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P0300 Diagnostic Trouble Code Discussion for December 2004

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
1999 GMC Sonoma SL 2.2L Hesitation, Cuts out VIN: 1GTCS1444X
P0300: Multiple Engine Misfire Detected. truck came in with a hesitation and MIL illuminated. checked plugs, were good old bosch platnum +2. number one took some threads out with it, so we replaced all the plugs and fixed the #1 plug hole. Put back together and still missed. found the injector for #1...
December 01, 2004
1999 GMC Sierra 1500 SL 4.8L No Start VIN: 2GTEC19V6X
P0300: Multiple Cylinder Misfire Detected. GREETINGS FROM NORTHERN ONTARIO,CANADA, PROBLEM--THIS TRUCK WILL NOT START OUTSIDE IN THE COLD. IT FLOOD (WET PLUGS) EVERY TIME NOW. PUSH IT INSIDE TO WARM UP FOR A FEW HOURS AND IT WILL START WITH A FLIP OF THE KEY, OR AFTER IT HAS BEEN RUNNING. GO BACK OUTSI...
December 01, 2004
1996 Volkswagen Jetta GLS 2.0L Misfire, MIL Lamp on VIN: 3VWSA81H7T
P0300: multipe missfire. car came in and had mil lite on with po300 and po302 misfires and misfire on #2 cylinder - checked compression on all cylinders 190-190-195-190 found spark plug wires had green corrision replaced dist cap-rotor-spark plug wires and spark plugs with new bosch p...
December 01, 2004
1997 Chevrolet Cavalier 2.2L Excessive Emissions, No Start, Hesitation, Surge, Stall, Misfire, MIL Lamp on VIN: 1G1JC5246V
P0300: Multiple Engine Misfire Detected. Hello to all and merry christmas. I have a real problem child here I will try to be short. I inhereted this vehicle from another tech in the shop. Car came in running as if the exhaust was plugged,loading up no acceleration and sometimes not starting unless ho...
December 02, 2004
1999 GMC Sonoma SL 2.2L Hesitation, Cuts out VIN: 1GTCS1444X
P0300: Multiple Engine Misfire Detected. truck came in with a hesitation and MIL illuminated. checked plugs, were good old bosch platnum +2. number one took some threads out with it, so we replaced all the plugs and fixed the #1 plug hole. Put back together and still missed. found the injector for #1...
December 02, 2004
1999 Chevrolet Astro 4.3L Misfire VIN: IGBDM19W9X
P0300: Multiple Cylinder Misfire Detected. hi guys i got problems with this van si missing at idle or on decel my scanne tool show missfire at #1 3 5 cylinder . i tes t fuel press is not droping , please i need help . thanks
December 04, 2004
2001 Volkswagen Jetta GL 2.0L Hesitation, Stall, Misfire VIN: 3VWSH29M31
P0300: random missfire. customer complained that experienced loss of power,no take off, fuel pressure ok, no check engine light on, all filters and plugs new, unplugged maf. vehicle reved out perefectly. replaced maf with genuine part, initially vehicle exhibited the same symptoms, e...
December 06, 2004
2002 GMC Sierra 1500 5.3L MIL Lamp on VIN: 1GTEK19T43
P0300: Multiple Cylinder Misfire Detected. Linked up with data link and watching data streem and noticed that the engine is missfiring on all of left bank. #1,3,5 and 7. Checked for bad ground on coils ( coil over plug system ) and also for power at coils. Eveything passed tests. Also noticed that the ...
December 07, 2004
2004 Chevrolet Aveo 1.6L Misfire, MIL Lamp on VIN: KL1TD62624
P0300: Engine Misfire Detected. Hi group, this Chevrolet Aveo have an intermittent misfire with the number 2 cylinder intermitently.The problem occur in the first kilometer, after the engine run great for the rest of the day and in some case run great for three days. The problem occurs somet...
December 08, 2004
1996 Cadillac Eldorado 4.6L Misfire VIN: 1G6EL12Y1T
P0300: Engine Misfire Detected. ... we replaced plugs & plug wires (ac plugs & wires), had p0300 at that time & misfire counter showed # 3 way up there. at 110,000 mi p0300 showed up again (misfire counter showed #3 again), plug had carbon tracking on porcelain so replaced it und...
December 09, 2004
1996 Chevrolet Blazer 4.3L Misfire, MIL Lamp on VIN: 1GNDT13W2T
P0300: Multiple Cylinder Misfire Detected. ... that I am having a tough time with. P0340 (cmp) and p0300 come up from time to time, and when driving you can see the misfires count up.So far I have scoped the cam and crank, also both together while driving, and patterns look great. I've checked the cam ...
December 09, 2004
2000 Buick LeSabre Custom 3.8L Poor Idle Quality, MIL Lamp on VIN: 1G4HP54K7Y
P0300: Engine Misfire Detected. hi techs,i am a bit stumped on this one.seemed like the normal injector problem but...car came to me with a miss,cel on-po300.seen history misfire on 4 cylinders.i had tuned up 3 mo. ago.older customer,short trips so i suspected dirty injectors.cleaned injecto...
December 10, 2004
1997 Buick Century Custom 3.1L Misfire, MIL Lamp on VIN: 2G4WS52M7V
P0300: Multiple Engine Misfire Detected. ... Dilema comes from a 1997 Buick Century with a 3.1 Liter Engine. The customer came in complaining of check engine light coming on. Scanning the computer I found code P0300-Randome\Multiple Misfire. Further inspection showed the vehicle's plugs were worn, an...
