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P0300 Diagnostic Trouble Code Discussion for August 2014

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
1996 Dodge Ram 1500 5.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3B7HC13YXT
P0300: multiple misfire. Pulling my hair out big time... Truck runs amazing cold, but when it heats up to temp, it misses hard. I tried sticking a digital scoping camera into cyl 4 and the valves look fine. Compression check on cylinder 4(135psi) and 6(145psi) are close. Im not sure w...
August 02, 2014
2007 GMC Sierra 1500 Classic SL 4.8L Misfire, MIL Lamp on VIN: 3GTEK14V67
P0300: Multiple Cylinder Misfire Detected. Hello All this one has been awful. The vehicle came in on the hook customer said it was running a little hot , oil light came on and he didn't think there was an issue. He kept driving it, check engine light started flashing a few minutes later of driving the ...
August 05, 2014
2011 Volkswagen Jetta 2.0L Poor Idle Quality, Misfire, MIL Lamp on, Lack of Power VIN: 3VW2K7AJ1B
P0300: random misfire. Car runs fine with no problems at all until problem occurs. When driving at highway speeds and attempting to accelerate there is a loss of power and EPC illuminates along with MIL. Car will maintain speed but will not accelerate and engine rpm is very high. Wh...
August 05, 2014
2008 Audi A4 Cabriolet 2.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: WAUAF48H98
car runs perfect when cold and under load. Live data short term fuel trims within spec when running good, seems to be once warmed up short term fuel trim goes all the way to lean 25. with no obvious vacuum leaks. At that point also car will begin to misfire. I...
August 06, 2014
1996 Dodge Ram 1500 5.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3B7HC13YXT
P0300: multiple misfire. Pulling my hair out big time... Truck runs amazing cold, but when it heats up to temp, it misses hard. I tried sticking a digital scoping camera into cyl 4 and the valves look fine. Compression check on cylinder 4(135psi) and 6(145psi) are close. Im not sure w...
August 06, 2014
2001 Saturn L300 3.0L Misfire VIN: 1G8JW52R61
P0300: Random Misfire Detected. Car came in with intermittent random misfire. Computer was reprogrammed in past for random misfires by dealer according to tsb. Replaced plugs, coils, and valve cover gaskets. Vacuum at idle is 20in.. Vacuum in drive with ac on is 15in.. Checked for vacuum lea...
August 06, 2014
2001 Saturn L300 3.0L Misfire VIN: 1G8JW52R61
P0300: Random Misfire Detected. Car came in with intermittent random misfire. Computer was reprogrammed in past for random misfires by dealer according to tsb. Replaced plugs, coils, and valve cover gaskets. Vacuum at idle is 20in.. Vacuum in drive with ac on is 15in.. Checked for vacuum lea...
August 07, 2014
2003 Toyota Matrix 1.8L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 2T1KR32E53
P0300: Multiple Cylinder Misfire Detected. Ok guys, beatin my head on walls here. 03 matrix with 1.8L. Had to replace an engine in it. Now it has a bad misfire at Idle that gets worse the warmer the vehicle gets. It also starts billowing out white smoke after a while. Coolant pressure test indicates no...
August 09, 2014
2001 Cadillac DeVille 4.6L No Start VIN: 1G6KD54YX1
P0300: Engine Misfire Detected. This car came in for check over after the purchase of this car. It had many codes for misfire, TCC, Secondary air pump, crank and cam codes and PCM memory. The battery died over night and I charged it up in the morning and did a compression test and injector d...
August 11, 2014
2006 Jeep Liberty Sport 3.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1J4GL48KX6
P0300: Misfire Detected. this car came in with a lack of power and and idle problem,we did a smoke test,a compression test,fuel pressure check,a crank and cam signal sync check,a coil switch cyl #1 and 2,found nothing conclusive,we then remove the fuel rail and drain and inspect the f...
August 12, 2014
2006 Mazda 6 Mazdaspeed 2.3L MIL Lamp on VIN: JM1GG12L46
P0300: Random Misfire Detected. ... intermittent P0300. We replaced the spark plugs 3K miles ago for maintenance purposes only, no drivability issues. Recently the vehicle has a check engine light and also will not start right up (usually have to crank twice to get it to start intermittently...
August 13, 2014
2011 Dodge Durango Crew 3.6L MIL Lamp on VIN: 1D4RE4GG4B
P0300: Random misshistory. ... pending code of p2098(downstream fuel trim 2 lean). Pending p2098 went to "active" after a few min of idling. Cleared codes with initially only p2098 coming back. While monitoring FT's, LT & ST both banks no more t...
