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P0303 Diagnostic Trouble Code Discussion for April 2011

Cylinder 3 Misfire Detected


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Trouble Ticket Help Requests for DTC P0303
Help Request Posted
2001 Nissan Sentra GXE 1.8L Misfire VIN: 3N1CB51D71
P0303: Cylinder 3 Misfire Detected. Missfire on no.3 cylinder only, before we had # 2 & 3 with no spark.Replace the computer & proggrammed at the dealer,now we have only # 3 no spark , i have 1.66 volts from the ecm to the coil power transistor circuit, the rest are 3.68 volts. Any sugge...
April 01, 2011
2005 Ford Expedition XLS 5.4L Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1FMFU16525
P0303: cyl3 misfire. swapped coils plugs and injectors to another cylinder check compression 155 psi swap out coils with new check valave timing sensor clean mass airflow check all wiring to coils pcm and injectors
April 02, 2011
2002 Honda Accord EX 2.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: JHMCG65822
P0303: Cylinder 3 Misfire Detected. first thanks to all for the help. i have my dads 02 honda accord 4cyl 5spd. About 3000 miles ago it started skipping so i plulled the plugs and they were worn out. OE cap and rotor and wires as well 155k 0n them. so ii replaced cap rotor wires plugs. After doi...
April 03, 2011
1997 BMW 318i 1.9L MIL Lamp on VIN: WBACC9328V
P0303: Cylinder 3 misfire. ... this car for the past 2 years I will give a quick summary I have put in 4 after market cats every time the check engine light would come on the only code stored was the P0420 and all the cats would break apart. I replaced the thermostat and did plugs and w...
April 04, 2011
2006 Ford Explorer XLT 4.0L MIL Lamp on VIN: 1FMEU63E36
P0303: Cylinder 3 Misfire Detected. This vehicle keeps returning with the above codes. Customer states that vehicle has always ran great and the light just comes on and stays on (does not flash). I have road tested the vehicle numerous times each time it has been in here and it has always ran gr...
April 05, 2011
2006 Ford Explorer XLT 4.0L MIL Lamp on VIN: 1FMEU63E36
P0303: Cylinder 3 Misfire Detected. This vehicle keeps returning with the above codes. Customer states that vehicle has always ran great and the light just comes on and stays on (does not flash). I have road tested the vehicle numerous times each time it has been in here and it has always ran gr...
April 06, 2011
2003 Volkswagen Passat GLS 1.8L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: WVWPD63B63
P0303: misfire 3 cyl. Car came in misfiring and barely running at idle. Car runs just great soon as you drive it or even if u bring revs off idle. Replaced plugs and then checked later and were fouled after not much running time at idle. LTFT 10% STFT 25% after a short 10 min drive...
April 07, 2011
2001 Ford F-250 Super Duty XLT 5.4L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTNX21L01
P0303: Fault Cylinder 3 Misfire Detected. This vehicle was brought in running extremely bad.I found cyl.3 plug loose and the ground electrode burnt off,cyl.1 looks good except the ceramic on the firing electrode is rust red as are all the other plugs that I have so far removed.I've got a feeling there...
April 11, 2011
2001 Ford F-250 Super Duty XLT 5.4L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTNX21L01
P0303: Fault Cylinder 3 Misfire Detected. This vehicle was brought in running extremely bad.I found cyl.3 plug loose and the ground electrode burnt off,cyl.1 looks good except the ceramic on the firing electrode is rust red as are all the other plugs that I have so far removed.I've got a feeling there...
April 12, 2011
2001 Land Rover Discovery Series II SE 4.0L Poor Idle Quality, Hesitation, Misfire VIN: SALTW15401
P0303: misfire cyl 3. ... CRAZY!! I have this 01 discovery II in the shop, it originally came in for a misfire. No CEL on, but when i check for codes with modis, found 13 DTC's stored in PCM. Did bulb check, and found the used car dealer this guy bought the car from removed the CEL...
