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P0304 Diagnostic Trouble Code Discussion for September 2008

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
1997 Ford Escort LX 2.0L Stall, MIL Lamp on, HARD START VIN: 1FALP13P7V
P0304: cyl. 4 misfire detected. ... escort that was towed in over the weekend.Customer states while sitting in traffic he heard a loud jinling type noise when he accelerated.Car stalled but restarted ok.He drove aprox.1 mile down the road and when accelerating from a stop engine stalled whil...
September 02, 2008
1997 Jeep Wrangler Sport 4.0L No Start VIN: 1J4FY19S7V
P0304: Cylinder 4 Misfire Detected. Vehicle cranks but no start after sitting for a period of time. Wait 1-2 days, vehicle starts fine and flags codes for CMP sensor and sometimes misfire #4. I have never personally seen this happen, only the codes. Replaced CKP and distributor, no change. Very ...
September 08, 2008
1997 Honda Accord EX 2.2L Cuts out, Misfire, MIL Lamp on VIN: 1HGCD5667V
P0304: Cylinder 4 Misfire Detected. the car runs good "while driving" four 20 minutes then will not go past 4200 rpm. in any gear and sets misfire code even though you do not feel misfire. have cleaned egr, checked for restricted exhaust, fuel pressure and volume are good, replaced dist....
September 15, 2008
2002 Audi A4 3.0L Misfire, MIL Lamp on VIN: WAULT68E52
P0304: misfire 4. OK, This one is weirding me out, so thought Id ask as it seems like something native AUDI/VW that Im unaware of. The description lists this as a MISFIRE concern, the MIL agrees, but I dont as of yet. The vehicle got the timing belt job, then redid belt for mil...
September 16, 2008
2000 Dodge Intrepid 2.7L MIL Lamp on VIN: 2B3HD46R2Y
P0304: Cylinder 4 Misfire Detected. ... use some help on this one. We are working on a 2000 Dodge Intrepid with a 2.7 fed. emisions engine. It keeps setting a P0300 with 302,304,305 pending. Vehicle has new plugs (Champion O.E.), no noticeable miss hot or cold...
September 16, 2008
2000 Dodge Intrepid 2.7L MIL Lamp on VIN: 2B3HD46R2Y
P0304: Cylinder 4 Misfire Detected. ... use some help on this one. We are working on a 2000 Dodge Intrepid with a 2.7 fed. emisions engine. It keeps setting a P0300 with 302,304,305 pending. Vehicle has new plugs (Champion O.E.), no noticeable miss hot or cold...
September 18, 2008
1997 Jeep Wrangler Sport 4.0L No Start VIN: 1J4FY19S7V
P0304: Cylinder 4 Misfire Detected. Vehicle cranks but no start after sitting for a period of time. Wait 1-2 days, vehicle starts fine and flags codes for CMP sensor and sometimes misfire #4. I have never personally seen this happen, only the codes. Replaced CKP and distributor, no change. Very ...
September 18, 2008
1999 Chevrolet K1500 Suburban 5.7L Misfire VIN: 3GNFK16R7X
P0304: Cylinder 4 Misfire Detected. ... Suburban that's giving me fits. Cust. complaint was ses light comes on, then goes off. Pulled codes & P0304 was stored. Check misfire data with mastertech. Was showing over 20,000 misfires on cyl # 4. Freeze data showed fuel trims good, was at cruise s...
September 26, 2008
2001 Lincoln LS 3.9L Poor Idle Quality, Misfire VIN: A61Y670493
P0304: cylinder 4 misfire. car idles like a drag car.code po304 stored replace 4 coils on bank 1 compression on #4 cylinder is 160psi.spark plug was in gap & looked to be burning normal.sent injectors out to be tested & all is well.replaced maf.engine above idle runs smoothly wi...
September 26, 2008
2000 Honda CR-V EX 2.0L Misfire VIN: JHLRD1866Y
P0304: Cylinder 4 Misfire Detected. intermitent misfire on cylinder 4. most noticable on decel and when coming to a stop. suspect sticky exhaust valve? no tsb to help with clean procedure. seem to have short term improvement after valve cleaning with engine oil additiv(cleaner). looking for advi...
September 27, 2008
1997 Cadillac Catera 3.0L Misfire, MIL Lamp on
P0304: Cylinder 4 Misfire Detected. vehicle has new spark plugs. problem existed before. no spark to #4 spark plug. tested and replaced #4 plug wire. no difference. removed coil for testing. dont have resistance (ohms) values for the coil pack, but, found NO difference in reading between correct...
September 28, 2008
2001 Lincoln LS 3.9L Poor Idle Quality, Misfire VIN: A61Y670493
P0304: cylinder 4 misfire. car idles like a drag car.code po304 stored replace 4 coils on bank 1 compression on #4 cylinder is 160psi.spark plug was in gap & looked to be burning normal.sent injectors out to be tested & all is well.replaced maf.engine above idle runs smoothly wi...
