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P0300 Diagnostic Trouble Code Discussion for December 2014

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2003 Cadillac Seville STS 4.6L MIL Lamp on VIN: 1G6KY54963
P0300: Engine Misfire Detected. ... Car sets P0300 after a few minutes of driving. When I watch the misfire counters all cylinders clock misfires between 1800 and 3000 RPM's. The engine is not misfiring but the counters are counting up on all cylinders. The PCM has been replaced and has the ...
December 01, 2014
2005 Saab 9-5 Arc 2.3L Poor Idle Quality VIN: YS3ED59A55
P0300: random misfire. We have a 05 Saab that came in for an oil leak and was coming from the head gasket. The head was pulled with intake still attached and new gasket was installed. While pulling head noticed that previous person glued the pcv pipe back together and blocked it. th...
December 01, 2014
2003 Cadillac Seville STS 4.6L MIL Lamp on VIN: 1G6KY54963
P0300: Engine Misfire Detected. ... Car sets P0300 after a few minutes of driving. When I watch the misfire counters all cylinders clock misfires between 1800 and 3000 RPM's. The engine is not misfiring but the counters are counting up on all cylinders. The PCM has been replaced and has the ...
December 02, 2014
2000 Honda Accord EX 3.0L Misfire, lack of power VIN: 1HGCG1658Y
P0300: Multiple Misfire Detected. ... with this accord. the car came in after six months of changing the cylinder heads. customer complains of lack of power and misfire.it makes a popping noise from behind timing cover. when I took the cover off I can see that the belt jumps when it makes the ...
December 03, 2014
2007 Chevrolet Express 1500 4.3L Excessive Emissions, Poor Idle Quality, Cuts out, Stall, Misfire, MIL Lamp on, Hard to start VIN: 1GCFG15X97
P0300: Multiple Cylinder Misfire Detected. Vehicle long crank and hard to start. Will start with gas pedal depressed. When running cylinders 5 & 6 misfiring on tech 2 graphic. Let go of pedal will stall. Inj/balace tests and pressure tests show fuel system ok and no bleed down. Has spark from coil-...
December 04, 2014
2002 Mazda Protege5 2.0L Cuts out, Misfire VIN: JM1BJ24632
P0300: Multiple Misfire Detected. Hello all. Thank you in advance for any helpful hints. This Protege will drop signal to the 2/3 ignition coil around 2700-2800 rpm. Sometimes it is only one trigger event that drops, sometimes it will not fire the coil until you get out of the rpm range. Above...
December 04, 2014
2011 Chevrolet Silverado 2500 HD LT 6.0L MIL Lamp on VIN: 1GC1KXEG7B
P0300: random misfire detected. ... Stabilitrak light coming on and flashing intermittently. I have noted that when the live misfire data is observed that during steady throttle position the data will indicate massive amounts of misfires especially on cylinder five, however misfires are scat...
December 05, 2014
2008 Mini Cooper S 1.6L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: WMWMF73598
Hi everyone, After extensive research I decided to lay the intake back and look at the the valves. all intake valves look very good no crazy build up. (Note this mini driven very little and not very far.) Inspected the timing chain no signs of damage. engine h...
December 09, 2014
2011 Chevrolet Silverado 2500 HD LT 6.0L MIL Lamp on VIN: 1GC1KXEG7B
P0300: random misfire detected. ... Stabilitrak light coming on and flashing intermittently. I have noted that when the live misfire data is observed that during steady throttle position the data will indicate massive amounts of misfires especially on cylinder five, however misfires are scat...
December 12, 2014
2011 Mini Cooper Countryman S ALL4 1.6L Misfire VIN: WMWZC5C59B
P0300: random misfire. The clutch was replaced by customer now have misfire. Will misfire hard under load for about 5 seconds then go into limp mode with limited power. Can cycle the key and it will do it again. Have looked over all work do not see anything damaged or not hooked up ...
December 16, 2014
2002 Buick Park Avenue 3.8L Misfire VIN: 1G4CW54K92
P0300: Multiple Engine Misfire Detected. ... flashing. Scan and found (p0300) set for random misfired. I pull the spark plugs off, gap is out off spec, and corroded really bad. I replace with new oem iridium plugs and premium ignition wire set. Check engine comes back with same code but not flashing ...
December 18, 2014
2002 Mercury Mountaineer 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 4M2ZU86W32
P0300: random mifsire. Customer came n and said he had scanned it at a parts store and said it needed plugs on 1, 3, and 5. And only wanted to put those in, said he was saleing the suv. So we put those n and it ran okay, he left and came back about 300 miles later and said the lite ...
December 18, 2014
1940 DeSoto red sleigh .0L Surge, Cuts out, MIL Lamp on
P0300: random missfire smell of raw methane present during surge. Fellow Mechanics I'm needing you help again. it's my job to test drive the old mans sleigh prior to the 24th. but with all the bs with korea and son's of anarchy episodes I fell Behind and man is he pissed at me. anyhow @ 200 ft with the sleigh loaded it start...
December 24, 2014
2009 Jaguar XF Supercharged 4.2L Misfire VIN: SAJWA07C09
P0300: Random Multiple Misfire. ... time trying to figure out where to go with this misfire, hoping to get some insight. THE BEGINNING: The car came in originally with very loud rod knock. Oil was very sparkly with metallic bits. We replaced the engine with a Jaguar factory reman unit, flu...
December 29, 2014
2007 Nissan Pathfinder SE 4.0L Misfire VIN: 5N1AR18U47
P0300: Multiple Misfire Detected. to all Nissan tech. this one misfires on cylinders 1-3-5 only codes I get is po300-po153. have replaced all o2s cats coils plugs injectors. only misfire on all 3 at the same time for about 15-20 seconds then all good again. I have taken it to Nissan to get a s...
December 29, 2014
2009 Chevrolet Impala LTZ 3.9L Stall, Misfire, MIL Lamp on VIN: 2G1WU57M89
P0300: Random misfire. This car is very hard to start, must hold accelerator to floor to get it started. Once started it will not idle, will only continue to run if you work the accelerator. Scanner shows misfires on 4 cylinders, two being much worse. Cannot get accurate scanner rea...
December 31, 2014