April 13, 2011
2008 Mazda 3 i 2.0L Misfire, MIL Lamp on VIN: JM1BK32F58
P0303: Misfire cylinder 3. ... to us in several boxes with a bad back story. The body shop repaired it and didn't reattach a coolant hose properly which blew off when the owner was driving it. The owner then drove it until it stopped running. Another shop took it apart and sent the head...
April 15, 2011
1996 Hyundai Elantra GL 1.8L Misfire VIN: KMHJW24M8T
P0303: Cylinder 3 Misfire Detected. We pulled fuel filter and fuel was dirty appear to have rust I suspected filter was clogged and took it apart to find very little debris to my surprise.Not sure what is going on.Injectors were reman. any suggestion would be appreciated!
April 19, 2011
2001 Volvo S40 1.9L Poor Idle Quality, Misfire VIN: YV1VS29561
P0303: Cyl 3 Misfire. Im a Chrysler tech, but this is my fiance's car so Im trying to get this fixed on my own. It had a cyl #3 misfire code along with an upstream slow response. The crank sensor was cracked so I replaced it, and also did a standard tune up and replaced #3 ign coil...
April 19, 2011
2003 GMC Sonoma SLS 4.3L Poor Idle Quality, Misfire VIN: 1GTDT19X43
P0303: Cylinder 3 Misfire Detected. truck came in for emissions readiness test not complete cat and evap won't set. car has a slightly rough idle and under load mil flashes dtd po303. new plugs were put in and another garage had told them the cats where blocked.. we put on two new cats. same res...
April 20, 2011
2002 Subaru Impreza WRX 2.0L Misfire VIN: JF1GD29692
P0303: Cylinder 3 Misfire Detected. We got the car in misfiring on cyl. 2-3 changed plugs,wires,coils...car was in a front end collision.. We got it from the bodyshop...running out of answers... Help!!!
April 21, 2011
2004 Land Rover Freelander HSE 2.5L MIL Lamp on, loss of power VIN: SALNE22254
P0303: misfire cylinder 3. hello there, fellow techs!!! what i have here is a 04 freelander 2.5L from hell... need some advise on what i should do to further get this vehicle repaired!!! to begin, customer had brought this car into my shop due to lost of coolant. found coolant in crankc...
April 23, 2011
2006 Ford F-250 Super Duty XL 5.4L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1FTSX21506
P0303: Fault Cylinder 3 Misfire Detected. This vehicle came in running rough with these codes.Figured few coils would fix 3&4. Thought had ticking noise on #1 bank. Pulled valve cover looking for broken valve spring and all is good with good compression. Truck misses instantly on start up, pops cy...
April 25, 2011
2001 Mazda Tribute ES 3.0L Misfire
P0303: Cylinder 3 Misfire Detected. misfire in idle, catalyst monitor and evap monitar never complete. To pass emissions all but one monitors needed to be completed. Reset the computer by grounding battery. Bank 1 runs rich and Long fuel trim stays from -2o% to -25%
April 28, 2011
2003 Honda Accord LX 2.4L Misfire, MIL Lamp on VIN: 3HGCM56303
P0303: Cylinder 3 Misfire Detected. Dead miss on #1. Replaced plug, no change. Coil fires to ground. Swapped #1, #2 coils, miss did not follow coil. Compression 175 on #1 and #2. Observed piston movement #1. Noid light flashes for #1. Removed fuel rail and cranked engine, all injectors spray equ...
April 29, 2011
2004 Isuzu Rodeo S 3.5L Misfire VIN: 1S2DM58Y14
P0303: Cylinder 3 Misfire Detected. Vehicle came in with #3 misfire. Diagnosed as bad #3 injector. Replaced inj. and it ran fine for about [...]. Came back with #4 misfire, also diagnosed as bad injector. On test drive after replace #4 inj. #5 started missing. Low line fuel pressure seems to be ...
April 29, 2011