW48S61
P0303: Cylinder 3 Misfire Detected. Vehicle came in with a no start condition. No fuel pressure and a crank postion code P0320. Replaced the crank sensor and the fuel pump. Vehicle drove good until it go hot (15-20mins). The misfire codes popped up and the vehicle misfired bad. Checked the synce...
March 10, 2009
1998 Toyota 4Runner SR5 3.4L Misfire VIN: JT3HN86R1W
P0303: Cylinder 3 Misfire Detected. Vehicle was brought in with check engine light on and intermittently runs rough. p 303. cleared code, had customer come back since it was friday afternoon. check eng light stayed off. still int ran rough. normal diagnostics found nothing abnormal. plugs & ...
March 10, 2009
1999 Toyota 4Runner SR5 3.4L Hesitation, Misfire, MIL Lamp on VIN: JT3HN86R9X
P0303: Cylinder 3 Misfire Detected. Hello there I have this 4 Runner with what seems to be a simple misfire issue. I have check plugs wires and coils and it still will misfire especially on #3. I have switched plugs wires and coils around and it still has a problem. It also has a no power when a...
March 11, 2009
2000 Volkswagen Jetta GLS 2.8L Misfire, MIL Lamp on, NOISE VIN: 3VWSE29M7Y
P0303: miss 3. hey guys! car came in complaning of no pwr, missing, and knocking noise in eng. i thought at first it had a broken rod!! lol. it is hammering! but it is more top end, comming from intake runner area. but real loud. i movr the runner down and it changes tone sn...
March 11, 2009
1997 Toyota Camry CE 2.2L MIL Lamp on VIN: 4TB1G22K5V
P0303: Cylinder 3 Misfire Detected. This toyota was worked on at a friends shop and was sent to me for help. Car needs to be inspected. The list above tells the tale of parts that have been installed or tried. When I got car I test drove after clearing trouble codes for 30 miles. The car never m...
March 12, 2009
2000 Ford Explorer XLS 5.0L Misfire VIN: 1FMZU72X1Y
P0303: 3 miss fire. truck misses on start up when cold replaced plug wire, switched plug #1 to #3 still misses when cold on #3 spark plug looks like a lean condition do the intake gaskets go bad on these engines? thanks for any help mark
March 17, 2009
2002 Honda Accord Value Package 2.3L Cuts out, Misfire VIN: 1HGCF86652
P0303: Cylinder 3 Misfire Detected. Honda specialists, please help. This car will level out at about 4500 RPM's under full throttle and will not speed up at all or shift to second gear when it reaches this point unless you start to let off of the gas pedal some and then it will go ahead and shif...
March 17, 2009
2002 Jaguar S-Type 4.0L Misfire, MIL Lamp on VIN: SAJDA01P82
... codes P0300 & P0303. i swapped # 1 & # 3 coils. reset mil light and took it for a test drive. it cant get out of its own way and then set codes P0300 P0302 P0303 P0304 P0306. i have checked iatn for same problems and looked over the car with what o...
March 17, 2009
1997 Toyota Camry CE 2.2L MIL Lamp on VIN: 4TB1G22K5V
P0303: Cylinder 3 Misfire Detected. This toyota was worked on at a friends shop and was sent to me for help. Car needs to be inspected. The list above tells the tale of parts that have been installed or tried. When I got car I test drove after clearing trouble codes for 30 miles. The car never m...
March 18, 2009
2004 Dodge Neon SXT 2.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1B3ES56C34
P0303: Cylinder 3 Misfire Detected. Hello, we have a neon with a misfire that hopefully someone out there has seen before. It came in as a check engine light with codes p0300, and po303. We replaced plugs with champions and customer left. A few days later she was back with the same codes, so we ...
March 20, 2009
2002 Honda Accord Value Package 2.3L Cuts out, Misfire VIN: 1HGCF86652
P0303: Cylinder 3 Misfire Detected. Honda specialists, please help. This car will level out at about 4500 RPM's under full throttle and will not speed up at all or shift to second gear when it reaches this point unless you start to let off of the gas pedal some and then it will go ahead and shif...
March 20, 2009
2002 Toyota Camry SE 2.4L Excessive Emissions, Misfire, MIL Lamp on VIN: 1GCCS1442T
P0303: Cylinder 3 Misfire Detected. not to much exp on toyota 1 month ago customer brings in car has po442 decined looking into code,car run ok,now problem with idel and shows slight misfire,lean bk 1,dont know toyota to well,and would like to know what direction to take from you guys,fuel press...
March 20, 2009
2006 Ford F-150 XL 5.4L MIL Lamp on VIN: 1FTF2G3L16
P0303: missfire. ... runs extremly rough at times check eng light flashing. pulled codes, p0305 changed plugs,boots filters,2 plugs # 5 and 8 were obvisously bad. work completed,clear codes and test drove, never able to duplicate the problem,we figured the plugs were the probl...
March 21, 2009
2001 Jeep Cherokee Sport 4.0L MIL Lamp on VIN: 1J4FT47S51
P0303: Cylinder 3 Misfire Detected. Hello group, I have one that has been wished on me. This truck was involved in an accident. The owner hit a deer on the driver side front corner. The car was taken to a body shop and repaired. I have found several things that were left undone. Those I have rep...
March 23, 2009
1996 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: 1J4GZ58S3T
P0303: Cylinder 3 Misfire Detected. Hi guys This thing is a normal customer. Came in for a smog pre-test. He knew his Check Engine light was on. I performed the Calif. TSI test. The car passes emissions, But failed for P0300,301,302,303,304,305, AND 306. The local dealer had replaced the pcm 3 ...
March 24, 2009
2002 Toyota Camry SE 2.4L Excessive Emissions, Misfire, MIL Lamp on VIN: 1GCCS1442T
P0303: Cylinder 3 Misfire Detected. not to much exp on toyota 1 month ago customer brings in car has po442 decined looking into code,car run ok,now problem with idel and shows slight misfire,lean bk 1,dont know toyota to well,and would like to know what direction to take from you guys,fuel press...
March 24, 2009
2003 Audi A4 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WAULC68E13
P0303: Misfire cyl 3. ... car came in with a check engine light and unstable idle. we checked the codes and had a P0171 lean bank 1, p0328 knock sensor circuit high input, p0300, p0301, p0302, p0303,p0304 all misfire codes. The MAF was defective ...
March 28, 2009
2005 Mercedes-Benz SLK350 3.5L Misfire VIN: WDBWK56F75
P0303: misfire cyl. 3. Thanks as always fellow technicians Mil is on, all misfire codes and mixture codes for rt. bank of cylinders, If this was a M112 or M113 I'd be sending him to the dealer for warranty catalyst replacement on the rt. bank. I have only worked on a few of the M272...
March 30, 2009
2005 Mercedes-Benz SLK350 3.5L Misfire VIN: WDBWK56F75
P0303: misfire cyl. 3. Thanks as always fellow technicians Mil is on, all misfire codes and mixture codes for rt. bank of cylinders, If this was a M112 or M113 I'd be sending him to the dealer for warranty catalyst replacement on the rt. bank. I have only worked on a few of the M272...
March 31, 2009