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P0304 Diagnostic Trouble Code Discussion for August 2009

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2003 Acura RSX 2.0L Hesitation, Misfire VIN: JH4DC54803
P0304: Cylinder 4 Misfire Detected. having a hard time with this one,car hesitates bad just off idle on hard accel but once it does accel it will pop back through intake a couple of time then be fine.car will pop back any time on hard accel no matter if at idle or not.have checked cam timming,va...
August 07, 2009
2005 Kia Sedona EX 3.5L Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: KNDUP13215
P0304: Cylinder 4 Misfire Detected. van came in for a tune-up changed plugs and wires customer complained afterward of vehicle hesitation mil lamp was on checked codes came up random misfire cleaned maf and throddle seem to run fine next day customer said vehicle doing it again noticed rpm gage ...
August 07, 2009
2004 Hyundai Elantra GT 2.0L Misfire VIN: KMHDN56D54
P0304: Cylinder 4 Misfire Detected. vehicle has consistant cyl 4 misfire.replaced plugs and wires to no avail(twice), swaped #4 injector to #2 and misfire stayed on 4. replaced ignition coil. scoped coil and injector signals, all are okay. did a block test to check for exhaust gases in cooling s...
August 08, 2009
2004 Land Rover Range Rover HSE 4.4L Misfire, Poor Fuel Economy, MIL Lamp on VIN: SALME11414
P0304: misfire 4. Hi, Thank you to all the wonderful techs willing to help a faithful customer of mine. Here goes, we have a 2004 Range Rover HSE with the 4.4 liter. Came in with codes po1300 po308 po307 po304, vehicle always misfires, service engine lite on and blinks when acc...
August 08, 2009
1997 Ford Taurus SHO 3.4L Misfire
P0304: Cylinder 4 misfire. After the previous repairs we went after the misfires. We had misfires on #8 and #4. #8 was fixed by repairing a bad connector at the coil. #4 is where our problem lies. The problem is in the injector. There is a good power supply at all times and the computer...
August 10, 2009
2001 Honda Accord EX 3.0L Misfire VIN: 1HGCG16521
P0304: Cylinder 4 Misfire Detected. ... system showed codes: P0302, P0304, P0305, P0300, P1399. Swapped coil packs around and to my surprise the following codes are now shown: P0301, P0302, P0304, P0305, P0300, P1399. Same as first...
August 10, 2009
2001 Dodge Stratus ES 2.4L Misfire, MIL Lamp on VIN: 1B3EJ46X21
P0304: Cylinder 4 Misfire Detected. hello there fellow techs i have a 2001 dodge stratus that came in as a no start .when testing vehicle it started up and has ran since.the vehicle now has intermittent misfires on cylinder # 1 and 4.vehicle has new spark plugs and wires,ignition coil,cam and cr...
August 13, 2009
1997 Audi A4 Quattro 2.8L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: WAUEA88D3V
P0304: cyl 4 misfire. I have a 97 Audi A4 Quattro that came in with MIL light on and misfire codes for cyl's 4,5 & 6. Pulled plugs to inspect, look pretty new. Wires look good. Checked for spark at affected cylinders, have good spark. Checked injector pulse on affected cylinder...
August 17, 2009
2001 Dodge Stratus ES 2.4L Misfire, MIL Lamp on VIN: 1B3EJ46X21
P0304: Cylinder 4 Misfire Detected. hello there fellow techs i have a 2001 dodge stratus that came in as a no start .when testing vehicle it started up and has ran since.the vehicle now has intermittent misfires on cylinder # 1 and 4.vehicle has new spark plugs and wires,ignition coil,cam and cr...
August 17, 2009
2004 BMW X3 3.0i 3.0L Poor Idle Quality, MIL Lamp on VIN: WBXPA934X4
This car has been back 3 times while we try and sort this mess out. The first two times it only had the O2 sensor codes. We replaced the sensors and recommended going to BMW for the software update. For some readson the changed the VTG oil and didnt do an upda...
