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P0300 Diagnostic Trouble Code Discussion for November 2014

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
1999 Pontiac Grand Prix GT 3.8L Misfire, MIL Lamp on VIN: 1G2WP52K2X
P0300: Multiple Engine Misfire Detected. This car misfires on cyl's 2 & 5 (comes & goes) that starts @ 52mph or higher under steady throttle, I can watch the misfires on my scanner as well as feel it. It never misfires any other time. Previous shop replaced spark plugs, wires, coil (2 & 5...
November 03, 2014
1999 Pontiac Grand Prix GT 3.8L Misfire, MIL Lamp on VIN: 1G2WP52K2X
P0300: Multiple Engine Misfire Detected. This car misfires on cyl's 2 & 5 (comes & goes) that starts @ 52mph or higher under steady throttle, I can watch the misfires on my scanner as well as feel it. It never misfires any other time. Previous shop replaced spark plugs, wires, coil (2 & 5...
November 04, 2014
2004 Volkswagen Passat GLS 1.8L Poor Idle Quality, Hesitation, Misfire VIN: WVWVD63B24
P0300: Random Misfire. Dealer brings car to me because "You all can fix anything" I said sure I will look at it and it won't be cheap. He wants it repaired to sell it. So Heres what we pinned down, Cylinder compression is good Leakdown is 95% or better Sealing. SO no mecha...
November 06, 2014
2008 Porsche Cayenne 3.6L Misfire VIN: WP1AA29P58
P0300: Misfire cylinder 6. Hello Porsche Techs, This vehicle was towed in and the customer stated the vehicle smelled like gas and the engine was running rough and the Check Engine light was flashing so she had it towed. We found that the spark plugs were worn out we changed the spark p...
November 07, 2014
2003 Chevrolet Suburban 1500 LS 5.3L Misfire, MIL Lamp on VIN: 3GNFK16Z23
P0300: Multiple Cylinder Misfire Detected. Misfire under heavy throttle / engine load. This truck does a lot of towing (enclosed car trailer 6500lbs). If I am towing I will get a flashing check engine light on acceleration over about 3000rpm. Upon upshift or backing off on the throttle lamps goes out a...
November 08, 2014
2005 GMC Sierra 1500 SLE 4.8L Misfire VIN: 1GTEK19V45
P0300: Multiple Cylinder Misfire Detected. Truck came in missing with code p0300, Cylinder #6 miss at idle. Swapped coil,plug and plug wire with #2 still miss on #6. Performed fuel balance test and all ok. Have -31 on bank 2 short term fuel trim and -12 long term. compression tested ok around 140-160,c...
November 09, 2014
2008 Dodge Ram 2500 ST 5.7L Hesitation, Misfire, MIL Lamp on VIN: 3D7KS28D08
P0300: Multiple Cylinder Misfire. ... illuminated. Code P0300 stored. We noticed a tip in hesitation from a dead stop. A very slight Misfire on cylinders 1, 3, 5, and 7 was picked up in the scan tool. Bank 1 upstream O2 sensor was previously replaced because of a P0132, as well as all 16 spark...
November 12, 2014
2002 Volkswagen Passat GLS 1.8L Misfire VIN: WVWPD63B82
P0300: misfire. This volkswagen (Peoples car) misfire's cold when the air pump is on. when air pump goes off, misfire goes away and don't come back, if the pump comes back on the missfire comesback like clockwork. so it is related to the air pump somehow. no other codes in it...
November 12, 2014
2008 Dodge Ram 2500 ST 5.7L Hesitation, Misfire, MIL Lamp on VIN: 3D7KS28D08
P0300: Multiple Cylinder Misfire. ... illuminated. Code P0300 stored. We noticed a tip in hesitation from a dead stop. A very slight Misfire on cylinders 1, 3, 5, and 7 was picked up in the scan tool. Bank 1 upstream O2 sensor was previously replaced because of a P0132, as well as all 16 spark...
November 13, 2014
2003 Saab 9-3 Arc 2.0L Hesitation, Surge, Cuts out VIN: YS3FD49Y73
P0300: Very intermitent code. Random cyl. ... over a few days shows water loss. (very evident but never saw where) None on ground, none visible out pipe. *shrugs* Customer opted for a good used engine. Once installed, starts, idles and revs perfect. No codes. Test drive has 'jerky' acceleration, c...
November 14, 2014
2006 Hummer H3 3.5L Surge, Misfire, MIL Lamp on VIN: 5GTDN13696
P0300: Engine Misfire Detected. Replaced coils and plugs on customer request, still has multiple misfires on all cylinders. Seems to be more apparent when cold, still misfires but not as bad after warming up. Misfires are high on cylinder 4 with cylinders 1 and 5 not as high, misfires on 2 a...
November 18, 2014
2008 Honda Accord LX 2.4L Misfire, MIL Lamp on VIN: JHMCP26488
P0300: multiple cyl misfire. ... p0339, p0300, p0302, p0303. We cleared the codes and missfire went away. We replaced the crank sensor with a honda brand and customer picked up. 1 week later car returns with same codes ...
November 21, 2014
2004 Infiniti G35 3.5L Cuts out, Misfire, MIL Lamp on VIN: JNKCV54E24
P0300: Multiple Misfire Detected. Thank you all in advance for taking the time to read this. Normally i would have done more testing before asking for help but this car came from a local used car dealer who has changed just about every replacement part available already. Car runs fine until it...
November 22, 2014