December 13, 2004
2000 Chevrolet S10 2.2L Surge, Misfire, MIL Lamp on VIN: 1GCCS1452Y
P0300: Multiple Engine Misfire Detected. ... help. I have this 2000 s10 that is giving me fits. The biggest complaint is no power. After clearing the above mentioned codes the only one that reappears is the P0300. Cylinder 1 is the only one I can see counting them up....
December 14, 2004
1997 Chevrolet K1500 5.7L Excessive Emissions, Poor Idle Quality, Surge, Misfire
P0300: Multiple Cylinder Misfire Detected. ... started suddenly. Misfire codes P0300. Major tune, Cap, Rotor, Wires, Plugs, Fuel filter. Idles fine for a few minutes then surges and stalls. Would not fire out of 4 legs on the cap before replacement. Traced disconnected ground on back of motor. Hooked g...
December 16, 2004
1996 Dodge Caravan 3.0L Cuts out, Stall VIN: 2B4FP2532T
P0300: Multiple Cylinder Misfire Detected. ... stalling problem. After driving a while, it will act as if fuel goes away and van stops running. After letting it sit for 10-15 minutes, it would re start and run fine for hours, days or weeks. It will throw a P0300 random misfire code every time. When the...
December 17, 2004
1998 Honda CR-V LX 2.0L Misfire, MIL Lamp on
P0300: Multiple Misfire Detected. Honda techs, here is one with a curve. This came in after having a timing belt and tune up done about 15000 miles ago. The first thing I did was to recheck valve clearances. I had afew tight ones and yes they were exhaust. I reset clearances and tested. The mi...
December 19, 2004
1996 Dodge Grand Caravan ES 3.8L MIL Lamp on VIN: 1B4GP54L1T
P0300: Multiple Cylinder Misfire Detected. ... MIL set on long downhill grade. Scanned, P0300- freeze frame inconclusive. Cleared DTC and test drove- could not reset P0300. Customer set MIL and returned. Used Modis and OTC- discovered we could set light on light throttle long decel. Meaning throttle ha...
December 22, 2004
1997 Chevrolet K1500 Cheyenne 5.7L Misfire, MIL Lamp on VIN: 2GCEK19R4V
P0300: Multiple Cylinder Misfire Detected. mil is triggered. code p0300 random cylinder misfire. under misfire data cylinder #5 is most prevalent misfire.off the scale at an idle.other cyliders may show 0-6 misfires.under a load in gear, once 850 rpm is reached misfire is non -existent.compression test...
December 23, 2004
2000 Chevrolet Silverado 1500 4.8L Poor Idle Quality, Misfire VIN: 2GCEC19V7Y
P0300: Multiple Cylinder Misfire Detected. Truck idles real rough on cold start up. It will flare on start to 1200 rpm, everything looks good on the scanner then o2s all go to less than 100 mv. Idle gos very rough and cyl 5 and 6 show misfire. If the ect sensor reads over 100 misfires go away and engin...
December 23, 2004
1999 Chevrolet S10 2.2L Misfire VIN: 1GCCS1443X
P0300: Multiple Engine Misfire Detected. We have been over everything on this one, it has a miss we can get consistantly under light load, app 3,000 rpm, 4th gear. It can be felt other times but is most apparent then. Counters on TechII show #1 worst. We have tested spark, one coil seemed weak-replac...
December 27, 2004
1997 Pontiac Grand Am SE 2.4L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G2NE52TXV
P0300: Multiple Cylinder Misfire Detected. ... listed codes(P0530,P1441,P0300,P0108). It is running rough and extremely rich. Pulse width is at 4.3+ during open loop and 7.2+ during closed loop. MAP is reading 2.9-3.0 volts at idle. The cooling fan runs all the time even with the engine at cool temps. ...
December 27, 2004
1997 Chevrolet Malibu 3.1L Misfire, MIL Lamp on VIN: 1G1ND52M8V
P0300: Multiple Cylinder Misfire Detected. ... MIL light on (Not Flashing) and a slight miss. Check the codes and noticed the mentioned random miss code P0300. The scanner shows a miss history on #3 cyl of around 2500 and on #1 cyl of 8. But it is not missing regular on either. Checking the plug and wi...
December 28, 2004
2000 Chevrolet Suburban 1500 LT 5.3L Misfire VIN: 3GNEC16T6Y
P0300: Multiple Cylinder Misfire Detected. ... that came in initially for the check engine light on and rough idle. Changed fuel filter (original filter) and performed an air induction and throttle body service. Have not pressure flushed injectors yet. Came back in yesterday, she said it runs rough on ...
December 29, 2004
1996 Chrysler Town & Country (Van) 3.8L MIL Lamp on VIN: 1C4GP54L3T
P0300: random missfire. Looking for some direction on this van. Van came in with complaint of check engine light on. Code in system at that time was for cyl #1 missfire. It was in real need of a tune up. At this time I tuned it up & cleaned the injectors with motorvac and cleared...
December 30, 2004
2001 Jeep Cherokee Sport 4.0L No Start, Misfire, MIL Lamp on VIN: 1JFF48591L
P0300: Multiple Cylinder Misfire Detected. OK,Attention jeep techs, this vehicle arrived at our shop after the customer called requesting price for injector replace (only #3 injector), he had vehicle at another shop and they found code po303 but didnt verify trouble source, reset the light and he took ...
December 30, 2004
2000 Pontiac Grand Am SE 2.4L Excessive Emissions, Poor Idle Quality, Cuts out, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1G2NF52T6Y
P0300: Multiple Cylinder Misfire Detected. this has had the light go on and off for 2 years according to the owner, brought it out for smell out air ducts and to check light, it had a po303 # 3 miss fire- i changed plugs and checked ohms hot on the coils, looked for markes on coils and housing, checked...
December 30, 2004