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P0304 Diagnostic Trouble Code Discussion for December 2010

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2008 Mini Cooper S Clubman 1.6L Poor Idle Quality, Misfire VIN: WMWMF73508
P0304: . Hell to all. We need some help with this mini cooper. Customer brought it in for replace spark plugs. Well it needs more than that I believe. It had these codes in it that I listed. We replaced the plugs and it still runs rough and surges at idle. Never worked...
December 01, 2010
2006 Ford F-150 Lariat 5.4L Misfire, Fuel odor VIN: 1FTPX14576
... have a f150 that we had serviced recently(400-500 miles ago) and the customer said that after we did that one time he was going up a hill and the ce light came on and flashed. He said it was missing, but it has not done it again. Well at that point he was ...
December 02, 2010
2005 BMW 545i 4.4L Misfire VIN: WBANB33595
P0304: . Has anyone removed number 4 or 8 ignition coil,they hit the inner fender wall long before being far enough out to remove them.Moved A/C lines to see if it would help, nope.The only way I can see is if I lower the engine a little. Anyone BTDT before?Thank you.T...
December 03, 2010
1999 Ford Ranger XL 2.5L Hesitation, Misfire VIN: 1FTYR14C4X
P0304: misfiree4. hi guys, i am at my witts end on this one. truck came in for no power, hesitation. it was misfiring barely ran. plug wires were worn through and plugs worn out. started with plugs and wires. no change. same cylinders misfire. dug in more did compression test ...
December 07, 2010
2002 Lexus RX300 3.0L Misfire, MIL Lamp on VIN: JTJHF10U80
P0304: Cylinder 4 Misfire Detected. ... on and report misfire to cylinder 2 & 4. I have swaped spark plugs, Injectors and coil packs from cylinder 2 & 4 to cylinders 5 & 6, cleared codes but still reports p0302 and p0304. The car dose not seem to mi...
December 09, 2010
1999 Ford Ranger XLT 4.0L Misfire VIN: 1FTZR15X5X
P0304: Cyl 4 miss. ... around 55mph and 1600rpm had a p0304 code untill i did a lower intake gasket now it wont throw the code but it still shakes and misses at an idle and under load now when i incress speed and rpm the shaking goes away or when i let off the pedal it seams the...
December 20, 2010
2003 Jaguar XK8 4.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: SAJDA42C23
P0304: misfire 4. This vehicle was brought in with the complaint of check engine lamp on, and occasional rough idle for a few seconds after a 15-30 minute hot soak. On initial road test, we did not notice any problems, the engine ran great. During scan testing, we retrieved the...
December 21, 2010
1997 Mercedes-Benz C280 2.8L Poor Idle Quality, Surge, Misfire, MIL Lamp on VIN: WDBHA28E4V
P0304: Missfire 4 cylinder. I took on this vehicle to help a family member out. I replaced the headgasket for oil/coolant intermix. There was a slight idle surge before the the headgasket was replaced. Oil/coolant mix is no longer present. Block test also passes at this time. At idle the...
December 21, 2010
2006 Volkswagen Touareg 3.2L Misfire, MIL Lamp on VIN: WVGZ77L26D
idle is a slight bit shakey, no definitive miss on any specific cylinder. i see alot of posts with similiar problems on the touaregs but havent seen one definate underlying cause. i dont see too many touaregs come through the shop so i am not that familiar wit...
December 21, 2010
2005 Hyundai Tucson GLS 2.7L Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: KM8JM12D25
P0304: Cylinder 4 Misfire Detected. runs fine in park at all rpm. removed front pipe to check for bad converters and they look ok. unplug mass air flow and seems to run ok under load.replaced crank sensor wires where baked from heat off left converter.when driving under hard load cuts out and ge...
December 22, 2010
2003 Jaguar XK8 4.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: SAJDA42C23
P0304: misfire 4. This vehicle was brought in with the complaint of check engine lamp on, and occasional rough idle for a few seconds after a 15-30 minute hot soak. On initial road test, we did not notice any problems, the engine ran great. During scan testing, we retrieved the...
December 23, 2010
2005 Hyundai Tucson GLS 2.7L Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: KM8JM12D25
P0304: Cylinder 4 Misfire Detected. runs fine in park at all rpm. removed front pipe to check for bad converters and they look ok. unplug mass air flow and seems to run ok under load.replaced crank sensor wires where baked from heat off left converter.when driving under hard load cuts out and ge...
December 24, 2010
2001 Volvo V70 2.4L Poor Idle Quality, Misfire VIN: YU1SZ58DX1
P0304: cylinder 4 misfire. this one came in with check engine light on and misfiring on all cylinders. Vehicle is not even drivable, the misfiring is so bad. All the preliminaries, and are coming up with nothing obvious. Compression, vacuum, spark, all good. No vacuum leaks, does not ap...
December 24, 2010
2006 Cadillac SRX 3.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GYEE637X6
P0304: Cylinder 4 Misfire Detected. ... 6 guides but the car was idling rough and check engine light on codes P009, P0018, P0019, P0302, P0304, P0306. We r...
December 27, 2010
2000 Honda Accord LX 3.0L Hesitation, Stall, Misfire, MIL Lamp on VIN: 1HGCG164XY
P0304: Cylinder 4 Misfire Detected. replace fuel pressure regulator & pcm. want to know how to reprogram immobilizer code to new pcm.. try couple attemt got lock out on the HDS. any help on how to tranfer immob code over to new pcm and n unlocking it
December 28, 2010
2000 Honda Accord LX 3.0L Hesitation, Stall, Misfire, MIL Lamp on VIN: 1HGCG164XY
P0304: Cylinder 4 Misfire Detected. replace fuel pressure regulator & pcm. want to know how to reprogram immobilizer code to new pcm.. try couple attemt got lock out on the HDS. any help on how to tranfer immob code over to new pcm and n unlocking it
December 29, 2010
1999 Mazda Protege DX 1.6L Poor Idle Quality, Misfire VIN: JM1BJ2223X
P0304: Cylinder 4 Misfire Detected. ... code p0304 cyl #4 miss fire. I tried Spark Plug, Wire, Coil, Checked Injector Pulse, Checked Compression.. 135lbs, Checked Cyl #3 Compression as well...130lbs. I checked for Vaccum Leaks around intake and such, none found. Checked fuel pressure and volume....
December 29, 2010
2001 Ford Escape XLT 3.0L Misfire VIN: 1FMYU03151
P0304: cly 4 misfire. Check engine lite on. the first cat that was on vehicle when removed you could see the insides a fine metal dust. The compression on cly 4 only 125psi I know is not good, but why would it kill the cat, and make a miss fire on that bank? The other part that I d...
December 31, 2010