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P0304 Diagnostic Trouble Code Discussion for June 2010

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2006 Dodge Grand Caravan SXT 3.8L Misfire VIN: 2D4GP44L66
P0304: Cylinder 4 Misfire Detected. hello everyone, this is killing me, vehicle came in with cyl 4 misfire has new champion plugs, fuel pressure good swapped ign wire no change, swapped plug & injector still no change. compression 175 and running compression shows same as another cyl.wiring ...
June 01, 2010
2003 Land Rover Discovery SE 4.6L Misfire VIN: SALTW16483
P0304: Missfire cylinder 4. Customer overheated engine and we found the top of the block warped. Had a local machine shop do a total rebuild on the engine and they decked the block. I now have miss-fires on cyl#3&4 at all times. All ignition components are new and I have since change...
June 01, 2010
2001 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: 1J4GX48S51
P0304: Cylinder 4 Misfire Detected. Thank you in advance for your help. This car has a mil with multiple misfire codes. Car runs OK, but over 3500 rpm mil will start flashing. In addition to the multiple misfire codes, when we view the freeze frame, it shows rpm at 0 and map at 0, and we don't ...
June 02, 2010
1999 Audi A6 Quattro Avant 2.8L Misfire VIN: WAUDA24B4X
this vehicle runs good most of the time bu intermittently it will misfire very severly. I have duplicated problem after driving and coasting for a bit the it will misfire but as soon as rpm go up misfire cleares up and engine will run fine this does not happen...
June 04, 2010
2002 Dodge Dakota 4.7L hard start VIN: 1B7HG38NX2
P0304: Cylinder 4 Misfire Detected. This Dakota has an intermittent extended crank time. This seems to happen when the truck sits for an hour after driving. It also occurs sometimes after setting overnight. It has no real pattern of happening. So far the truck has always started.
June 04, 2010
1999 Audi A6 Quattro Avant 2.8L Misfire VIN: WAUDA24B4X
this vehicle runs good most of the time bu intermittently it will misfire very severly. I have duplicated problem after driving and coasting for a bit the it will misfire but as soon as rpm go up misfire cleares up and engine will run fine this does not happen...
June 05, 2010
2004 Jeep Liberty Sport 3.7L Misfire VIN: 1J4GL48K74
P0304: Cylinder 4 Misfire Detected. hello ladyes And gentelmen i have a jeep with multiple codes for misfire and coil drivers on 3 cylinders swaped out coils with known good ones and still have concern compression test all cylinders average 150 psi all also have 130 running compression installed...
June 06, 2010
2003 Land Rover Discovery SE 4.6L Misfire VIN: SALTW16483
P0304: Missfire cylinder 4. Customer overheated engine and we found the top of the block warped. Had a local machine shop do a total rebuild on the engine and they decked the block. I now have miss-fires on cyl#3&4 at all times. All ignition components are new and I have since change...
June 10, 2010
2000 Hyundai Tiburon 2.0L Hesitation, Misfire, MIL Lamp on VIN: KMHJG25F37
P0304: Cylinder 4 Misfire Detected. ... with P0300, P0301, P0303, P0304 codes set in memory. On a test drive we noticed a slight missfire under 3000rpm right at part to wide open throttle at take off under a load, such as taking off from a stop light. Brought the...
June 17, 2010
2001 Pontiac Grand Am SE 2.4L Misfire VIN: 1G2NE52T51
P0304: Cylinder 4 Misfire Detected. This vehicle has a very intermittent misfire on #4 cylinder only. It has had new OE plugs,coil boots,ignition housing and metal cover.Swapped #1-4 coil to the other cylinders to test. Has had injector #4 replaced and this misfire comes back randomly. The code ...
June 17, 2010
2002 Chrysler Sebring LXi 2.7L Cuts out, Misfire, MIL Lamp on VIN: 1C3EL55R82
P0304: Cylinder 4 Misfire Detected. Hello everyone, This car has been one of the biggest headaches I have run into. The vehicle originally came in for a running hot and coolant leak. We found the water pump leaking from the external weep and the thermostat housing leaking. After a massive amount...
June 22, 2010
2006 Ford Taurus SE 3.0L Misfire VIN: 1FAFP53U96
P0304: . this taurus has an intermittent #3 misfire at cold startup and after a 10 minute hot soak. Misfire will go away after just a few miles. I thought leaky injector. I do not have the hookups to check fuel pressure on this vehicle but fuel pressure pid remained co...
June 22, 2010
2007 Audi A4 Quattro Cabriolet 2.0L MIL Lamp on VIN: WAUDF48H67
P0304: pending. Hey Audi Techs...This car runs very well with good power, but the fuel trims at idle are +25...the max. We smoke tested the induction expecting to find a substantial vacuum leak...no such luck, the system is quite tight! Normal driving allows for normal fuel t...
June 30, 2010