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P0304 Diagnostic Trouble Code Discussion for January 2010

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2000 Volkswagen Passat GLS 2.8L MIL Lamp on VIN: WVWVD23B2Y
P0304: cyl 4 miss. I replaced the chain tensioner a few months ago. I TRIPLE checked the timing. I have 16 links between the two marks on the cam that are lined up perfectly with the arrows on the caps when the crank pulley is lined up with the notch on the timing cover and both...
January 04, 2010
2005 Kia Sedona LX 3.5L Misfire, MIL Lamp on VIN: KNDUP13205
P0304: Cylinder 4 Misfire Detected. We got the vehicle from the 2nd Kia dealer the first said the repair wouldn't be covered. The 2nd couldn't under stand how the p/s belt problem could cause the t/belt to jump 4 teeth. The 2nd dealer put the timing marks on and started it up with a miss on #4 t...
January 05, 2010
2000 Volkswagen Passat GLS 2.8L MIL Lamp on VIN: WVWVD23B2Y
P0304: cyl 4 miss. I replaced the chain tensioner a few months ago. I TRIPLE checked the timing. I have 16 links between the two marks on the cam that are lined up perfectly with the arrows on the caps when the crank pulley is lined up with the notch on the timing cover and both...
January 05, 2010
1996 Nissan Pathfinder LE 3.3L MIL Lamp on, sometimes flashing , VIN: JN8AR05Y7T
P0304: Cylinder 4 Misfire Detected. ... first time npf. cleared ran 2-3 weeks ok then set po304 again. still no complant cust said it never ran different at all. cleared. this time she brought it in with light flashing , p0306, running perfectly fine? dose this have a second crank sensor for mis...
January 06, 2010
1996 Nissan Pathfinder LE 3.3L MIL Lamp on, sometimes flashing , VIN: JN8AR05Y7T
P0304: Cylinder 4 Misfire Detected. ... first time npf. cleared ran 2-3 weeks ok then set po304 again. still no complant cust said it never ran different at all. cleared. this time she brought it in with light flashing , p0306, running perfectly fine? dose this have a second crank sensor for mis...
January 07, 2010
2001 Mercury Cougar V6 2.5L Hesitation, Surge, Stall, MIL Lamp on, VIN: 1ZWFT61L81
P0304: 4 Cylinder Misfire. Car ran so good when cold that I thought nothing was wrong till it got to operating temp. Then it has no power, bearly starts and will only accelerate to 1100 rpm. Fuel pressure on scanner stays at 38 - 40 lb. when running bad. How do I tell if MAS Sensor is O...
January 09, 2010
2001 Volkswagen Jetta GLS 1.8L Misfire, MIL Lamp on VIN: 3VWSD69M21
P0304: misfire 3 cyl. This vehicle has come is with the same codes 2 times.The maf was replaced & codes cleared and vehicle was good for about 1 month.We reinspected and found the wire harness to the ignition coils cracking.Found bulletin in alldata #04-02 for a wire harness ov...
January 10, 2010
2003 Mazda Tribute ES 3.0L Poor Idle Quality, MIL Lamp on VIN: 4F2CZ96173
P0304: Cylinder 4 Misfire Detected. Hello all, I am looking for some info. or help in finding a certified used catalytic converter. I was told during a CTI class years ago that they are available to purchase and if anyone could help me with either a company name or a phone number i would really ...
January 12, 2010
2002 Jeep Liberty Sport 3.7L Poor Idle Quality, Misfire VIN: 1J4GL58K52
P0304: Cylinder 4 Misfire Detected. ... rough all times came in with ck eng. light on and p0304. Car makes poping noises from intake, while idleing and when driveing. I have tested compression all cyl. and is 150-175psi, pulled injectors and inspected spray pattern, swapped coils and injectors. ...
January 13, 2010
2004 Subaru Impreza WRX 2.0L Stall, Missfire Codes VIN: JF1GG29604
P0304: Cylinder 4 Misfire Detected. This vehicle has an interrmittent decel stall, and keeps setting all 4 cylinder missfire codes even though the engine runs perfect. Spark plugs and all coil packs have been replaced, timing belt was recently replaced while inspecting crank and cam gears for da...
January 13, 2010
1999 Subaru Legacy Outback 2.5L Misfire, MIL Lamp on VIN: 4S3BG6850X
P0304: Cylinder 4 Misfire Detected. ... with check engine light on hade code P0304.Check spark with tester all o.k. Checked plugs worn installed new plugs cleared code and road test with two key cycles no check engine light on.Release vehicle to customer drove car down the street and check engin...
