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P0304 Diagnostic Trouble Code Discussion for September 2007

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2001 Ford Escape XLT 3.0L MIL Lamp on VIN: 1FMYU04151
P0304: misfire detected cyl. 4. The check eng light comes on about every 2000 miles. The customer nor myself have not felt the vehicle miss at any time. They say it runs great the light just comes on.
September 05, 2007
2002 Mercedes-Benz ML320 3.2L MIL Lamp on VIN: 4JGAB54E52
P0304: Cyl 4 Misfire. ... have seen this before, cause bad wires and plugs. Replaced and vehicle runs great, but every now and the it will stumble and give the P0300, P0304, P0306 codes. I have check connections,...
September 05, 2007
2004 Honda Accord EX 2.4L Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1HGCM72654
P0304: Cylinder 4 Misfire Detected. ... battery and no fuel. Misfires were rampant until battery was changed and fuel added. The only codes that were held in memory were the P0300,301,302,303,and 304. This vehicle was being driven by a step child that basically ha...
September 11, 2007
2002 Saturn Vue 3.0L Hesitation, Misfire, MIL Lamp on VIN: 5GZCZ63B92
P0304: Cylinder 4 Misfire Detected. I am losing the battle so far with this Saturn Vue! First time in it had misfires on many cylinders, both banks, ran o.k., but I could feel a miss at idle occasionally. With all the miles I opted to replace plugs and do a compression check. While the plugs wer...
September 11, 2007
2003 Chevrolet S10 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCCS14H23
P0304: Cylinder 4 Misfire Detected. vehicle came in with intermittent rough idle, lose of power,mil light on . customer though he had gotten bad gas,(water). we ran alchol; through system and some 44k. slight help , it had original wires,cap,etc, so we did a major tuneup, more help. we performed...
September 12, 2007
2006 Honda Civic EX 1.8L Misfire VIN: 2HGEFG1133
P0304: Cylinder 4 Misfire Detected. i just did a short block, clutch and flywheel on this car and now i have a misfire in #1 & #4 cylinder. all the sensors are hooked up. i swapped the outside coils with the inside one's to see if the misfire would change cylinders but it didn't, i changed t...
September 18, 2007
1995 Mercury Grand Marquis LS 4.6L Misfire VIN: 2MELM75WXS
P0304: Misfire 4. Greetings! Could use some direction on this one. Swapped coils, plugs, ignition wires, fuel injectors - no change. Unlike most ignition misfires, it seems worst under light throttle. No matter what I change, still cylinders 4 and 7. Have not pulled cam covers ...
September 18, 2007
1997 Buick LeSabre Custom 3.8L Misfire, MIL Lamp on VIN: 1G4HP52K9V
P0304: 4 cyl. This car has the light on and the misfire counter shows #4 misfiring. i can barely feel a miss in engine. when it is of of idle, the counter does not show miss at all.noid flashes on #4 I suspect the injector driver because of the code but cannot pinpoint the ...
September 19, 2007
2002 Chrysler PT Cruiser Dream 2.4L Poor Idle Quality, Misfire VIN: 3C8FY68B72
P0304: Cylinder 4 Misfire Detected. misfire /stumble at idle smoked seems ok but smoke comes out of egr valve runs fine when driven or power brake. clogged inj? or vaccume leak?
September 20, 2007
2003 Land Rover Freelander SE 2.5L Misfire, MIL Lamp on VIN: SALNY22263
P0304: misfire cyl4. This vehicle towed in with the fault codes below.Engine idles fine on all 6 but the above 4 cylinders cut out upon acceleration.The injectors for 1,2,4 and 6 lose their pulse.I suspected that it was going into limp home but there are no other codes. Your help...
September 20, 2007
2002 Subaru Outback 2.5L Misfire, MIL Lamp on VIN: 4S3BH66582
P0304: Cylinder 4 Misfire Detected. Overnight, the #4 spark plug becomes soaked enough to create a complete misfire that will take up to 1 minute to completely vanish. Battery voltage is present on the injector circuit (through the main relay) for 5 minutes after shutdown, however labscope test...
