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P0304 Diagnostic Trouble Code Discussion for May 2009

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2003 Honda Civic Si 2.0L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: SHHEP33513
P0304: Cylinder 4 Misfire Detected. This vehicle came in barely running.Misfiring on all cylinders.Way too much fuel,plugs were black.Oxygen sesnsor comes and goes.When it is reading its 1.2 volts and long term and short fuel trims maxed fuel reduction.I have good spark to all cylinders.Replaced...
May 02, 2009
2008 Chevrolet Colorado LT 3.7L Misfire VIN: 1GCDT13E18
P0304: 4 missfire detected. Ok here we go. This wonderful vehicle is a SALVAGE vehicle bought at a used car dealer with no warranty as is. This thing was in a head on collision previously, bad enough to put the engine in the firewall about 4-5 inches. Anyway body shop hacked this thing u...
May 05, 2009
2002 Honda Accord EX 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1HGCG22562
P0304: Cylinder 4 Misfire Detected. ... first time. I did a tune up and scheduled maintenance service. Car returned 4 days later as a no start. Turns out it ran out of gas. Added 2 gallons of gas and it started right up. Customer opted for Timing Belt Service. Returned next day with bad misfirin...
May 05, 2009
2002 Honda Accord EX 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1HGCG22562
P0304: Cylinder 4 Misfire Detected. ... first time. I did a tune up and scheduled maintenance service. Car returned 4 days later as a no start. Turns out it ran out of gas. Added 2 gallons of gas and it started right up. Customer opted for Timing Belt Service. Returned next day with bad misfirin...
May 07, 2009
2006 Subaru Impreza WRX STI 2.5L Misfire VIN: JF1GD706X6
P0304: Cylinder 4 Misfire Detected. ... with this 2006 STI and could use a fresh look at this problem. This car was brought in for a check engine light and had code P0304.The customer did not complain about the misfire but stated that the light came on shortly after starting the car in the morni...
May 07, 2009
1996 Mazda 626 DX 2.0L Misfire, MIL Lamp on VIN: 1YVGE22C9T
P0304: Cylinder 4 Misfire Detected. ... thing is you couldn't feel any missfire what so ever. when vehicle first arrived at my shop i pulled a pending code and history code p0300 and p0304. the OTHER SHOP before their tune up p...
May 13, 2009
1998 Audi A4 2.8L Poor Idle Quality, MIL Lamp on VIN: WAUED28D7W
P0304: Cyl 4 missfire. ... were extracted we found P0300,P0302,P0304,P0305,and P0306.Codes were cleared and car was test driven. Cel began to flash then remained on steady. Codes were again extracted with P0300,P0304,...
May 22, 2009
2001 Honda Accord EX 3.0L Misfire VIN: 34G3G3G435
P0304: Cylinder 4 Misfire Detected. this car came into our shop today with the brakes sqealing and cruise control not working from a previous repair. during the test drive we notice a sudden loss of power and missfire. engine light on. we scanned first pulled codes for #1 and 6 missfire then aft...
May 23, 2009
2002 Ford Ranger Edge 3.0L Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on, NO POWER. VIN: 1FTYR44V52
P0304: misfire cylinder 4. about 10% of improvement was noticed after repair. the main concern is no power on acceleration. crank and cam signals are ok, no glitches on scope when driving. cam sensor synchronizer is in correct position. no exhaust backprssure exists, removed twc and pro...
May 26, 2009
2004 Land Rover Discovery SE 4.6L Misfire VIN: SALTY194X4
P0304: Missfire Cylinder 4. Vehicle Flags P0304 After driving 20 mins or so. Vehicle Came to us from dealership, who had diagnosed problem as a bad ign. wire. Customer stated He had a coolant leak and also wanted an estimate to replace the lower intake gasket. Decided to replace the gask...
May 27, 2009
2000 Volkswagen Jetta GLS 2.0L Poor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp on VIN: 3VWSC29M7Y
P0304: Misfire. We checked the MAF sensor and the voltage was close; however, it was a little high at idle.
May 27, 2009
2004 Land Rover Discovery SE 4.6L Misfire VIN: SALTY194X4
P0304: Missfire Cylinder 4. Vehicle Flags P0304 After driving 20 mins or so. Vehicle Came to us from dealership, who had diagnosed problem as a bad ign. wire. Customer stated He had a coolant leak and also wanted an estimate to replace the lower intake gasket. Decided to replace the gask...
May 29, 2009
2002 Honda Civic EX 1.7L Misfire, MIL Lamp on VIN: 1HGEM219X2
P0304: cyl 4 misfire. ok everyone. this civic is beating me up! need advise.. i got this 02 civic ex 5sp. only got 59k on it. intermittent misfire. only happens when engine is cold. found spark plugs worn, replaced w/ genuine honda parts. thought o2s1 was slow. replaced w/ denso re...
May 30, 2009
2004 Nissan Altima S 2.5L Stall, MIL Lamp on VIN: 1N4AL11D24
P0304: Cylinder 4 Misfire Detected. Car came in with a p304 misfire code, checked the spark plugs and found the #4 plug had collapsed. Replaced the spark plugs and took it for a test drive. Car stalled half way on a 5 minute drive and started misfiring. Came back and found the #4 spark plug had ...