August 14, 2014
2002 Saab 9-3 SE 2.0L Misfire, MIL Lamp on VIN: YS3DF78K02
P0300: random cylinder misfire. car belongs to my wife, MIL comes and goes with this random cyl misfire code. car runs good, never noticed a miss in it
August 14, 2014
2002 Saab 9-3 SE 2.0L Misfire, MIL Lamp on VIN: YS3DF78K02
P0300: random cylinder misfire. car belongs to my wife, MIL comes and goes with this random cyl misfire code. car runs good, never noticed a miss in it
August 15, 2014
2006 Toyota Highlander Hybrid Limited 3.3L MIL Lamp on VIN: JTEDW21A76
P0300: Multiple Cylinder Misfire Detected. Hello Everyone, I have this highland hybrid with a multiple misfire code. Put it in service mode with engine running and engine is not misfiring. It appears to be a intermittent problem. Look at fuel trim short and long around -5 and doesn't appear to have an...
August 15, 2014
2007 GMC Sierra 1500 Classic SL 4.8L Misfire, MIL Lamp on VIN: 3GTEK14V67
P0300: Multiple Cylinder Misfire Detected. Hello All this one has been awful. The vehicle came in on the hook customer said it was running a little hot , oil light came on and he didn't think there was an issue. He kept driving it, check engine light started flashing a few minutes later of driving the ...
August 18, 2014
2005 Mazda 3 S 2.3L Misfire, MIL Lamp on, Pings VIN: JM1BK32355
P0300: Random Misfire Detected. ... and misfiring on cruise. EGR valve is new and ports are clear. Cam timing was off so we corrected that. Still pinging. Pulled intake and checked /replaced pcv and hose. No change. Checked crank sensor adjustment and scoped waveform with nothing unusual see...
August 18, 2014
2007 Toyota Tundra SR5 4.7L No Start VIN: 5TFRT54107
P0300: Multiple Cylinder Misfire Detected. ... diagnostics found p0300,p0302,p0303. Plugs were replaced and coils on 2&3, still have condition, sometimes the Service Engine Soon light will flash, sometimes there will be no codes and sometimes there will be codes. Ran and mo...
August 18, 2014
2009 BMW X6 xDrive50i 4.4L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 5UXFG83519
P0300: Random misfire detected. ... codes p0300-p0301-p0303-p0304-p0305-p0307 Hesitation and Poor Idle Quality we R/R updated injectors updated coils spark plugs fuel pressure sensor pcm software update after the road test the same misfire code came back we CK the both catalytic converter te...
August 19, 2014
2005 Mazda 3 S 2.3L Misfire, MIL Lamp on, Pings VIN: JM1BK32355
P0300: Random Misfire Detected. ... and misfiring on cruise. EGR valve is new and ports are clear. Cam timing was off so we corrected that. Still pinging. Pulled intake and checked /replaced pcv and hose. No change. Checked crank sensor adjustment and scoped waveform with nothing unusual see...
August 19, 2014
2004 Nissan Quest SL 3.5L Poor Idle Quality, Misfire VIN: 5N1BV28U54
P0300: Multiple Misfire Detected. ... P0300, P0306. Did power balance to the best of my ability (can't reach cylinders 1 or 3 under intake manifold). Cylinder 6 was definitely dead. Swapped coils, plugs, injectors out of cylinder 6 and there was no change. Physically checked spark on that coil...
August 20, 2014
2001 GMC Sierra 1500 SL 4.3L Misfire, MIL Lamp on VIN: 1GTEC14W11
P0300: Multiple Cylinder Misfire Detected. hi every body, I have this gmc truck coming from other shop, they replaced all the parts mentioned before, misfire on cylinders 1 & 4 still present, checked compression on all cylinders, there are 145 psi on each, also run a leak down test, all cylinders a...
August 22, 2014
2010 Dodge Grand Caravan SXT 4.0L Misfire, MIL Lamp on VIN: 2D4RN6DX8A
P0300: . We have a misfire in cylinder #5 at idle up to approximately 1100-1300 rpm and then it is totally gone. Cold startup I can see a random misfire in #6 cylinder but goes away after engine is hot. Only other symptom is at approximately 50 mph can feel a shudder/m...
August 23, 2014
2004 Mercedes-Benz SL600 5.5L Misfire, MIL Lamp on VIN: WDBSK76F14
P0300: right bank. Need some assistance form the Mercedes techs out there. This sl came in with random no start found bad crank sensor so we replaced crank sensor and upsold a tune up by age (unrelated to problem). After tune up car runs well and does not die but sets misfire co...
August 26, 2014
2005 Honda Odyssey Touring 3.5L Misfire VIN: 5FNRL38825
P0300: Random Misfire Detected. Just completed a timing belt, w/p, crank seal & cam seals. Upon first start up the vehicle is misfiring and the check engine light is flashing. Immediately figured the timing is off, no that's not it 100% certain just tore it all back done to confirm that ...
August 27, 2014