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P0304 Diagnostic Trouble Code Discussion for July 2010

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
1999 Chrysler 300M 3.5L Poor Idle Quality, MIL Lamp on VIN: 2C3HE66G6X
P0304: Cylinder 4 Misfire Detected. ... shop last week overheating and with a check engine light on. We replaced the fan assembly to fix the o/heat condition, and checked the codes. At the time it had a p0300-random cyl. misfire. I had cleared the codes out and le...
July 01, 2010
1995 Toyota Previa LE 2.4L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: JT3GK12M3T
P0304: testing and results. This previa is driving mi crazy; it came from some other shops and we havent foud the problem is runnig very lean o2 sensor reading 0.00 all the time fuel pressure, fuel injectors ok 13.9 oms no vacuum leaks,scaner data: long t ft 20.31% short 20%, mass 8.3 g/...
July 07, 2010
1999 Chevrolet Tahoe LS 5.7L Misfire, MIL Lamp on VIN: 1GNEK13R9X
P0304: Cylinder 4 Misfire Detected. My own vehicle bought at 100k miles soon after developed a misfire cyl #8 which turned out to be a sticking ex. valve after research indicated this model has that history. Removed retainer/spring & cleaned guide with throttle body cleaner & problem sol...
July 14, 2010
2004 Porsche 911 Carrera 4S 3.6L MIL Lamp on VIN: WPOCA29924
P0304: misfire cyl 4. Car starts and runs ok until warm, at which point some part throttle misfiring can be felt.
July 16, 2010
1997 Ford Explorer XLT 4.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FMDU32E1V
P0304: Cyl 4 misfire. Hello to all and thanks in advance for your help. This is for my own car . There was a little rapping noise at the top of the engine and the cylinder on bank 2 ( cyl 4-5-6 ) misfire all the time i did acompresion test on this bank and it has 145 all of them an...
July 19, 2010
1999 Honda Civic EX 1.6L Misfire VIN: 1HGEJ864XX
P0304: cyl4. ok honda guys im at your mercy this car has a misfire on all cyl only under load when cold codes set at 120f ect fuel pressure is good when occurring only last a short while then clears until vehicle cools for a while i havent been able to scope crank n cam wh...
July 19, 2010
1995 Toyota Previa LE 2.4L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: JT3GK12M3T
P0304: testing and results. This previa is driving mi crazy; it came from some other shops and we havent foud the problem is runnig very lean o2 sensor reading 0.00 all the time fuel pressure, fuel injectors ok 13.9 oms no vacuum leaks,scaner data: long t ft 20.31% short 20%, mass 8.3 g/...
July 21, 2010
2002 Toyota Tundra Limited 4.7L Misfire, MIL Lamp on
P0304: Cylinder 4 Misfire Detected. Customer came in for a 150,000 mile check. Performed inspection and power steering flush. Cleared P0161 as a courtesy. No other work done except flush. Customer picked up and drove 10 miles, turned off vehicle and restarted 20 minutes later. Heavy miss at idle...
July 21, 2010
1999 Chevrolet Astro LT 4.3L Misfire, MIL Lamp on VIN: 1GNDM19W3X
P0304: Cyl 4 misfire. ... taken care of. They have never done any maintenance or tune-up on it. Complaint of MIL and misfire, very intermittently. I did full tune-up, see history. Two weeks later, has MIL and misfire code P0304 again, with intermittent misfire, always on the highwa...
July 23, 2010
2006 Volkswagen Passat 2.0T 2.0L Misfire, MIL Lamp on VIN: WVWAK73C66
P0304: missfire 4. Have a passat here with a inter. missfire mainly under load and warm keeps returning missfire for #4 cylinder car runs great all other times and it has to be good and warm before it starts and it is very intermitant tried switching the new coil to #2 cylinder ...
July 23, 2010
2002 Dodge Grand Caravan EX 3.8L Poor Idle Quality, MIL Lamp on VIN: 2B4GP74L22
P0304: Cylinder 4 Misfire Detected. Running poorly, highway and idle. Never died. Ckd codes, had random and specific cylinder misfires. Scoped. Had original coil, weak, replaced. No difference. Interesting fact: with a/c off 18 inches of vacuum; a/c on, drops to 10 inches of vacuum. Also, a very...
July 26, 2010
2005 Kia Sportage LX 2.7L No Start, Stall, MIL Lamp on VIN: KNDJE723X5
P0304: Cylinder 4 Misfire Detected. Customer drove in this morning and stated she got on highway and vehicle died,all light on dash illuminated. Engine turned over but would not restart. After 3-4 trys engine started and ran normally. We are unable to duplcate her concern.
July 26, 2010
2003 Chrysler PT Cruiser GT 2.4L MIL Lamp on, Limp mode VIN: 3C8FY78G13
P0304: Cylinder 4 Misfire Detected. Hello to all and thank you in advance. I have a 2003 PT Cruiser with a 2.4 Turbo automatic trans. Car come in with idle problem, intermittently going into limp mode and check engine light. I tuned car up plugs wires and plenum gasket by customer request. Car i...
July 28, 2010
2000 Honda CR-V EX 2.0L MIL Lamp on
P0304: Cylinder 4 Misfire Detected. Vehicle came in for a stall or quit while driving, replaced distibutor with a complete new unit, new plugs and wires.Mil light will come on above idle and a code set for #4 misfire although no misfire is felt.Swapped plugs and no change, injector has a nice st...
July 29, 2010