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P0303 Diagnostic Trouble Code Discussion for November 2008

Cylinder 3 Misfire Detected


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Trouble Ticket Help Requests for DTC P0303
Help Request Posted
2001 Acura MDX Touring 3.5L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on, Barely runs, not dri VIN: 2HNYD18861
P0303: Cylinder 3 Misfire Detected. Hello Honda and Acura Gurus! boy do I need your help on this one. This truck has been rode hard and put up wet! What have I gotten myself into this time! What it boils down to is that this truck is running extremely rich, loading up with fuel. So rich it alrea...
November 03, 2008
2002 BMW 540i 4.4L Stall, MIL Lamp on VIN: WBADN6342G
P0303: 3 misfire. bmw tech, please help. we recently did a trans service. car came back with service enine light on. customer complaint about car shaking yesterday, but we cannot duplicate any problem at this time. 5dtcs in engine contorl system. pull out coil-no oil contanimed...
November 03, 2008
2001 Acura MDX Touring 3.5L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on, Barely runs, not dri VIN: 2HNYD18861
P0303: Cylinder 3 Misfire Detected. Hello Honda and Acura Gurus! boy do I need your help on this one. This truck has been rode hard and put up wet! What have I gotten myself into this time! What it boils down to is that this truck is running extremely rich, loading up with fuel. So rich it alrea...
November 04, 2008
1998 Toyota Avalon XL 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, MIL Lamp on
P0303: Cylinder 3 Misfire Detected. hi all, car came in with codes for random misfires and on 1,3,5, cyls. also lean bank 1. it has a/f sensors.the plugs on bank 1 were fouled,rich, bank 2 plugs ok. replaced maf with new oe sensor,and plugs on bank 1 . hard reset computer. test drove good. custo...
November 04, 2008
2004 Chevrolet Astro 4.3L Poor Idle Quality, Misfire VIN: 1GNDM19XX4
P0303: cyl 3 misfire. Intermittant severe misfire only on cyl 3, will not happen when engine is cold, misfire gone above 900RPM as indicated by misfire counter. Spark plug, wire, cap and rotor all known good. KOEO fuel pressure within spec, spray pattern of injector 3 ok. Engine co...
November 05, 2008
1999 Honda Prelude 2.2L Misfire, MIL Lamp on VIN: JHMBB6144X
P0303: Cylinder 3 Misfire Detected. here's a nice one. have this car which another shop gave up on. has a DEAD miss only when hot cyl #1. here's what i've done so far. plugs (o.e.m.), wires, checked but not replaced distributor (common for shaft wearing) different cap - ruled out spark. pressure...
November 05, 2008
2001 Lexus RX300 3.0L Misfire VIN: JTJHF10U31
P0303: cylinder 3 miss-fire. ... engine miss-fires p0300 303,304,305 and vsc light is on. a slight skip can be felt under load. checked all grounds around intake plenum. spark plugs are correct p/n and appear to be fairly new. cleared codes. only codes that return under load are p0300, 30...
November 05, 2008
1998 Toyota Avalon XL 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, MIL Lamp on
P0303: Cylinder 3 Misfire Detected. hi all, car came in with codes for random misfires and on 1,3,5, cyls. also lean bank 1. it has a/f sensors.the plugs on bank 1 were fouled,rich, bank 2 plugs ok. replaced maf with new oe sensor,and plugs on bank 1 . hard reset computer. test drove good. custo...
November 05, 2008
1998 Subaru Forester S 2.5L Misfire VIN: JF1SF6557W
P0303: Cylinder 3 Misfire Detected. HELPPPPPPPPPPPPP!! We work on a lot of subys here, drive on myself, and this one has me baffled. I did head gaskets at 136000 miles, had heads rebuilt, and the machine shop did the guides and replaced the exhaust valves. Car has run fine for about 18000 miles,...
November 07, 2008
2000 Dodge Intrepid 2.7L MIL Lamp on VIN: 2B3HD46R4Y
P0303: Cylinder 3 Misfire Detected. Could use some advise on this one. Check Engine light comes back on after 100 miles.
November 08, 2008
1998 Dodge Dakota 3.9L MIL Lamp on VIN: 1B7FL26X0W
P0303: Cylinder 3 Misfire Detected. Vehicle came back with mil light on and above codes, removed left cylinderhead ran solvent in ports solvent dripped out slowly out exhaust ports, ok fine ordered new replacement head from chrysler solvent tested ok prior to install, put together vehicle is now...
