Join Now
International Automotive Technicians Network

P0304 Diagnostic Trouble Code Discussion for August 2006

Cylinder 4 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 P0304
Help Request Posted
1999 Acura TL 3.2L Misfire, MIL Lamp on VIN: 19UUA5648X
P0304: Cylinder 4 Misfire Detected. Hello, Car came in with ck engine light on as well as TCS light, car runs poorly with obvious misfire occuring at all times. Besides above mentioned codes, the remaining cylinder misfire codes are set, and reset in a short test drive (less than 5 miles) as w...
August 09, 2006
1998 Chrysler Town & Country (Van) LX 3.3L Hesitation, Misfire, MIL Lamp on VIN: IP4GP44ROW
P0304: cyl 4 misfire. intermediate problem , happens when put into reverse gear real noticable mil light comes on stumble happens and sets codes. this problem also happens in drive but not as noticeable. it might be fine for a while and shows up the next day. fuel pressure stays at...
August 09, 2006
1999 Lexus RX300 3.0L Excessive Emissions, Misfire, Poor Fuel Economy, lacks power VIN: JT6HF10U3X
P0304: misfire 4. This vehicle has negative fuel trims on bank 2 and positive trims on bank 1. I tried swapped af sensors from side to side and trims remained the same. I have replaced MAF and 1 igntion coil. This suv has no power sounds like pinging under load. I have checked ...
August 10, 2006
2002 Ford Focus ZTW 2.0L MIL Lamp on VIN: 1FAFP36362
P0304: misfire cylinder number four. ... vehicle into the shop a few times in the past two weeks with the same code p0304 misfire cylinder number four. We have replaced the original spark plugs and wires with new from the dealer. We have tested and determined the ignition coil was faulty and repl...
August 14, 2006
2002 Ford Focus ZTW 2.0L MIL Lamp on VIN: 1FAFP36362
P0304: misfire cylinder number four. ... vehicle into the shop a few times in the past two weeks with the same code p0304 misfire cylinder number four. We have replaced the original spark plugs and wires with new from the dealer. We have tested and determined the ignition coil was faulty and repl...
August 15, 2006
2001 Mercedes-Benz ML320 3.2L MIL Lamp on VIN: 4JGAB54E51
Hi all, This ML 320 came in with missfire in 4 5 6 cylinders. The truck was shaking away. Pulled a plug all original. Changed spark plugs & ignition wires. Miss seemed better & test drove truck. During test drive check engine light came back on with le...
August 22, 2006
2001 Mercedes-Benz ML320 3.2L MIL Lamp on VIN: 4JGAB54E51
Hi all, This ML 320 came in with missfire in 4 5 6 cylinders. The truck was shaking away. Pulled a plug all original. Changed spark plugs & ignition wires. Miss seemed better & test drove truck. During test drive check engine light came back on with le...
August 23, 2006
2001 Subaru Outback VDC 3.0L MIL Lamp on
P0304: Cylinder 4 Misfire Detected. Thanks in advance for any help, I am wondering if the H6 has the same valve problems as the 2.5, valve adjustment and/or guide problems.AllData says about 4.5 to adjust valves on one side ,so I doen't want to go there unless it is suspect.I have not seen any ...
August 24, 2006
1999 Ford F-150 Lariat 5.4L Poor Idle Quality, Hesitation, Surge, Misfire VIN: 1FTRX18L3X
P0304: cylinder 4 miss fire. switched out #1 coil to #4 coil checked computer then siad number 1 miss fire so bought new coil put on place of #1 and ran great for a couple of weeks then bang run the same as last month checked computer and #4 missfire agian
August 26, 2006
1999 Acura TL 3.2L Misfire, MIL Lamp on VIN: 19UUA5648X
P0304: Cylinder 4 Misfire Detected. Hello, Car came in with ck engine light on as well as TCS light, car runs poorly with obvious misfire occuring at all times. Besides above mentioned codes, the remaining cylinder misfire codes are set, and reset in a short test drive (less than 5 miles) as w...
August 09, 2006
1998 Chrysler Town & Country (Van) LX 3.3L Hesitation, Misfire, MIL Lamp on VIN: IP4GP44ROW
P0304: cyl 4 misfire. intermediate problem , happens when put into reverse gear real noticable mil light comes on stumble happens and sets codes. this problem also happens in drive but not as noticeable. it might be fine for a while and shows up the next day. fuel pressure stays at...
August 09, 2006
1999 Lexus RX300 3.0L Excessive Emissions, Misfire, Poor Fuel Economy, lacks power VIN: JT6HF10U3X
P0304: misfire 4. This vehicle has negative fuel trims on bank 2 and positive trims on bank 1. I tried swapped af sensors from side to side and trims remained the same. I have replaced MAF and 1 igntion coil. This suv has no power sounds like pinging under load. I have checked ...
August 10, 2006
2002 Ford Focus ZTW 2.0L MIL Lamp on VIN: 1FAFP36362
P0304: misfire cylinder number four. ... vehicle into the shop a few times in the past two weeks with the same code p0304 misfire cylinder number four. We have replaced the original spark plugs and wires with new from the dealer. We have tested and determined the ignition coil was faulty and repl...
August 14, 2006
2002 Ford Focus ZTW 2.0L MIL Lamp on VIN: 1FAFP36362
P0304: misfire cylinder number four. ... vehicle into the shop a few times in the past two weeks with the same code p0304 misfire cylinder number four. We have replaced the original spark plugs and wires with new from the dealer. We have tested and determined the ignition coil was faulty and repl...
August 15, 2006
2001 Mercedes-Benz ML320 3.2L MIL Lamp on VIN: 4JGAB54E51
Hi all, This ML 320 came in with missfire in 4 5 6 cylinders. The truck was shaking away. Pulled a plug all original. Changed spark plugs & ignition wires. Miss seemed better & test drove truck. During test drive check engine light came back on with le...
August 22, 2006
2001 Mercedes-Benz ML320 3.2L MIL Lamp on VIN: 4JGAB54E51
Hi all, This ML 320 came in with missfire in 4 5 6 cylinders. The truck was shaking away. Pulled a plug all original. Changed spark plugs & ignition wires. Miss seemed better & test drove truck. During test drive check engine light came back on with le...
August 23, 2006
2001 Subaru Outback VDC 3.0L MIL Lamp on
P0304: Cylinder 4 Misfire Detected. Thanks in advance for any help, I am wondering if the H6 has the same valve problems as the 2.5, valve adjustment and/or guide problems.AllData says about 4.5 to adjust valves on one side ,so I doen't want to go there unless it is suspect.I have not seen any ...
August 24, 2006
1999 Ford F-150 Lariat 5.4L Poor Idle Quality, Hesitation, Surge, Misfire VIN: 1FTRX18L3X
P0304: cylinder 4 miss fire. switched out #1 coil to #4 coil checked computer then siad number 1 miss fire so bought new coil put on place of #1 and ran great for a couple of weeks then bang run the same as last month checked computer and #4 missfire agian
August 26, 2006