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P0300 Diagnostic Trouble Code Discussion for September 2014

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2007 Chevrolet Cobalt SS 2.0L Poor Idle Quality, Hesitation, Surge, Misfire VIN: 1G1AP18P07
P0300: Multiple Engine Misfire Detected. Car came from another shop who replaced spark plugs and air filter. All appears to be done correctly check mass air flow sensor found sings of water intrusion replaced although looked ok in data. Coolant temp ok. compression 160 in all holes. The 02 switches b...
September 02, 2014
1996 Chevrolet K1500 Cheyenne 5.7L Excessive Emissions, Poor Idle Quality, Misfire VIN: 2GCEK19R9T
P0300: Multiple Cylinder Misfire Detected. sorry for the long post everyone, but i want all my info out there. truck came to me late last week sputtering, popping thru exhaust. found broken distributor cap hold down, replaced and timed distributor. cam retard pid is at 0 degrees. that has been double c...
September 03, 2014
2007 Ford Edge SEL 3.5L Misfire VIN: 2FMDK49C67
Vehicle is shorting coils suspect bad coil driver in PCM is there a good place to buy reman or have repairs done, lots of places on the web but have never used any of them. just seeing if any one has a recommendation over new OE Thanks for the info David
September 05, 2014
2006 Pontiac G6 GT 3.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G2ZH558X6
P0300: Multiple Engine Misfire Detected. This has a slightly rough idle. But at 1200 rpm #2 cylinder misfires with out a load on it. Put it in gear, bring the rpms up and it has no misfire. Anyone have any ideas?
September 05, 2014
2002 Volkswagen Passat GLX 2.8L Poor Idle Quality, Misfire VIN: WVWRH63B72
P0300: Random missfire. Hello everyone I have a 2002 VW Passat, 2.8 V6 ATQ engine. Odd Issue, I am a VW veteran and this one has me stumped. Vehicle has new bank 1 and 2 cam adjusters, timing is dead on, used cam bar and lock pin to time engine along with the proper procedure. at Idl...
September 11, 2014
2007 GMC Envoy SLE 4.2L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GKDS13S27
P0300: Multiple Engine Misfire Detected. Yesterday scanned, had a p0300 looked at misfire data using otc geneysis evo. Cyl. 4 & 5. Pulled both coils to watch spark #5 appeared weak yellow arc. When i replaced plugs all appeared darker than normal and #5 was fouled. The plugs were not that old gap...
September 12, 2014
2002 Suzuki Vitara JLX 2.0L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 2S3TD52V62
P0300: Multiple Cylinder Misfire Detected. Hello IATN folks. This Suzuki originally came in with the a camshaft sensor code stored but no driveability issues. We cleared the code and let the customer go. The customer returned and asked to replace the camshaft sensor but no code was set and the vehicle ...
September 12, 2014
2007 GMC Envoy SLE 4.2L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GKDS13S27
P0300: Multiple Engine Misfire Detected. Yesterday scanned, had a p0300 looked at misfire data using otc geneysis evo. Cyl. 4 & 5. Pulled both coils to watch spark #5 appeared weak yellow arc. When i replaced plugs all appeared darker than normal and #5 was fouled. The plugs were not that old gap...
September 15, 2014
2007 Jeep Grand Cherokee Laredo 3.7L Misfire VIN: 1J8GR48KX7
P0300: Multiple Misfire Detected. Vehicle came in form another shop for random misfire. I could not ever get it misfire when hot so customer left and I drove the vehicle home. The next morning it started up fine, I backed out of the driveway, (about 10 seconds) and it started misfiring really ...
September 16, 2014
2007 Audi Q7 3.6L Poor Idle Quality, Misfire, MIL Lamp on
P0300: Random misfire. Hi there guys, writing this one up before i go home. This 07 Audi Q7 came in after the above mentioned repairs already performed but according to the customer everything is as it was. Same DTC's & driveability concerns. I went as far as doing a visual insp...
September 17, 2014
2006 Chevrolet Express 3500 4.8L Misfire VIN: 1GBHG31V56
P0300: Multiple Cylinder Misfire Detected. miss fire all times, mostly on cylinders 1,6,7 some times 8... on idle or accel all times, checked compression, leak down, back pressure, spark, injecters pulse, noid lights test, all normal or good, smoked intake for leaks none found, fuel trim...LT #1 25% LT...
September 20, 2014
2006 Chevrolet Express 3500 4.8L Misfire VIN: 1GBHG31V56
P0300: Multiple Cylinder Misfire Detected. miss fire all times, mostly on cylinders 1,6,7 some times 8... on idle or accel all times, checked compression, leak down, back pressure, spark, injecters pulse, noid lights test, all normal or good, smoked intake for leaks none found, fuel trim...LT #1 25% LT...
September 22, 2014
2010 Chevrolet Express 2500 4.8L Misfire, MIL Lamp on VIN: 1GCZGFBA0A
P0300: misfire detected. even pulled valve cover to check valve springs - did cyl leak down - only 10% leak on #1 . did see tsb for valve cover. but blocked vacuum to it still had miss. did cylinder balance test - #1 did not change. used tech 2 to perform injector balance test also. a...
September 23, 2014
2001 GMC Yukon XL 1500 Denali 6.0L Misfire VIN: 1GKFK66U01
P0300: Multiple Cylinder Misfire Detected. Thanks in advance for any help on this vehicle, it came to us from an other shop, it missfires on cylinders #2 and #7 at idle on misfire data .when take off idle still show miss but not as much as does it on idle.when power brake the engine show no misfire.onc...
September 23, 2014
2001 GMC Yukon XL 1500 Denali 6.0L Misfire VIN: 1GKFK66U01
P0300: Multiple Cylinder Misfire Detected. Thanks in advance for any help on this vehicle, it came to us from an other shop, it missfires on cylinders #2 and #7 at idle on misfire data .when take off idle still show miss but not as much as does it on idle.when power brake the engine show no misfire.onc...
September 24, 2014
2004 Mazda RX-8 1.3L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: JM1FE17N64
P0300: Random Misfire Detected. ... of town. He said he just lost power all of a sudden. We saw there was a random misfire. Checked all the spark and they all have good spark. Did some research on p0661 code but still not sure what the fix is. I wish I kn...
September 26, 2014
2001 Nissan Frontier SE 3.3L Misfire VIN: 1N6ED27Y41
P0300: Multiple Misfire Detected. has brand new ignition wires spark plugs distributor cap rotor fuel pressure is good o2 sensors are good No vacuum leaks
September 26, 2014
1997 Pontiac Grand Am GT 3.1L Misfire, rich VIN: 1G2NW52M8V
P0300: Multiple Cylinder Misfire Detected. Now I have it together and has consistent mis on 4 and 5 mostly 5. LT -16, if I create a vac leak it will go full lean. Fuel injectors will hold 40 psi when isolated away from system. Have a known good injector anyway on #5. MAF was reading low and sluggish...
September 27, 2014