September 30, 2008
1997 Ford Escort LX 2.0L Stall, MIL Lamp on, HARD START VIN: 1FALP13P7V
P0304: cyl. 4 misfire detected. ... escort that was towed in over the weekend.Customer states while sitting in traffic he heard a loud jinling type noise when he accelerated.Car stalled but restarted ok.He drove aprox.1 mile down the road and when accelerating from a stop engine stalled whil...
September 02, 2008
1997 Jeep Wrangler Sport 4.0L No Start VIN: 1J4FY19S7V
P0304: Cylinder 4 Misfire Detected. Vehicle cranks but no start after sitting for a period of time. Wait 1-2 days, vehicle starts fine and flags codes for CMP sensor and sometimes misfire #4. I have never personally seen this happen, only the codes. Replaced CKP and distributor, no change. Very ...
September 08, 2008
1997 Honda Accord EX 2.2L Cuts out, Misfire, MIL Lamp on VIN: 1HGCD5667V
P0304: Cylinder 4 Misfire Detected. the car runs good "while driving" four 20 minutes then will not go past 4200 rpm. in any gear and sets misfire code even though you do not feel misfire. have cleaned egr, checked for restricted exhaust, fuel pressure and volume are good, replaced dist....
September 15, 2008
2002 Audi A4 3.0L Misfire, MIL Lamp on VIN: WAULT68E52
P0304: misfire 4. OK, This one is weirding me out, so thought Id ask as it seems like something native AUDI/VW that Im unaware of. The description lists this as a MISFIRE concern, the MIL agrees, but I dont as of yet. The vehicle got the timing belt job, then redid belt for mil...
September 16, 2008
2000 Dodge Intrepid 2.7L MIL Lamp on VIN: 2B3HD46R2Y
P0304: Cylinder 4 Misfire Detected. ... use some help on this one. We are working on a 2000 Dodge Intrepid with a 2.7 fed. emisions engine. It keeps setting a P0300 with 302,304,305 pending. Vehicle has new plugs (Champion O.E.), no noticeable miss hot or cold...
September 16, 2008
2000 Dodge Intrepid 2.7L MIL Lamp on VIN: 2B3HD46R2Y
P0304: Cylinder 4 Misfire Detected. ... use some help on this one. We are working on a 2000 Dodge Intrepid with a 2.7 fed. emisions engine. It keeps setting a P0300 with 302,304,305 pending. Vehicle has new plugs (Champion O.E.), no noticeable miss hot or cold...
September 18, 2008
1997 Jeep Wrangler Sport 4.0L No Start VIN: 1J4FY19S7V
P0304: Cylinder 4 Misfire Detected. Vehicle cranks but no start after sitting for a period of time. Wait 1-2 days, vehicle starts fine and flags codes for CMP sensor and sometimes misfire #4. I have never personally seen this happen, only the codes. Replaced CKP and distributor, no change. Very ...
September 18, 2008
1999 Chevrolet K1500 Suburban 5.7L Misfire VIN: 3GNFK16R7X
P0304: Cylinder 4 Misfire Detected. ... Suburban that's giving me fits. Cust. complaint was ses light comes on, then goes off. Pulled codes & P0304 was stored. Check misfire data with mastertech. Was showing over 20,000 misfires on cyl # 4. Freeze data showed fuel trims good, was at cruise s...
September 26, 2008
2001 Lincoln LS 3.9L Poor Idle Quality, Misfire VIN: A61Y670493
P0304: cylinder 4 misfire. car idles like a drag car.code po304 stored replace 4 coils on bank 1 compression on #4 cylinder is 160psi.spark plug was in gap & looked to be burning normal.sent injectors out to be tested & all is well.replaced maf.engine above idle runs smoothly wi...
September 26, 2008
2000 Honda CR-V EX 2.0L Misfire VIN: JHLRD1866Y
P0304: Cylinder 4 Misfire Detected. intermitent misfire on cylinder 4. most noticable on decel and when coming to a stop. suspect sticky exhaust valve? no tsb to help with clean procedure. seem to have short term improvement after valve cleaning with engine oil additiv(cleaner). looking for advi...
September 27, 2008
1997 Cadillac Catera 3.0L Misfire, MIL Lamp on
P0304: Cylinder 4 Misfire Detected. vehicle has new spark plugs. problem existed before. no spark to #4 spark plug. tested and replaced #4 plug wire. no difference. removed coil for testing. dont have resistance (ohms) values for the coil pack, but, found NO difference in reading between correct...
September 28, 2008
2001 Lincoln LS 3.9L Poor Idle Quality, Misfire VIN: A61Y670493
P0304: cylinder 4 misfire. car idles like a drag car.code po304 stored replace 4 coils on bank 1 compression on #4 cylinder is 160psi.spark plug was in gap & looked to be burning normal.sent injectors out to be tested & all is well.replaced maf.engine above idle runs smoothly wi...
September 30, 2008