January 22, 2010
2003 Volkswagen Passat GLX 2.8L Misfire VIN: WVWRH63B53
P0304: cylinder misfire. Intermittently cold or hot, feels like one cylinder goes to dead misfire usually right after engine is revved. Plugs seem to be a little fuel fouled, injector service performed, monitored coolant sensor throughout warm up cycle, checked for vacuum leaks, notic...
January 22, 2010
2005 Toyota Camry 2.4L Misfire, MIL Lamp on
P0304: Cylinder 4 Misfire Detected. has anyone seen a problem like this. this car have been checked by other two tech. they replaced spark plugs and the coolant temperature senor. of course car is back. now car is under my care. fuel trim when it happens is under 7 percent, it has fuel pressure,...
January 23, 2010
2001 Hyundai Elantra GLS 2.0L Hesitation, Misfire VIN: KMHDN45D31
P0304: Cylinder 4 Misfire Detected. Car has had an intermittent misfire under partial load, 1500 to 2800 rpm, generally in third or fourth gear, maybe about quarter throttle. Performed compression test, checked for vacuum leaks. Just seems to be isolated to #4 cylinder, Check PCV Valve, Tested a...
January 25, 2010
2002 Audi A6 Quattro Avant 3.0L Misfire, MIL Lamp on VIN: WAUVT64B92
P0304: Cylinder 4 Misfire Detected. ... bank misfiring. Found that the intake manifold was leaking on the right bank. Vehicle was also due for a timing belt so both parts were replaced. Vehicle now has a P0341 (camshaft position sensor circuit range/performance) ...
January 28, 2010
2001 Acura MDX 3.5L Misfire VIN: 2HNYD18811
P0304: Cylinder 4 Misfire Detected. We replaced all the coils and spark plugs on this engine when we did a top end engine overhaul April 2009. Since then the car has been back 3 times with the check engine light on when scanned we get a variation of these 3 codes . The first time we had No 5 and...
January 29, 2010
2002 Audi A6 Quattro Avant 3.0L Misfire, MIL Lamp on VIN: WAUVT64B92
P0304: Cylinder 4 Misfire Detected. ... bank misfiring. Found that the intake manifold was leaking on the right bank. Vehicle was also due for a timing belt so both parts were replaced. Vehicle now has a P0341 (camshaft position sensor circuit range/performance) ...
January 29, 2010
2000 Volkswagen Passat GLS 2.8L MIL Lamp on VIN: WVWVD23B2Y
P0304: cyl 4 miss. I replaced the chain tensioner a few months ago. I TRIPLE checked the timing. I have 16 links between the two marks on the cam that are lined up perfectly with the arrows on the caps when the crank pulley is lined up with the notch on the timing cover and both...
January 04, 2010
2005 Kia Sedona LX 3.5L Misfire, MIL Lamp on VIN: KNDUP13205
P0304: Cylinder 4 Misfire Detected. We got the vehicle from the 2nd Kia dealer the first said the repair wouldn't be covered. The 2nd couldn't under stand how the p/s belt problem could cause the t/belt to jump 4 teeth. The 2nd dealer put the timing marks on and started it up with a miss on #4 t...
January 05, 2010
2000 Volkswagen Passat GLS 2.8L MIL Lamp on VIN: WVWVD23B2Y
P0304: cyl 4 miss. I replaced the chain tensioner a few months ago. I TRIPLE checked the timing. I have 16 links between the two marks on the cam that are lined up perfectly with the arrows on the caps when the crank pulley is lined up with the notch on the timing cover and both...
January 05, 2010
1996 Nissan Pathfinder LE 3.3L MIL Lamp on, sometimes flashing , VIN: JN8AR05Y7T
P0304: Cylinder 4 Misfire Detected. ... first time npf. cleared ran 2-3 weeks ok then set po304 again. still no complant cust said it never ran different at all. cleared. this time she brought it in with light flashing , p0306, running perfectly fine? dose this have a second crank sensor for mis...
January 06, 2010
1996 Nissan Pathfinder LE 3.3L MIL Lamp on, sometimes flashing , VIN: JN8AR05Y7T
P0304: Cylinder 4 Misfire Detected. ... first time npf. cleared ran 2-3 weeks ok then set po304 again. still no complant cust said it never ran different at all. cleared. this time she brought it in with light flashing , p0306, running perfectly fine? dose this have a second crank sensor for mis...
