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P0300 Diagnostic Trouble Code Discussion for June 2009

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
1997 Volkswagen Golf GTI VR6 2.8L MIL Lamp on VIN: 3VWHD81H0V
... do not want to throw parts at it; car's been back several times and its a long time customer from prior shop and owner car since new. Car spends more time in customer's garage than on road; multicar family. Reported complaint is MIL Lamp on with various co...
June 01, 2009
1997 Chevrolet Blazer 4.3L Misfire, Spark knock VIN: 1GNDT13W4V
P0300: Multiple Cylinder Misfire Detected. We have this Blazer that is missing over 55 mph. The code is random misfire and #1 and 6 show a slight misfire but it is mostly #2. The car has new plug wires, #4 was bad. The vehicle pings nearly all the time under acceleration but only misses on the highway....
June 02, 2009
2004 Cadillac SRX 3.6L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GYEE63754
P0300: Engine Misfire Detected. Hello good technicians out there. Here is the story. This Cadillac came in with a MIL on. We scanned the computer and found a P0420 code (Catalyst efficiency) as well as multiple cylinder missfires. Because of the millage we went ahead and replaced the spark p...
June 03, 2009
1999 Saab 9-5 2.3L Poor Idle Quality, MIL Lamp on VIN: YS3ED48E3X
P0300: Multiple misfires detected. ... MIL lamp on 1300 or p0300 multiple misfires. I checked plugs and shes running very rich. i checked fuel pressure and its doing something weird. It will not jump up to spec. It slowly goes up and even at its highest point is not 43psi. sometimes it stops an...
June 03, 2009
2007 Ford Focus SES 2.0L Poor Idle Quality, Misfire VIN: 1FAFP34N17
P0300: random misfire. ... engine light is on because of the misfire. if you clear the codes and run the car in park or neutral around 1500 to 1800 the engine misses like crazy and codes po300 p0301 p0302 p0303 p0304 all come back at the same time. i...
June 04, 2009
2002 Mercury Villager (Van) 3.3L Excessive Emissions, no power VIN: 4M2ZV11T12
P0300: Multiple Missfire. This vehicle was Diagnosed by another shop as needing a Catalytic converter. They took it to another shop and they cut out the secondary converter. The primary converter was plugged. Replaced but still is not right. Fuel pressure does not drop off. Checked aft...
June 04, 2009
1998 Mercury Villager (Van) LS 3.0L Cuts out, Misfire VIN: 4M222ZVVVV
P0300: random misfire. van runs bad hot under load i verified that ignition is cutting out with timing light off the coil wire,if i hook my vantage up to the trigger at the power transister[module] and i verified that i am getting a really skewed signal from the pcm and im not sure ...
June 05, 2009
2005 Nissan Sentra 1.8L MIL Lamp on VIN: 3N1CB51D25
P0300: Multiple Misfire Detected. Came in three times for a misfire code P0300 or P0303. the second time, the owner said the car started hard after sitting and we found the fuel pressure bleeding off rapidly so we replaced the pump. We can NEVER get this car to miss in the shop - usually freez...
June 08, 2009
2002 Kia Sedona EX 3.5L Hesitation, Misfire, MIL Lamp on VIN: KNDUP13192
P0300: Multiple Misfire Detected. thanks for all the help in advance, this kia has a slight miss on take off then goes like a bandit down the road.I have done all I could think off the only major thing I found wrong was the tone wheel on the crank gear had spun about a 1/4 inch from where it n...
June 09, 2009
2004 Chevrolet Express 3500 6.0L Misfire VIN: 1GBHG31U74
P0300: Multiple Cylinder Misfire Detected. Vehicle has a misfire on cylinder #2 & #6 at idle only. It trips the code mostly when cold after running for 2-3 minutes. Eventually the MIL light will come on. We have replaced plugs, wires, swapped coils with different cylinders, flushed injectors twice,...
June 10, 2009
2002 Audi A4 3.0L Misfire, MIL Lamp on VIN: WAULT68E42
P0300: p0300301 02 03 04 05 06. this well maintained car was presented to us with a mil light and idle misfire issue...not a flat out miss but definatley not running as crisp as this car does.short and long term fuel trims are basically at zero give or take a percentage point-1.5 to.75but i ...
