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P0304 Diagnostic Trouble Code Discussion for February 2004

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2001 Dodge Ram 1500 Van 3.9L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2B7HB11X61
P0304: Cylinder 4 Misfire Detected. Hi guys I have missfires on cyl #3&#4 about twice as many misses on cyl 4 performed a complete tune up with new wires no changein missfires engine only seem to miss at an idle or at least it is A lot worse at idle. remove intake to check for vacumn leak no...
February 02, 2004
1998 Ford Explorer XL 4.0L Misfire VIN: 1FMY422X9W
P0304: misfire 4 cylinder. ... be an ignition miss. ran comp. scan, and found code p0304. cleared codes and checked ignition sys. replaced weak plug wires. ignition coil checks ok. ran fuel pressure check, ok. check injectors. did ohm check only, all check ok. re-started vehicle and tes...
February 03, 2004
1996 Ford Windstar GL 3.8L Misfire VIN: 2FMDA5145T
P0304: cylinder 4 misfire. here's a good one for our ford fans...this vehicle had a code for cylinder #4 misfire and someone put all the secondary ignition on the engine. the car is now in my hands. there is still a misfire, but in cylinder #1 now. and only slight load (10%)AND GOES AWA...
February 10, 2004
2000 Acura Integra LS 1.8L MIL Lamp on VIN: JH4DC4350Y
P0304: Cylinder 4 Misfire Detected. hello- this car came in with the cel on and a complaint of poor fuel milage. we pulled codes po 132 and po1457. then we also changed oil and a very plugged air filter. we then cleared the codes and went to test drive. then the cel started to flash and set the ...
February 12, 2004
1995 BMW 750iL 5.4L Poor Idle Quality, MIL Lamp on VIN: WBAGK2321S
P0304: Misfire Cyl 4. Why would the DME think every cyl on this bank is misfiring? It does intermittently seem to drop rpm, but it does not idle rough or misfire at any point. DME1 and 2 both report these codes. Clearing codes and restarting brings them back after about 3-4 seconds...
February 18, 2004
1999 Subaru Forester L 2.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: JF1SF6358X
P0304: Cylinder 4 Misfire Detected. Hello to all you experienced techs out there! We've got a Subaru here that is really making my head more bald than before. This high mileage car has been in a few times with the current code for cylinder #4 misfire. It all started with #1 heavily corroded at t...
February 18, 2004
1998 Plymouth Neon Style 2.0L Misfire, MIL Lamp on VIN: 1P3ES47C2W
P0304: Cylinder 4 Misfire Detected. Really could use some help here. This car came in about a week ago with check engine light on & running bad. Egr control solenoid was corroded. replaced valve & transducer assembly. Cylinder 4 plug was fouled out. Replaced all plugs & cleared codes...
February 26, 2004