January 07, 2010
2001 Mercury Cougar V6 2.5L Hesitation, Surge, Stall, MIL Lamp on, VIN: 1ZWFT61L81
P0304: 4 Cylinder Misfire. Car ran so good when cold that I thought nothing was wrong till it got to operating temp. Then it has no power, bearly starts and will only accelerate to 1100 rpm. Fuel pressure on scanner stays at 38 - 40 lb. when running bad. How do I tell if MAS Sensor is O...
January 09, 2010
2001 Volkswagen Jetta GLS 1.8L Misfire, MIL Lamp on VIN: 3VWSD69M21
P0304: misfire 3 cyl. This vehicle has come is with the same codes 2 times.The maf was replaced & codes cleared and vehicle was good for about 1 month.We reinspected and found the wire harness to the ignition coils cracking.Found bulletin in alldata #04-02 for a wire harness ov...
January 10, 2010
2003 Mazda Tribute ES 3.0L Poor Idle Quality, MIL Lamp on VIN: 4F2CZ96173
P0304: Cylinder 4 Misfire Detected. Hello all, I am looking for some info. or help in finding a certified used catalytic converter. I was told during a CTI class years ago that they are available to purchase and if anyone could help me with either a company name or a phone number i would really ...
January 12, 2010
2002 Jeep Liberty Sport 3.7L Poor Idle Quality, Misfire VIN: 1J4GL58K52
P0304: Cylinder 4 Misfire Detected. ... rough all times came in with ck eng. light on and p0304. Car makes poping noises from intake, while idleing and when driveing. I have tested compression all cyl. and is 150-175psi, pulled injectors and inspected spray pattern, swapped coils and injectors. ...
January 13, 2010
2004 Subaru Impreza WRX 2.0L Stall, Missfire Codes VIN: JF1GG29604
P0304: Cylinder 4 Misfire Detected. This vehicle has an interrmittent decel stall, and keeps setting all 4 cylinder missfire codes even though the engine runs perfect. Spark plugs and all coil packs have been replaced, timing belt was recently replaced while inspecting crank and cam gears for da...
January 13, 2010
1999 Subaru Legacy Outback 2.5L Misfire, MIL Lamp on VIN: 4S3BG6850X
P0304: Cylinder 4 Misfire Detected. ... with check engine light on hade code P0304.Check spark with tester all o.k. Checked plugs worn installed new plugs cleared code and road test with two key cycles no check engine light on.Release vehicle to customer drove car down the street and check engin...
January 22, 2010
2003 Volkswagen Passat GLX 2.8L Misfire VIN: WVWRH63B53
P0304: cylinder misfire. Intermittently cold or hot, feels like one cylinder goes to dead misfire usually right after engine is revved. Plugs seem to be a little fuel fouled, injector service performed, monitored coolant sensor throughout warm up cycle, checked for vacuum leaks, notic...
January 22, 2010
2005 Toyota Camry 2.4L Misfire, MIL Lamp on
P0304: Cylinder 4 Misfire Detected. has anyone seen a problem like this. this car have been checked by other two tech. they replaced spark plugs and the coolant temperature senor. of course car is back. now car is under my care. fuel trim when it happens is under 7 percent, it has fuel pressure,...
January 23, 2010
2001 Hyundai Elantra GLS 2.0L Hesitation, Misfire VIN: KMHDN45D31
P0304: Cylinder 4 Misfire Detected. Car has had an intermittent misfire under partial load, 1500 to 2800 rpm, generally in third or fourth gear, maybe about quarter throttle. Performed compression test, checked for vacuum leaks. Just seems to be isolated to #4 cylinder, Check PCV Valve, Tested a...
January 25, 2010
2002 Audi A6 Quattro Avant 3.0L Misfire, MIL Lamp on VIN: WAUVT64B92
P0304: Cylinder 4 Misfire Detected. ... bank misfiring. Found that the intake manifold was leaking on the right bank. Vehicle was also due for a timing belt so both parts were replaced. Vehicle now has a P0341 (camshaft position sensor circuit range/performance) ...
January 28, 2010
2001 Acura MDX 3.5L Misfire VIN: 2HNYD18811
P0304: Cylinder 4 Misfire Detected. We replaced all the coils and spark plugs on this engine when we did a top end engine overhaul April 2009. Since then the car has been back 3 times with the check engine light on when scanned we get a variation of these 3 codes . The first time we had No 5 and...
January 29, 2010
2002 Audi A6 Quattro Avant 3.0L Misfire, MIL Lamp on VIN: WAUVT64B92
P0304: Cylinder 4 Misfire Detected. ... bank misfiring. Found that the intake manifold was leaking on the right bank. Vehicle was also due for a timing belt so both parts were replaced. Vehicle now has a P0341 (camshaft position sensor circuit range/performance) ...
January 29, 2010