June 12, 2009
1996 GMC K1500 Sierra SL 5.7L Misfire VIN: 2GTEK19R4T
P0300: Multiple Cylinder Misfire Detected. misfire on #5 cylinder
June 12, 2009
1999 Chevrolet S10 LS 4.3L Misfire VIN: 1GCCS19X6X
P0300: Multiple Engine Misfire Detected. ... ORIGINALLY CAME IN NO RUN CHECKED NO FUEL PRESSURE, REPLACED A FUEL PUMP, AND STARTED, RAN ROUGH MISS FIRED AND FOUND INJECTORS/REGULATER LEAKING REPLACED AND DID COMPLETE TUNE UP. STILL HAS ROUGH RUNNING AT IDLE AND SHOWS P0300 WITH MISS FIRES ON ALL CYLI...
June 15, 2009
2001 Mercedes-Benz S600 5.8L Misfire, MIL Lamp on VIN: WDBNG78J71
P0300: random multiple misfire. ... bank(7-12)dead and CE light on. Complaint of ran rough and sluggish. Scanned w/AutoBoss scanner and found misfire codes for all cyl. on left bank along w/ P0300. Checked IATN for clues and proceded to inspect for oil in wiring harn...
June 15, 2009
2003 Mazda 6 S 3.0L Hesitation, Surge, Stall, Misfire, MIL Lamp on VIN: 1MA3749370
P0300: Random Misfire Detected. thanks for all ansewers in advance. when first starting up the car is surging and sometimes stall when first started up. after about 30 seconds the car smooths out and seems ok. the car will also have a blinking check engine light when first driving even thoug...
June 16, 2009
1999 Chevrolet K1500 Suburban 5.7L Poor Idle Quality, Misfire VIN: 1GNEK13R13
P0300: Multiple Cylinder Misfire Detected. have a problem mil p0300.i checked misfire data ,cyl#4 a lot of multiple misfires.have a misfire on cyl#4 and runs rough at idle,above 1,500 rpm runs smooth and no cyl#4 misfire detected on scan tool.i had replaced the intake gasket,injector#4,cap,rotor,wires,...
June 18, 2009
1999 Saab 9-5 2.3L Poor Idle Quality, MIL Lamp on VIN: YS3ED48E3X
P0300: Multiple misfires detected. ... MIL lamp on 1300 or p0300 multiple misfires. I checked plugs and shes running very rich. i checked fuel pressure and its doing something weird. It will not jump up to spec. It slowly goes up and even at its highest point is not 43psi. sometimes it stops an...
June 18, 2009
2008 Chevrolet Express 2500 LS 6.0L Excessive Emissions, Poor Idle Quality, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on, Runs BADD VIN: 1GAGG25K18
P0300: Engine Misfire Detected. ... vehicle fairly well maintaned-driver states she fueled up on the highway-started to run poorly cel came on & traction disable message came on DIC.Vehicle has been driven hundreds of miles since the event.Not sure if this matters at all...codes p0106 &a...
June 19, 2009
2001 GMC Sierra 2500 HD SL 6.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GTHC24UX1
P0300: Multiple Cylinder Misfire Detected. ... acceleration (check engine light flashing) and setting code p0300. monitoring missfire monitors cylinders 1/6 are missfing. just performed an all a/c delco tune up (ig, plugs wires, 2 coils, fuel filter and air filter) for the 1st time in 269k miles. vehic...
June 19, 2009
2003 Porsche Boxster Roadster 2.7L Misfire VIN: WPOCA29815
P0300: misfire random. Hi, This car came in with a rough idle. Codes were for a misfire. Checked plugs, they wre worn so they were replaced. Then the coils were switched. Also the injectors were switched from that cylinder, #3. Misfire stayed at that cylinder. The engine does have a...
June 19, 2009
2003 Porsche Boxster Roadster 2.7L Misfire VIN: WPOCA29815
P0300: misfire random. Hi, This car came in with a rough idle. Codes were for a misfire. Checked plugs, they wre worn so they were replaced. Then the coils were switched. Also the injectors were switched from that cylinder, #3. Misfire stayed at that cylinder. The engine does have a...