August 18, 2009
1998 Chrysler Cirrus LXi 2.5L Misfire, MIL Lamp on VIN: 1C3EJ56H2X
P0304: Cylinder 4 Misfire Detected. Gentlemen, Intermittently vehicle sets misfire faults, engine is not misfiring at all. Replaced all ignition parts in the course of a tune-up, CKP sensor, new distributor. Fuel quality is good, pressure and volume is good. Has been at other shop for same conce...
August 24, 2009
2001 Jeep Grand Cherokee Laredo 4.7L Misfire VIN: 1J4GW58ND1
P0304: Cylinder 4 Misfire Detected. Hello and thanks for taking the time to read this. I have a perfect example of a bad coil on cylinder number 4. it misses under load on command but also misses sometimes at an idle.i didnt even hesitate to replace the coil on that cylinder but it didnt make a ...
August 25, 2009
1998 Toyota 4Runner Limited 3.4L Misfire VIN: JT3HN87R4W
P0304: Cylinder 4 Misfire Detected. ... customer. the vehicle came in with a complaint of misfiring. i swapped the spark plug with another cylinder to see if the problem followed, and the misfire went away. i kept the truck for 2 days and it ran great! i gave it back to my buddy and told him to ...
August 25, 2009
2001 Dodge Grand Caravan Sport 3.3L Misfire, MIL Lamp on VIN: 2B4GP44371
P0304: Cylinder 4 Misfire Detected. van will intermittently show mifires on #1,2,4,5 cylinders but you don't feel any miss. we have checked compression and it is ok,valvesprings are not broken, connection at the coil is good, any suggetions ? thanks in advance.
August 26, 2009
1997 Subaru Legacy L 2.2L Misfire, MIL Lamp on VIN: 4S3BD4351V
P0304: Cylinder 4 Misfire Detected. Misfire On #4. Inline Spark Tester Always Firing. Check At Injector With Noid Light, Always Flashing. Swapped Injectors & Wires, New Plugs, Different Coil, No Change. Dropped Exhaust & All The Guides Look The Same And Can See Only Alittle Of The Guide ...
August 31, 2009
2003 Acura RSX 2.0L Hesitation, Misfire VIN: JH4DC54803
P0304: Cylinder 4 Misfire Detected. having a hard time with this one,car hesitates bad just off idle on hard accel but once it does accel it will pop back through intake a couple of time then be fine.car will pop back any time on hard accel no matter if at idle or not.have checked cam timming,va...
August 07, 2009
2005 Kia Sedona EX 3.5L Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: KNDUP13215
P0304: Cylinder 4 Misfire Detected. van came in for a tune-up changed plugs and wires customer complained afterward of vehicle hesitation mil lamp was on checked codes came up random misfire cleaned maf and throddle seem to run fine next day customer said vehicle doing it again noticed rpm gage ...
August 07, 2009
2004 Hyundai Elantra GT 2.0L Misfire VIN: KMHDN56D54
P0304: Cylinder 4 Misfire Detected. vehicle has consistant cyl 4 misfire.replaced plugs and wires to no avail(twice), swaped #4 injector to #2 and misfire stayed on 4. replaced ignition coil. scoped coil and injector signals, all are okay. did a block test to check for exhaust gases in cooling s...
August 08, 2009
2004 Land Rover Range Rover HSE 4.4L Misfire, Poor Fuel Economy, MIL Lamp on VIN: SALME11414
P0304: misfire 4. Hi, Thank you to all the wonderful techs willing to help a faithful customer of mine. Here goes, we have a 2004 Range Rover HSE with the 4.4 liter. Came in with codes po1300 po308 po307 po304, vehicle always misfires, service engine lite on and blinks when acc...
August 08, 2009
1997 Ford Taurus SHO 3.4L Misfire
P0304: Cylinder 4 misfire. After the previous repairs we went after the misfires. We had misfires on #8 and #4. #8 was fixed by repairing a bad connector at the coil. #4 is where our problem lies. The problem is in the injector. There is a good power supply at all times and the computer...