September 20, 2007
2002 Chrysler PT Cruiser Dream 2.4L Poor Idle Quality, Misfire VIN: 3C8FY68B72
P0304: Cylinder 4 Misfire Detected. misfire /stumble at idle smoked seems ok but smoke comes out of egr valve runs fine when driven or power brake. clogged inj? or vaccume leak?
September 21, 2007
2003 Volkswagen Passat GLS 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WVWPD63B93
P0304: Misfire cyl 4. Hello eveyone; I got a head scratcher for me. I am getting multiple misfire codes on all cylinders. The Idle is bad and gets worse as the car warms up. The MIL flashes on idle. Once you start driving it will stumble a little but straighten out and drive fine u...
September 21, 2007
2004 Ford F-150 Lariat 5.4L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1FTPX12514
P0304: cyl 4 misfire. ... the new 5.4 3 valve eng.did not know about plug problem until after purchase. did not miss or ses on test drive. on the way home (60 miles)when i came to steep grade began missing bad as long as in overdrive. it would shift back to 3rd no miss. i could mak...
September 22, 2007
2002 Acura MDX 3.5L MIL Lamp on VIN: 2HNYD18282
P0304: Cylinder 4 Misfire Detected. ... see if anyone has any information on a p1399 for this vehicle. Any of my sources (snap on, alldata, etc) tells me nothing for this vehicle. I get misfire codes turning on the check engine light, always accompanied with a p1399 pending. The miss codes alway...
September 26, 2007
2004 Ford F-150 Lariat 5.4L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1FTPX12514
P0304: cyl 4 misfire. ... the new 5.4 3 valve eng.did not know about plug problem until after purchase. did not miss or ses on test drive. on the way home (60 miles)when i came to steep grade began missing bad as long as in overdrive. it would shift back to 3rd no miss. i could mak...
September 27, 2007
2003 Volkswagen Passat GLS 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WVWPD63B93
P0304: Misfire cyl 4. Hello eveyone; I got a head scratcher for me. I am getting multiple misfire codes on all cylinders. The Idle is bad and gets worse as the car warms up. The MIL flashes on idle. Once you start driving it will stumble a little but straighten out and drive fine u...
September 27, 2007
2001 Ford Escape XLT 3.0L MIL Lamp on VIN: 1FMYU04151
P0304: misfire detected cyl. 4. The check eng light comes on about every 2000 miles. The customer nor myself have not felt the vehicle miss at any time. They say it runs great the light just comes on.
September 05, 2007
2002 Mercedes-Benz ML320 3.2L MIL Lamp on VIN: 4JGAB54E52
P0304: Cyl 4 Misfire. ... have seen this before, cause bad wires and plugs. Replaced and vehicle runs great, but every now and the it will stumble and give the P0300, P0304, P0306 codes. I have check connections,...
September 05, 2007
2004 Honda Accord EX 2.4L Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1HGCM72654
P0304: Cylinder 4 Misfire Detected. ... battery and no fuel. Misfires were rampant until battery was changed and fuel added. The only codes that were held in memory were the P0300,301,302,303,and 304. This vehicle was being driven by a step child that basically ha...
September 11, 2007
2002 Saturn Vue 3.0L Hesitation, Misfire, MIL Lamp on VIN: 5GZCZ63B92
P0304: Cylinder 4 Misfire Detected. I am losing the battle so far with this Saturn Vue! First time in it had misfires on many cylinders, both banks, ran o.k., but I could feel a miss at idle occasionally. With all the miles I opted to replace plugs and do a compression check. While the plugs wer...
September 11, 2007
2003 Chevrolet S10 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCCS14H23
P0304: Cylinder 4 Misfire Detected. vehicle came in with intermittent rough idle, lose of power,mil light on . customer though he had gotten bad gas,(water). we ran alchol; through system and some 44k. slight help , it had original wires,cap,etc, so we did a major tuneup, more help. we performed...
September 12, 2007
2006 Honda Civic EX 1.8L Misfire VIN: 2HGEFG1133
P0304: Cylinder 4 Misfire Detected. i just did a short block, clutch and flywheel on this car and now i have a misfire in #1 & #4 cylinder. all the sensors are hooked up. i swapped the outside coils with the inside one's to see if the misfire would change cylinders but it didn't, i changed t...
