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P0304 Diagnostic Trouble Code Discussion for March 2009

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
1997 Ford Ranger Splash 2.3L Misfire, MIL Lamp on VIN: 1FTCR10A4V
P0304: misfire cylinder 4 flashes. Customer was driving down highway one day, and this situation happened while driving. Runs great (even under load) up to around 50 MPH and even higher under no load. At aprox 55 MPH (under load)can hear some spark knock then Cyl 4 cuts out - Always. We have be...
March 03, 2009
2001 Toyota Celica GT 1.8L Poor Idle Quality, Misfire VIN: JTDDR32T91
P0304: Cylinder 4 Misfire Detected. Customer just recently purchased this car via E-bay. The original complaint was no idle when cold. Customer had the car at another shop for one week, A new Maf was installed with very little improvement. They told the customer that the car needed a new t-belt ...
March 04, 2009
2001 Jeep Grand Cherokee Laredo 4.0L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1J4GW48S61
P0304: Cylinder 4 Misfire Detected. Vehicle came in with a no start condition. No fuel pressure and a crank postion code P0320. Replaced the crank sensor and the fuel pump. Vehicle drove good until it go hot (15-20mins). The misfire codes popped up and the vehicle misfired bad. Checked the synce...
March 10, 2009
2000 Chevrolet S10 2.2L Misfire, MIL Lamp on VIN: 1GCCS195XY
P0304: Cylinder 4 Misfire Detected. Hello, I have this little truck here that has been to a couple of different shops locally and now to me, when first started it runs o.k. for a few seconds then starts missing on #4 cylinder. Checked compression, has 125 cranking compression across the board, f...
March 11, 2009
2005 Kia Sorento EX 3.5L Poor Idle Quality, MIL Lamp on VIN: KNDJD73375
P0304: Cylinder 4 Misfire Detected. ... light. Codes P0300, P0302, P0304, & P0306. The enine seems to idle a little rough but goes away immidiattly off of idle. Runs great down the road just idles rough. Did a smoke test and found a vac. hose on the right rear of plenum broken. Repaired and ...
March 12, 2009
2002 Honda Accord Value Package 2.3L Cuts out, Misfire VIN: 1HGCF86652
P0304: Cylinder 4 Misfire Detected. Honda specialists, please help. This car will level out at about 4500 RPM's under full throttle and will not speed up at all or shift to second gear when it reaches this point unless you start to let off of the gas pedal some and then it will go ahead and shif...
March 17, 2009
2002 Jaguar S-Type 4.0L Misfire, MIL Lamp on VIN: SAJDA01P82
... light and took it for a test drive. it cant get out of its own way and then set codes P0300 P0302 P0303 P0304 P0306. i have checked iatn for same problems and looked over the car with what o...
March 17, 2009
1997 Subaru Impreza L 2.2L Misfire, MIL Lamp on VIN: JF1GL4357V
P0304: Cylinder 4 Misfire Detected. Never did feel misfire on road test,only fault noticed is some minor popping out of exhaust on low gear decell,is this normal?did not hear any exhaust leaks on inspection of system. Also on moisture test of coil and wires with spray bottle did misfire one time...
March 18, 2009
2002 Honda Accord Value Package 2.3L Cuts out, Misfire VIN: 1HGCF86652
P0304: Cylinder 4 Misfire Detected. Honda specialists, please help. This car will level out at about 4500 RPM's under full throttle and will not speed up at all or shift to second gear when it reaches this point unless you start to let off of the gas pedal some and then it will go ahead and shif...
March 20, 2009
1997 Subaru Impreza L 2.2L Misfire, MIL Lamp on VIN: JF1GL4357V
P0304: Cylinder 4 Misfire Detected. Never did feel misfire on road test,only fault noticed is some minor popping out of exhaust on low gear decell,is this normal?did not hear any exhaust leaks on inspection of system. Also on moisture test of coil and wires with spray bottle did misfire one time...
March 20, 2009
2001 Jeep Cherokee Sport 4.0L MIL Lamp on VIN: 1J4FT47S51
P0304: Cylinder 4 Misfire Detected. Hello group, I have one that has been wished on me. This truck was involved in an accident. The owner hit a deer on the driver side front corner. The car was taken to a body shop and repaired. I have found several things that were left undone. Those I have rep...
March 23, 2009
1998 Chevrolet C1500 Cheyenne 4.3L Poor Idle Quality, MIL Lamp on VIN: 1GCEC14W8W
P0304: Cylinder 4 Misfire Detected. thanks for taking the time to read my posting.truck came in with above codes.miss code was a bent plug electrode on #4.cleared codes seems to run okay but idle at 1200 rpm.manually worked iac and it would get stuck.sprayed for vacumm leaks and found none pinch...
March 24, 2009
1996 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: 1J4GZ58S3T
P0304: Cylinder 4 Misfire Detected. ... customer. Came in for a smog pre-test. He knew his Check Engine light was on. I performed the Calif. TSI test. The car passes emissions, But failed for P0300,301,302,303,304,305, AND 306. The local dealer had replaced the pcm 3 ...
March 24, 2009
2003 Audi A4 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WAULC68E13
P0304: Misfire cyl 4. ... 1, p0328 knock sensor circuit high input, p0300, p0301, p0302, p0303,p0304 all misfire codes. The MAF was defective ...