November 12, 2008
2002 Dodge Ram 1500 Truck 4.7L Misfire, MIL Lamp on VIN: 3D7HU18N22
P0303: Cylinder 3 Misfire Detected. Has light engine miss all the time, recent new plugs, TPS, has good compression, pulse,spark,fuel pressure, I can manually fire each inj and get the same psi drop, I have cleaned the injectors with the Wynn's system, swapped plugs and coils to different cylind...
November 12, 2008
1996 Ford Explorer Sport 4.0L Misfire VIN: 1FMCU24X9T
P0303: 3 cylinder misfire. ... code P0303, #[...] misfire. we scanned vehicle. verified the code, but went to live data and 4 of the cylinder are misfiring, #4 being the worst. did tree for for #3 misfire and replaced ignition coil pack. #3 tower on old coil pack not firing. after clear...
November 12, 2008
2001 Cadillac Catera 3.0L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: W06VR54R11
P0303: Cylinder 3 Misfire Detected. once communication was restore with the trans. module after replacing the ebtcm once the car is started and running, all be it poorly the transmission mil light comes on and the computer stores a p1700.
November 13, 2008
2005 Ford F-150 FX4 5.4L Misfire VIN: 1FTPW14525
P0303: . ... check engine light on. i pulled the codes of p0301 and p0308. so i cleared the codes and drove the truck and found while driving, close to the end of the test drive. i went to floor it and the revs kicked up but the truck did not go anywhere and the check ...
November 13, 2008
1995 Lexus ES300 3.0L Misfire, MIL Lamp on VIN: JT8GK13T8S
P0303: Cylinder 3 misfire. ... running. Codes: P0303 and P0170. I first swapped coil positions to see if the misfire would follow the coil. It did not; still #3 misfire. I then looked at spark plugs and found single electrode plugs. I replaced plugs with NGK Laser Platinum twin electrod...
November 15, 2008
2003 Ford Explorer XLT 4.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FMZU73K03
P0303: miss cyl 3. hello,this vehicle has a constant rough idle #3 and #6 cylinders not working at all on cylinder balance test,no backfires,pulled intake and valve covers,thought i would find a broken valve spring all look ok,injectors working can see them visually spray while ...
November 17, 2008
2001 Acura MDX Touring 3.5L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on, Barely runs, not dri VIN: 2HNYD18861
P0303: Cylinder 3 Misfire Detected. Hello Honda and Acura Gurus! boy do I need your help on this one. This truck has been rode hard and put up wet! What have I gotten myself into this time! What it boils down to is that this truck is running extremely rich, loading up with fuel. So rich it alrea...
November 03, 2008
2002 BMW 540i 4.4L Stall, MIL Lamp on VIN: WBADN6342G
P0303: 3 misfire. bmw tech, please help. we recently did a trans service. car came back with service enine light on. customer complaint about car shaking yesterday, but we cannot duplicate any problem at this time. 5dtcs in engine contorl system. pull out coil-no oil contanimed...
November 03, 2008
2001 Acura MDX Touring 3.5L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on, Barely runs, not dri VIN: 2HNYD18861
P0303: Cylinder 3 Misfire Detected. Hello Honda and Acura Gurus! boy do I need your help on this one. This truck has been rode hard and put up wet! What have I gotten myself into this time! What it boils down to is that this truck is running extremely rich, loading up with fuel. So rich it alrea...
November 04, 2008
1998 Toyota Avalon XL 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, MIL Lamp on
P0303: Cylinder 3 Misfire Detected. hi all, car came in with codes for random misfires and on 1,3,5, cyls. also lean bank 1. it has a/f sensors.the plugs on bank 1 were fouled,rich, bank 2 plugs ok. replaced maf with new oe sensor,and plugs on bank 1 . hard reset computer. test drove good. custo...
November 04, 2008
2004 Chevrolet Astro 4.3L Poor Idle Quality, Misfire VIN: 1GNDM19XX4
P0303: cyl 3 misfire. Intermittant severe misfire only on cyl 3, will not happen when engine is cold, misfire gone above 900RPM as indicated by misfire counter. Spark plug, wire, cap and rotor all known good. KOEO fuel pressure within spec, spray pattern of injector 3 ok. Engine co...