August 10, 2009
2001 Honda Accord EX 3.0L Misfire VIN: 1HGCG16521
P0304: Cylinder 4 Misfire Detected. ... system showed codes: P0302, P0304, P0305, P0300, P1399. Swapped coil packs around and to my surprise the following codes are now shown: P0301, P0302, P0304, P0305, P0300, P1399. Same as first...
August 10, 2009
2001 Dodge Stratus ES 2.4L Misfire, MIL Lamp on VIN: 1B3EJ46X21
P0304: Cylinder 4 Misfire Detected. hello there fellow techs i have a 2001 dodge stratus that came in as a no start .when testing vehicle it started up and has ran since.the vehicle now has intermittent misfires on cylinder # 1 and 4.vehicle has new spark plugs and wires,ignition coil,cam and cr...
August 13, 2009
1997 Audi A4 Quattro 2.8L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: WAUEA88D3V
P0304: cyl 4 misfire. I have a 97 Audi A4 Quattro that came in with MIL light on and misfire codes for cyl's 4,5 & 6. Pulled plugs to inspect, look pretty new. Wires look good. Checked for spark at affected cylinders, have good spark. Checked injector pulse on affected cylinder...
August 17, 2009
2001 Dodge Stratus ES 2.4L Misfire, MIL Lamp on VIN: 1B3EJ46X21
P0304: Cylinder 4 Misfire Detected. hello there fellow techs i have a 2001 dodge stratus that came in as a no start .when testing vehicle it started up and has ran since.the vehicle now has intermittent misfires on cylinder # 1 and 4.vehicle has new spark plugs and wires,ignition coil,cam and cr...
August 17, 2009
2004 BMW X3 3.0i 3.0L Poor Idle Quality, MIL Lamp on VIN: WBXPA934X4
This car has been back 3 times while we try and sort this mess out. The first two times it only had the O2 sensor codes. We replaced the sensors and recommended going to BMW for the software update. For some readson the changed the VTG oil and didnt do an upda...
August 18, 2009
1998 Chrysler Cirrus LXi 2.5L Misfire, MIL Lamp on VIN: 1C3EJ56H2X
P0304: Cylinder 4 Misfire Detected. Gentlemen, Intermittently vehicle sets misfire faults, engine is not misfiring at all. Replaced all ignition parts in the course of a tune-up, CKP sensor, new distributor. Fuel quality is good, pressure and volume is good. Has been at other shop for same conce...
August 24, 2009
2001 Jeep Grand Cherokee Laredo 4.7L Misfire VIN: 1J4GW58ND1
P0304: Cylinder 4 Misfire Detected. Hello and thanks for taking the time to read this. I have a perfect example of a bad coil on cylinder number 4. it misses under load on command but also misses sometimes at an idle.i didnt even hesitate to replace the coil on that cylinder but it didnt make a ...
August 25, 2009
1998 Toyota 4Runner Limited 3.4L Misfire VIN: JT3HN87R4W
P0304: Cylinder 4 Misfire Detected. ... customer. the vehicle came in with a complaint of misfiring. i swapped the spark plug with another cylinder to see if the problem followed, and the misfire went away. i kept the truck for 2 days and it ran great! i gave it back to my buddy and told him to ...
August 25, 2009
2001 Dodge Grand Caravan Sport 3.3L Misfire, MIL Lamp on VIN: 2B4GP44371
P0304: Cylinder 4 Misfire Detected. van will intermittently show mifires on #1,2,4,5 cylinders but you don't feel any miss. we have checked compression and it is ok,valvesprings are not broken, connection at the coil is good, any suggetions ? thanks in advance.
August 26, 2009
1997 Subaru Legacy L 2.2L Misfire, MIL Lamp on VIN: 4S3BD4351V
P0304: Cylinder 4 Misfire Detected. Misfire On #4. Inline Spark Tester Always Firing. Check At Injector With Noid Light, Always Flashing. Swapped Injectors & Wires, New Plugs, Different Coil, No Change. Dropped Exhaust & All The Guides Look The Same And Can See Only Alittle Of The Guide ...
August 31, 2009