June 22, 2009
2000 Chevrolet Prizm 1.8L Hesitation, Cuts out, Stall VIN: 1Y1SK5487Y
P0300: random mis-fire. This is a very intermittent problem, I do not believe the code is showing me the real problem, ghost code. The customer goes to start the vehicle and every so often they will have extended cranking and no fire until he steps on the gas pedal. When he backs out...
June 23, 2009
2004 Chevrolet Express 2500 LS 6.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GAGG25U84
P0300: Multiple Cylinder Misfire Detected. ... great when cold but after it idles hot, the engine starts to miss and the check engine light flashes (p0300) if you brake toqure the engine in drive the miss goes away and the check engine light stops flashing (turns off) for about a minuite then the miss ...
June 24, 2009
2006 Chevrolet Express 2500 4.8L Misfire VIN: 1GCGG25V66
P0300: Multiple Cylinder Misfire Detected. guys, I have this van in here and need some help. Can in with a dead missfire. customer replaced plugs and wires. I swapped # 5cyl coil plug and wire to rule out ignition problems. did an injector balance and had# 7 cyl with a 3 lb difference. replaced and is ...
June 24, 2009
1998 GMC Savana 2500 5.0L Misfire VIN: 1GTFG25M4W
P0300: Multiple Cylinder Misfire Detected. Came in 2 months ago with misfire complaint in a.m. Tuned engine and cleaned injectors. Customer says still doing it but now he has white smoke out tailpipe and antifreeze smell. Verify misfire codes and history shows mostly cyl 1 and 3. Pulled plugs and 1 and...
June 25, 2009
2005 Dodge Caravan SXT 3.3L Stall, Misfire, MIL Lamp on VIN: 1D4GP45R95
P0300: Multiple Cylinder Misfire Detected. This van came in with a CEL lite and a complaint of stalling and shutter on accel. Prior to this there was a crank sensor and Ignition coil and wires and plugs installed. When I test drove the vehicle it feels that the car is shut off for a second (only felt t...
June 29, 2009
2002 Kia Sedona EX 3.5L Hesitation, Misfire, MIL Lamp on VIN: KNDUP13192
P0300: Multiple Misfire Detected. thanks for all the help in advance, this kia has a slight miss on take off then goes like a bandit down the road.I have done all I could think off the only major thing I found wrong was the tone wheel on the crank gear had spun about a 1/4 inch from where it n...
June 29, 2009
2001 Mitsubishi Eclipse GS 2.4L No Start, Cuts out VIN: 4A3AC44G41
P0300: Random Misfire Detected. ... with this eclipse. towed in with a broken timing belt (interference engine) so i took the head off and sent it out. got the head back and put it all together. put new timing belt and pulleys and also the balance shaft belt. lined all marks up. at first the...
June 29, 2009
2001 Nissan Sentra GXE 1.8L Stall VIN: 3N1CB51D31
P0300: Multiple Misfire Detected. How ya'll are?? Got this here Sentra giving me fits. Comes in as no start. Retrieved codes, was slightly overwhelmed.Cranked, started, died. Grabbed my trusty Vantage and off to pin-out land I went. Verified all powers/grounds at ECM.It does start and run.Watc...
June 29, 2009
2005 Audi A4 1.8L Misfire VIN: WAULC68EX5
P0300: multi cyl misfire. Vehicle will misfire on light to hard accell, also on decell. observed fuel trims and long term stays at zerro, short term, aprox 5.5%. pinging can also be heard on hard accell, does not coincide with the misfires which occur across all 4 cylinders. can not fi...
June 30, 2009
2000 Honda CR-V SE 2.0L Misfire, MIL Lamp on VIN: JHLRD1874Y
P0300: Multiple Misfire Detected. Greetings! Hoping someone has been down this road before. Vehicle has a miss at idle - I believe it's a lean miss. Spark plugs replaced about 4 months ago and they look brand new - not a speck of carbon on them. Fuel pressure is good - both static and running....
June 30, 2009