November 05, 2008
1999 Honda Prelude 2.2L Misfire, MIL Lamp on VIN: JHMBB6144X
P0303: Cylinder 3 Misfire Detected. here's a nice one. have this car which another shop gave up on. has a DEAD miss only when hot cyl #1. here's what i've done so far. plugs (o.e.m.), wires, checked but not replaced distributor (common for shaft wearing) different cap - ruled out spark. pressure...
November 05, 2008
2001 Lexus RX300 3.0L Misfire VIN: JTJHF10U31
P0303: cylinder 3 miss-fire. ... engine miss-fires p0300 303,304,305 and vsc light is on. a slight skip can be felt under load. checked all grounds around intake plenum. spark plugs are correct p/n and appear to be fairly new. cleared codes. only codes that return under load are p0300, 30...
November 05, 2008
1998 Toyota Avalon XL 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, MIL Lamp on
P0303: Cylinder 3 Misfire Detected. hi all, car came in with codes for random misfires and on 1,3,5, cyls. also lean bank 1. it has a/f sensors.the plugs on bank 1 were fouled,rich, bank 2 plugs ok. replaced maf with new oe sensor,and plugs on bank 1 . hard reset computer. test drove good. custo...
November 05, 2008
1998 Subaru Forester S 2.5L Misfire VIN: JF1SF6557W
P0303: Cylinder 3 Misfire Detected. HELPPPPPPPPPPPPP!! We work on a lot of subys here, drive on myself, and this one has me baffled. I did head gaskets at 136000 miles, had heads rebuilt, and the machine shop did the guides and replaced the exhaust valves. Car has run fine for about 18000 miles,...
November 07, 2008
2000 Dodge Intrepid 2.7L MIL Lamp on VIN: 2B3HD46R4Y
P0303: Cylinder 3 Misfire Detected. Could use some advise on this one. Check Engine light comes back on after 100 miles.
November 08, 2008
1998 Dodge Dakota 3.9L MIL Lamp on VIN: 1B7FL26X0W
P0303: Cylinder 3 Misfire Detected. Vehicle came back with mil light on and above codes, removed left cylinderhead ran solvent in ports solvent dripped out slowly out exhaust ports, ok fine ordered new replacement head from chrysler solvent tested ok prior to install, put together vehicle is now...
November 12, 2008
2002 Dodge Ram 1500 Truck 4.7L Misfire, MIL Lamp on VIN: 3D7HU18N22
P0303: Cylinder 3 Misfire Detected. Has light engine miss all the time, recent new plugs, TPS, has good compression, pulse,spark,fuel pressure, I can manually fire each inj and get the same psi drop, I have cleaned the injectors with the Wynn's system, swapped plugs and coils to different cylind...
November 12, 2008
1996 Ford Explorer Sport 4.0L Misfire VIN: 1FMCU24X9T
P0303: 3 cylinder misfire. ... code P0303, #[...] misfire. we scanned vehicle. verified the code, but went to live data and 4 of the cylinder are misfiring, #4 being the worst. did tree for for #3 misfire and replaced ignition coil pack. #3 tower on old coil pack not firing. after clear...
November 12, 2008
2001 Cadillac Catera 3.0L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: W06VR54R11
P0303: Cylinder 3 Misfire Detected. once communication was restore with the trans. module after replacing the ebtcm once the car is started and running, all be it poorly the transmission mil light comes on and the computer stores a p1700.
November 13, 2008
2005 Ford F-150 FX4 5.4L Misfire VIN: 1FTPW14525
P0303: . ... check engine light on. i pulled the codes of p0301 and p0308. so i cleared the codes and drove the truck and found while driving, close to the end of the test drive. i went to floor it and the revs kicked up but the truck did not go anywhere and the check ...
November 13, 2008
1995 Lexus ES300 3.0L Misfire, MIL Lamp on VIN: JT8GK13T8S
P0303: Cylinder 3 misfire. ... running. Codes: P0303 and P0170. I first swapped coil positions to see if the misfire would follow the coil. It did not; still #3 misfire. I then looked at spark plugs and found single electrode plugs. I replaced plugs with NGK Laser Platinum twin electrod...
November 15, 2008
2003 Ford Explorer XLT 4.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FMZU73K03
P0303: miss cyl 3. hello,this vehicle has a constant rough idle #3 and #6 cylinders not working at all on cylinder balance test,no backfires,pulled intake and valve covers,thought i would find a broken valve spring all look ok,injectors working can see them visually spray while ...
November 17, 2008