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P0304 Diagnostic Trouble Code Discussion for March 2004

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
1996 Ford Windstar GL 3.8L Misfire, MIL Lamp on VIN: 2FMDA5141T
P0304: Misfire detected on 4 cylinder. This Vehicle is loosing injector pulse at # 4 injector during misrire. The mis occurs under load & will idle just fine.I have tested with lab scope to verify that the PCM is not pulsing the ground side. During the mis, The inj. wave form disappears and sho...
March 03, 2004
1999 Subaru Forester L 2.5L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: JF1SF6355X
P0304: Cylinder 4 Misfire Detected. After replacing all ignition components thinking the burned coil pac was a no brainer, the engine still misses very bad at idle,CO and HC are out the roof.I still can't get a good ignition secondary waveform on #1 and #2 but I can on #3 and #4 checked both coi...
March 03, 2004
1999 Buick Century Custom 3.1L Misfire, MIL Lamp on VIN: 2G4WS52M6X
P0304: Cylinder 4 misfire. This car came in with the MIL on with cylinder misfire on cylinder #4. Plugs looked good but were original so we changed them along with the wires and swapped an ignition coil. No improvement. Took a static and running compression reading with cylinder #4 slig...
March 07, 2004
1999 Mazda Miata 10th Anniversary 1.8L Misfire, MIL Lamp on VIN: JM1NB3536X
P0304: Cylinder 4 Misfire Detected. Hello! While driving this car above about 2500 rpm it boggs down and acts like a dead cylinder. I can rev it in my stall above 3500 rpm and make it do the same thing. I have tried anouther coil pack, crank sensor, and cam sensor with no luck. I have monitored...
March 11, 2004
1997 Ford Windstar GL 3.8L Misfire VIN: 2FMDA5146V
P0304: cyl 4 misfire. van came in needing head gaskets. made repair and put on the new wires,new plugs, and new coil at that time. Van seemed to run fine when first started after repair. After running van for awhile, noticed "booming" sound while sitting in van. Ran van on ...
March 13, 2004
1998 Land Rover Range Rover SE 4.0L Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: SALPV1240W
P0304: misfire - cylinder 4. customer states "engine power loss while driving at highway speeds. vehicle will not go over 30 m.p.h. and oil pressure light comes on." however i cannot duplicate this problem. after driving for about thirty miles, the oil pressure light comes on inte...
March 16, 2004
1997 Ford Taurus GL 3.0L MIL Lamp on VIN: 1FALP57U4V
P0304: Camshaft sensor. Car was driven in and runs well however Mil lamp on checked codes P304 and checked camshaft sensor sensor is demolished and vanes on dist shaft are destroyed. ordered new and will be in Monday my question is how do you time the new distributor not really a dis...
March 19, 2004
1996 Toyota 4Runner SR5 3.4L Misfire, MIL Lamp on VIN: JT3HN86R2T
P0304: Cylinder 4 Misfire Detected. This vehicle was brought in for check engine light with a misfire. Upon inspection. I found the it had four codes. random misfire, misfire cylinders 2,4,&6. Vehicle only has misfire after it had warmed up and at idle. misfire goes away at above 1500 rpm's....
March 19, 2004
1999 Chrysler 300M 3.5L Misfire, MIL Lamp on VIN: 2C3HE66G5X
P0304: Cylinder 4 Misfire Detected. Hello fello Techs. This '99 300m is forcing me to question my diagnostic ability. It came in with an intermittant misfire on cylinder #4.This misfire happens more at an idle,but I have experienced it while accelerating and cruising. I can really get it to sho...
March 23, 2004
1999 Toyota Avalon XL 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 4T1BF18B7X
P0304: Cylinder 4 Misfire Detected. This car belongs to a family member in Chewelah, Wa. We are hoping to help them with some input from the group. They first started to get a random miss when warm only. The missfire has become more prevelant over time. When the car is cold and in open loop the ...
March 29, 2004
2000 Hyundai Sonata GLS 2.5L Cuts out, MIL Lamp on VIN: KMHWF35V8Y
P0304: Cylinder 4 Misfire Detected. hello to all,this thing has been everywhere, and has everything shy of the ole' kitchen sink thrown at it. here's may problem, scanned codes all codes po301 through po306 are stored in memory, if i clear the codes and drive the car it takes aprox 18-20 miles t...
March 30, 2004
1999 Lexus RX300 3.0L Misfire, MIL Lamp on VIN: JT6HF10UXX
P0304: Missfire cyl4. As you have read in the info #2 coil was replaced. Problem resolved. Car back with another coil bad,#4. When previous coil ordered it was back ordered and had to come across country from NY, 5 days. I belive this is too be a common problem. Customer and I ne...
March 30, 2004
1999 Subaru Legacy Limited 30th Anniversary 2.5L MIL Lamp on VIN: 4S3BG6853X
P0304: Cylinder 4 Misfire Detected. this car came in back in sept 03 with both of these codes in it. Customer never complained about a misfire and we never found a misfire. We put in plugs, wires and coil pack all after market. It came back in 10 days later with same code in it and was misfiring...
March 31, 2004