May 30, 2009
2003 Honda Civic Si 2.0L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: SHHEP33513
P0304: Cylinder 4 Misfire Detected. This vehicle came in barely running.Misfiring on all cylinders.Way too much fuel,plugs were black.Oxygen sesnsor comes and goes.When it is reading its 1.2 volts and long term and short fuel trims maxed fuel reduction.I have good spark to all cylinders.Replaced...
May 02, 2009
2008 Chevrolet Colorado LT 3.7L Misfire VIN: 1GCDT13E18
P0304: 4 missfire detected. Ok here we go. This wonderful vehicle is a SALVAGE vehicle bought at a used car dealer with no warranty as is. This thing was in a head on collision previously, bad enough to put the engine in the firewall about 4-5 inches. Anyway body shop hacked this thing u...
May 05, 2009
2002 Honda Accord EX 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1HGCG22562
P0304: Cylinder 4 Misfire Detected. ... first time. I did a tune up and scheduled maintenance service. Car returned 4 days later as a no start. Turns out it ran out of gas. Added 2 gallons of gas and it started right up. Customer opted for Timing Belt Service. Returned next day with bad misfirin...
May 05, 2009
2002 Honda Accord EX 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1HGCG22562
P0304: Cylinder 4 Misfire Detected. ... first time. I did a tune up and scheduled maintenance service. Car returned 4 days later as a no start. Turns out it ran out of gas. Added 2 gallons of gas and it started right up. Customer opted for Timing Belt Service. Returned next day with bad misfirin...
May 07, 2009
2006 Subaru Impreza WRX STI 2.5L Misfire VIN: JF1GD706X6
P0304: Cylinder 4 Misfire Detected. ... with this 2006 STI and could use a fresh look at this problem. This car was brought in for a check engine light and had code P0304.The customer did not complain about the misfire but stated that the light came on shortly after starting the car in the morni...
May 07, 2009
1996 Mazda 626 DX 2.0L Misfire, MIL Lamp on VIN: 1YVGE22C9T
P0304: Cylinder 4 Misfire Detected. ... thing is you couldn't feel any missfire what so ever. when vehicle first arrived at my shop i pulled a pending code and history code p0300 and p0304. the OTHER SHOP before their tune up p...
May 13, 2009
1998 Audi A4 2.8L Poor Idle Quality, MIL Lamp on VIN: WAUED28D7W
P0304: Cyl 4 missfire. ... were extracted we found P0300,P0302,P0304,P0305,and P0306.Codes were cleared and car was test driven. Cel began to flash then remained on steady. Codes were again extracted with P0300,P0304,...
May 22, 2009
2001 Honda Accord EX 3.0L Misfire VIN: 34G3G3G435
P0304: Cylinder 4 Misfire Detected. this car came into our shop today with the brakes sqealing and cruise control not working from a previous repair. during the test drive we notice a sudden loss of power and missfire. engine light on. we scanned first pulled codes for #1 and 6 missfire then aft...
May 23, 2009
2002 Ford Ranger Edge 3.0L Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on, NO POWER. VIN: 1FTYR44V52
P0304: misfire cylinder 4. about 10% of improvement was noticed after repair. the main concern is no power on acceleration. crank and cam signals are ok, no glitches on scope when driving. cam sensor synchronizer is in correct position. no exhaust backprssure exists, removed twc and pro...
May 26, 2009
2004 Land Rover Discovery SE 4.6L Misfire VIN: SALTY194X4
P0304: Missfire Cylinder 4. Vehicle Flags P0304 After driving 20 mins or so. Vehicle Came to us from dealership, who had diagnosed problem as a bad ign. wire. Customer stated He had a coolant leak and also wanted an estimate to replace the lower intake gasket. Decided to replace the gask...
May 27, 2009
2000 Volkswagen Jetta GLS 2.0L Poor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp on VIN: 3VWSC29M7Y
P0304: Misfire. We checked the MAF sensor and the voltage was close; however, it was a little high at idle.
May 27, 2009
2004 Land Rover Discovery SE 4.6L Misfire VIN: SALTY194X4
P0304: Missfire Cylinder 4. Vehicle Flags P0304 After driving 20 mins or so. Vehicle Came to us from dealership, who had diagnosed problem as a bad ign. wire. Customer stated He had a coolant leak and also wanted an estimate to replace the lower intake gasket. Decided to replace the gask...
May 29, 2009
2002 Honda Civic EX 1.7L Misfire, MIL Lamp on VIN: 1HGEM219X2
P0304: cyl 4 misfire. ok everyone. this civic is beating me up! need advise.. i got this 02 civic ex 5sp. only got 59k on it. intermittent misfire. only happens when engine is cold. found spark plugs worn, replaced w/ genuine honda parts. thought o2s1 was slow. replaced w/ denso re...
May 30, 2009
2004 Nissan Altima S 2.5L Stall, MIL Lamp on VIN: 1N4AL11D24
P0304: Cylinder 4 Misfire Detected. Car came in with a p304 misfire code, checked the spark plugs and found the #4 plug had collapsed. Replaced the spark plugs and took it for a test drive. Car stalled half way on a 5 minute drive and started misfiring. Came back and found the #4 spark plug had ...
May 30, 2009