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P0303 Diagnostic Trouble Code Discussion for January 2005

Cylinder 3 Misfire Detected


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Trouble Ticket Help Requests for DTC P0303
Help Request Posted
1998 Buick LeSabre Custom 3.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G4HP52K2W
P0303: misfire cyl 3. ... came in with Check engine on and code P0303. The customer stated when the car was cold the engine would run fine after 20 minutes or more of driving the car would act up. I tested the output of the coils with a screw type tester and cyl 3 seemed OK at 30k ...
January 07, 2005
2001 Kia Sephia LS 1.8L No Start, Misfire VIN: KNAFB12111
P0303: Cylinder 3 Misfire Detected. vehicle comes in on hook. found #3 spark plug blown out of cylinder. end of plug melted-not just electrode but entire end of plug. ignition wires torn apart. coils appear to be ok.found b1 s2 o2 sensor unplugged-replugged. pulled head-had checked for cracks, f...
January 11, 2005
2004 Ford Ranger Edge 3.0L Misfire, MIL Lamp on VIN: 1FTYR10U34
P0303: 3 missfire. this truck came in w/ a missfire; Missfire codes for cyl.s 1,2,3, & random. Missfires do not show up on ignition scope, compression is good to 130 psi. Engine vaccuum is 18 pounds @ idle, Fuel trim data: Bank One: -5.0 Bank Two: 20.0 Have checked for va...
January 12, 2005
2000 Ford Taurus SE 2-Valve 3.0L Misfire VIN: 1FAFP5522Y
P0303: Missfire 3 cylinder. Car came in for missfire codes #4 and #3. Plug wires were bad and replaced. Now only #3 missfire all the time. #3 injector pulse tested bad. Replaced. No change. Compression test and cylinder leakage test shows no problem. See test results below. Removed and c...
January 14, 2005
2000 Ford Taurus SE 4-Valve 3.0L Excessive Emissions, Poor Idle Quality, Misfire VIN: 1FAFP56S7Y
P0303: testing and results. need help please not expericanced wih this unit towed in to shop, starts runs poor, just like the codes indicate , catalic converter red hot, very hard brake pedal indictive to low vacuum check engine lamp flashing too any help to get me started would be great...
January 21, 2005
2000 Ford Taurus SE 4-Valve 3.0L Excessive Emissions, Poor Idle Quality, Misfire VIN: 1FAFP56S7Y
P0303: testing and results. need help please not expericanced wih this unit towed in to shop, starts runs poor, just like the codes indicate , catalic converter red hot, very hard brake pedal indictive to low vacuum check engine lamp flashing too any help to get me started would be great...
January 24, 2005
1997 Ford E-350 Econoline 5.4L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1FDKE37L3V
P0303: Misfire 3 cylinder. Hello all. This headache was towed in unable to start. A quick check showed a lack of fuel problem so the first check was the fuel filter. It was clogged solid - could not blow through it at all! Replaced fuel filter and was able to get vehicle started. vehicl...
January 25, 2005
1997 Ford E-350 Econoline 5.4L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1FDKE37L3V
P0303: Misfire 3 cylinder. Hello all. This headache was towed in unable to start. A quick check showed a lack of fuel problem so the first check was the fuel filter. It was clogged solid - could not blow through it at all! Replaced fuel filter and was able to get vehicle started. vehicl...
January 26, 2005
2003 Dodge Ram 1500 Truck 4.7L MIL Lamp on VIN: 1D7HU16N13
P0303: Cylinder 3 Misfire Detected. This truck has been here three times for misfire codes. Different cylinders each time but always a code PO300. I can watch the misfire numbers climb on all cylinders if I run the engine at 1000 RPM in nuetral hot engine. I have not tried it cold. All the freez...
January 31, 2005
1998 Buick LeSabre Custom 3.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G4HP52K2W
P0303: misfire cyl 3. ... came in with Check engine on and code P0303. The customer stated when the car was cold the engine would run fine after 20 minutes or more of driving the car would act up. I tested the output of the coils with a screw type tester and cyl 3 seemed OK at 30k ...
January 07, 2005
2001 Kia Sephia LS 1.8L No Start, Misfire VIN: KNAFB12111
P0303: Cylinder 3 Misfire Detected. vehicle comes in on hook. found #3 spark plug blown out of cylinder. end of plug melted-not just electrode but entire end of plug. ignition wires torn apart. coils appear to be ok.found b1 s2 o2 sensor unplugged-replugged. pulled head-had checked for cracks, f...
January 11, 2005
2004 Ford Ranger Edge 3.0L Misfire, MIL Lamp on VIN: 1FTYR10U34
P0303: 3 missfire. this truck came in w/ a missfire; Missfire codes for cyl.s 1,2,3, & random. Missfires do not show up on ignition scope, compression is good to 130 psi. Engine vaccuum is 18 pounds @ idle, Fuel trim data: Bank One: -5.0 Bank Two: 20.0 Have checked for va...
January 12, 2005
2000 Ford Taurus SE 2-Valve 3.0L Misfire VIN: 1FAFP5522Y
P0303: Missfire 3 cylinder. Car came in for missfire codes #4 and #3. Plug wires were bad and replaced. Now only #3 missfire all the time. #3 injector pulse tested bad. Replaced. No change. Compression test and cylinder leakage test shows no problem. See test results below. Removed and c...
January 14, 2005
2000 Ford Taurus SE 4-Valve 3.0L Excessive Emissions, Poor Idle Quality, Misfire VIN: 1FAFP56S7Y
P0303: testing and results. need help please not expericanced wih this unit towed in to shop, starts runs poor, just like the codes indicate , catalic converter red hot, very hard brake pedal indictive to low vacuum check engine lamp flashing too any help to get me started would be great...
January 21, 2005
2000 Ford Taurus SE 4-Valve 3.0L Excessive Emissions, Poor Idle Quality, Misfire VIN: 1FAFP56S7Y
P0303: testing and results. need help please not expericanced wih this unit towed in to shop, starts runs poor, just like the codes indicate , catalic converter red hot, very hard brake pedal indictive to low vacuum check engine lamp flashing too any help to get me started would be great...
January 24, 2005
1997 Ford E-350 Econoline 5.4L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1FDKE37L3V
P0303: Misfire 3 cylinder. Hello all. This headache was towed in unable to start. A quick check showed a lack of fuel problem so the first check was the fuel filter. It was clogged solid - could not blow through it at all! Replaced fuel filter and was able to get vehicle started. vehicl...
January 25, 2005
1997 Ford E-350 Econoline 5.4L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1FDKE37L3V
P0303: Misfire 3 cylinder. Hello all. This headache was towed in unable to start. A quick check showed a lack of fuel problem so the first check was the fuel filter. It was clogged solid - could not blow through it at all! Replaced fuel filter and was able to get vehicle started. vehicl...
January 26, 2005
2003 Dodge Ram 1500 Truck 4.7L MIL Lamp on VIN: 1D7HU16N13
P0303: Cylinder 3 Misfire Detected. This truck has been here three times for misfire codes. Different cylinders each time but always a code PO300. I can watch the misfire numbers climb on all cylinders if I run the engine at 1000 RPM in nuetral hot engine. I have not tried it cold. All the freez...
January 31, 2005