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P0304 Diagnostic Trouble Code Discussion for August 2005

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
1999 Toyota 4Runner Limited 3.4L Misfire, MIL Lamp on VIN: JT3HN87R2X
P0304: Cylinder 4 Misfire Detected. Hello: This 4 runner will run fine with under 10 g/s mass air flow but as soon as the air flow goes above the magic ten mark it will misfire on #4, now and then on #5 and #3. Mostly on #4. I replaced the coil and plug on #4 and added some JB fuel injector cl...
August 01, 2005
2002 Subaru Impreza WRX 2.0L Misfire, MIL Lamp on VIN: JF1GD29622
P0304: Cylinder 4 Misfire Detected. greetings. this one came in for check engine light. scanned, retrieved listed codes. checked data stream - front O2 sensor reading 3.67 to 3.89 volts. this reading does not change when sensor is unplugged from vehicle harness. very occassionaly, scanner will r...
August 03, 2005
2000 Audi A4 Quattro 1.8L Hesitation, Misfire, MIL Lamp on VIN: WAUDC28D9Y
P0304: Cylinder 4 Misfire. Dear Fellow Tech, This vehicle is a stumper. Idle is smooth, all cylinders fire good, it runs fine at times but when it acts up it does not have any power, backfires, sets MIL light and when held at 2000 rpm's, the rpm's drop no matter how much gas you give it...
August 05, 2005
2002 Subaru Impreza WRX 2.0L Misfire, MIL Lamp on VIN: JF1GD29622
P0304: Cylinder 4 Misfire Detected. greetings. this one came in for check engine light. scanned, retrieved listed codes. checked data stream - front O2 sensor reading 3.67 to 3.89 volts. this reading does not change when sensor is unplugged from vehicle harness. very occassionaly, scanner will r...
August 05, 2005
2000 Saturn LS2 3.0L Misfire, MIL Lamp on VIN: 1G8JW52RXY
P0304: Cylinder 4 Misfire Detected. car runs fine and at once it will start missing. can see the mis on modus. cleared these codes and did come back. ses light will flash.
August 13, 2005
1999 Toyota 4Runner Limited 3.4L Misfire, MIL Lamp on VIN: JT3HN87R2X
P0304: Cylinder 4 Misfire Detected. Hello: This 4 runner will run fine with under 10 g/s mass air flow but as soon as the air flow goes above the magic ten mark it will misfire on #4, now and then on #5 and #3. Mostly on #4. I replaced the coil and plug on #4 and added some JB fuel injector cl...
August 18, 2005
2000 Volkswagen Passat GLS 2.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WVWTH23BOY
P0304: Cylinder 4 misfire detected. Vehicle has misfire codes for cylinder 1, 4 and random. The misfire is intermittent. When under a load, either accelerating quickly or going up a hill, is when you notice a dead misfire. Having the AC on makes this problem much worse. Current ramped and it see...
August 23, 2005
2000 Dodge Dakota 3.9L Misfire, MIL Lamp on VIN: 1B7GL22XXY
P0304: Cylinder 4 Misfire Detected. Hey techs. This dodge is giving us some problems. we have a steady misfire on #4 at idle to light cruise. we have scope checked ign. scope checked injector, performed motor vac (twice) compression is within 10-lbs/2 on this cyl. we have moved spark plugs and i...
August 24, 2005
2000 Chevrolet S10 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCC51445Y
P0304: Cylinder 4 Misfire Detected. hello. Ive got one here that makes one consider a careir change. This truck came in blowing white smoke and missfiring on cyl num 4 . found a blown head gasket and degraded plug wires. repaired head gasket including milling it 5k. replaced plugs and wires as w...
August 25, 2005