March 28, 2009
1997 Ford Ranger Splash 2.3L Misfire, MIL Lamp on VIN: 1FTCR10A4V
P0304: misfire cylinder 4 flashes. Customer was driving down highway one day, and this situation happened while driving. Runs great (even under load) up to around 50 MPH and even higher under no load. At aprox 55 MPH (under load)can hear some spark knock then Cyl 4 cuts out - Always. We have be...
March 03, 2009
2001 Toyota Celica GT 1.8L Poor Idle Quality, Misfire VIN: JTDDR32T91
P0304: Cylinder 4 Misfire Detected. Customer just recently purchased this car via E-bay. The original complaint was no idle when cold. Customer had the car at another shop for one week, A new Maf was installed with very little improvement. They told the customer that the car needed a new t-belt ...
March 04, 2009
2001 Jeep Grand Cherokee Laredo 4.0L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1J4GW48S61
P0304: Cylinder 4 Misfire Detected. Vehicle came in with a no start condition. No fuel pressure and a crank postion code P0320. Replaced the crank sensor and the fuel pump. Vehicle drove good until it go hot (15-20mins). The misfire codes popped up and the vehicle misfired bad. Checked the synce...
March 10, 2009
2000 Chevrolet S10 2.2L Misfire, MIL Lamp on VIN: 1GCCS195XY
P0304: Cylinder 4 Misfire Detected. Hello, I have this little truck here that has been to a couple of different shops locally and now to me, when first started it runs o.k. for a few seconds then starts missing on #4 cylinder. Checked compression, has 125 cranking compression across the board, f...
March 11, 2009
2005 Kia Sorento EX 3.5L Poor Idle Quality, MIL Lamp on VIN: KNDJD73375
P0304: Cylinder 4 Misfire Detected. ... light. Codes P0300, P0302, P0304, & P0306. The enine seems to idle a little rough but goes away immidiattly off of idle. Runs great down the road just idles rough. Did a smoke test and found a vac. hose on the right rear of plenum broken. Repaired and ...
March 12, 2009
2002 Honda Accord Value Package 2.3L Cuts out, Misfire VIN: 1HGCF86652
P0304: Cylinder 4 Misfire Detected. Honda specialists, please help. This car will level out at about 4500 RPM's under full throttle and will not speed up at all or shift to second gear when it reaches this point unless you start to let off of the gas pedal some and then it will go ahead and shif...
March 17, 2009
2002 Jaguar S-Type 4.0L Misfire, MIL Lamp on VIN: SAJDA01P82
... light and took it for a test drive. it cant get out of its own way and then set codes P0300 P0302 P0303 P0304 P0306. i have checked iatn for same problems and looked over the car with what o...
March 17, 2009
1997 Subaru Impreza L 2.2L Misfire, MIL Lamp on VIN: JF1GL4357V
P0304: Cylinder 4 Misfire Detected. Never did feel misfire on road test,only fault noticed is some minor popping out of exhaust on low gear decell,is this normal?did not hear any exhaust leaks on inspection of system. Also on moisture test of coil and wires with spray bottle did misfire one time...
March 18, 2009
2002 Honda Accord Value Package 2.3L Cuts out, Misfire VIN: 1HGCF86652
P0304: Cylinder 4 Misfire Detected. Honda specialists, please help. This car will level out at about 4500 RPM's under full throttle and will not speed up at all or shift to second gear when it reaches this point unless you start to let off of the gas pedal some and then it will go ahead and shif...
March 20, 2009
1997 Subaru Impreza L 2.2L Misfire, MIL Lamp on VIN: JF1GL4357V
P0304: Cylinder 4 Misfire Detected. Never did feel misfire on road test,only fault noticed is some minor popping out of exhaust on low gear decell,is this normal?did not hear any exhaust leaks on inspection of system. Also on moisture test of coil and wires with spray bottle did misfire one time...
March 20, 2009
2001 Jeep Cherokee Sport 4.0L MIL Lamp on VIN: 1J4FT47S51
P0304: Cylinder 4 Misfire Detected. Hello group, I have one that has been wished on me. This truck was involved in an accident. The owner hit a deer on the driver side front corner. The car was taken to a body shop and repaired. I have found several things that were left undone. Those I have rep...
March 23, 2009
1998 Chevrolet C1500 Cheyenne 4.3L Poor Idle Quality, MIL Lamp on VIN: 1GCEC14W8W
P0304: Cylinder 4 Misfire Detected. thanks for taking the time to read my posting.truck came in with above codes.miss code was a bent plug electrode on #4.cleared codes seems to run okay but idle at 1200 rpm.manually worked iac and it would get stuck.sprayed for vacumm leaks and found none pinch...
March 24, 2009
1996 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: 1J4GZ58S3T
P0304: Cylinder 4 Misfire Detected. ... customer. Came in for a smog pre-test. He knew his Check Engine light was on. I performed the Calif. TSI test. The car passes emissions, But failed for P0300,301,302,303,304,305, AND 306. The local dealer had replaced the pcm 3 ...
March 24, 2009
2003 Audi A4 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WAULC68E13
P0304: Misfire cyl 4. ... 1, p0328 knock sensor circuit high input, p0300, p0301, p0302, p0303,p0304 all misfire codes. The MAF was defective ...
March 28, 2009