September 18, 2007
1995 Mercury Grand Marquis LS 4.6L Misfire VIN: 2MELM75WXS
P0304: Misfire 4. Greetings! Could use some direction on this one. Swapped coils, plugs, ignition wires, fuel injectors - no change. Unlike most ignition misfires, it seems worst under light throttle. No matter what I change, still cylinders 4 and 7. Have not pulled cam covers ...
September 18, 2007
1997 Buick LeSabre Custom 3.8L Misfire, MIL Lamp on VIN: 1G4HP52K9V
P0304: 4 cyl. This car has the light on and the misfire counter shows #4 misfiring. i can barely feel a miss in engine. when it is of of idle, the counter does not show miss at all.noid flashes on #4 I suspect the injector driver because of the code but cannot pinpoint the ...
September 19, 2007
2002 Chrysler PT Cruiser Dream 2.4L Poor Idle Quality, Misfire VIN: 3C8FY68B72
P0304: Cylinder 4 Misfire Detected. misfire /stumble at idle smoked seems ok but smoke comes out of egr valve runs fine when driven or power brake. clogged inj? or vaccume leak?
September 20, 2007
2003 Land Rover Freelander SE 2.5L Misfire, MIL Lamp on VIN: SALNY22263
P0304: misfire cyl4. This vehicle towed in with the fault codes below.Engine idles fine on all 6 but the above 4 cylinders cut out upon acceleration.The injectors for 1,2,4 and 6 lose their pulse.I suspected that it was going into limp home but there are no other codes. Your help...
September 20, 2007
2002 Subaru Outback 2.5L Misfire, MIL Lamp on VIN: 4S3BH66582
P0304: Cylinder 4 Misfire Detected. Overnight, the #4 spark plug becomes soaked enough to create a complete misfire that will take up to 1 minute to completely vanish. Battery voltage is present on the injector circuit (through the main relay) for 5 minutes after shutdown, however labscope test...
September 20, 2007
2002 Chrysler PT Cruiser Dream 2.4L Poor Idle Quality, Misfire VIN: 3C8FY68B72
P0304: Cylinder 4 Misfire Detected. misfire /stumble at idle smoked seems ok but smoke comes out of egr valve runs fine when driven or power brake. clogged inj? or vaccume leak?
September 21, 2007
2003 Volkswagen Passat GLS 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WVWPD63B93
P0304: Misfire cyl 4. Hello eveyone; I got a head scratcher for me. I am getting multiple misfire codes on all cylinders. The Idle is bad and gets worse as the car warms up. The MIL flashes on idle. Once you start driving it will stumble a little but straighten out and drive fine u...
September 21, 2007
2004 Ford F-150 Lariat 5.4L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1FTPX12514
P0304: cyl 4 misfire. ... the new 5.4 3 valve eng.did not know about plug problem until after purchase. did not miss or ses on test drive. on the way home (60 miles)when i came to steep grade began missing bad as long as in overdrive. it would shift back to 3rd no miss. i could mak...
September 22, 2007
2002 Acura MDX 3.5L MIL Lamp on VIN: 2HNYD18282
P0304: Cylinder 4 Misfire Detected. ... see if anyone has any information on a p1399 for this vehicle. Any of my sources (snap on, alldata, etc) tells me nothing for this vehicle. I get misfire codes turning on the check engine light, always accompanied with a p1399 pending. The miss codes alway...
September 26, 2007
2004 Ford F-150 Lariat 5.4L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1FTPX12514
P0304: cyl 4 misfire. ... the new 5.4 3 valve eng.did not know about plug problem until after purchase. did not miss or ses on test drive. on the way home (60 miles)when i came to steep grade began missing bad as long as in overdrive. it would shift back to 3rd no miss. i could mak...
September 27, 2007
2003 Volkswagen Passat GLS 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WVWPD63B93
P0304: Misfire cyl 4. Hello eveyone; I got a head scratcher for me. I am getting multiple misfire codes on all cylinders. The Idle is bad and gets worse as the car warms up. The MIL flashes on idle. Once you start driving it will stumble a little but straighten out and drive fine u...
September 27, 2007