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P0300 Diagnostic Trouble Code Discussion for August 2013

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
1997 Toyota T100 DLX 3.4L Misfire VIN: JT4UN22D9V
P0300: Multiple Cylinder Misfire Detected. Hey Fellow Techs. Working on This T100. Intermittently the vehicle will misfire on cyl. #2 in park or in gear and cyl. #1 only in gear. Watching misfire on scan tool. Replaced plugs wires Igniter and coils. Same problem same cylinders misfiring #1 and #2. Swap...
August 01, 2013
2004 Chevrolet Silverado 3500 8.1L Hesitation, Misfire VIN: 1GCHK33G24
P0300: Multiple Engine Misfire Detected. ... really kicking my rear. the truck runs fine all the time, but as soon as you give it full throttle and it hits 3500 rpm, it as if a rev limiter kicks in. after first scanning for codes, I got a code P0300 and P0303. I check fuel pressure, and its in spec. ...
August 03, 2013
2006 Kia Amanti 3.5L Excessive Emissions, Hesitation, Misfire, MIL Lamp on VIN: KNALD12426
P0300: Multiple Misfire Detected. I need to find out if there is any one has knowledge of this egr system on this vehicle.I sent this customer to KIA I guess here in Raleigh they employ parts changers at the dealer after all the egr system was replaced the engine runs with misfire egr hooked u...
August 06, 2013
2005 Chevrolet Malibu 2.2L Cuts out, Misfire VIN: 1G1ZS52F85
P0300: Multiple Engine Misfire Detected. Vehicle idles smooth, has lack of power accelerating (no misfires) until 4000 rpm where it wont rev any higher and cuts out randomly misfiring on all cylinders. CEL starts flashing catalyst damaging until you let off throttle and light goes off and car returns...
August 07, 2013
2005 Chevrolet Malibu 2.2L Cuts out, Misfire VIN: 1G1ZS52F85
P0300: Multiple Engine Misfire Detected. Vehicle idles smooth, has lack of power accelerating (no misfires) until 4000 rpm where it wont rev any higher and cuts out randomly misfiring on all cylinders. CEL starts flashing catalyst damaging until you let off throttle and light goes off and car returns...
August 08, 2013
2008 Cadillac SRX 3.6L Misfire VIN: 1GYEE63758
P0300: Random Misfire. ... had P0300 and P0305 with no apparent misfire. I cleared the codes and told customer to come back if light came back on. 1 month went by and they came back with the car and the same codes but still no apparent misfire. At t...
August 09, 2013
2000 Land Rover Range Rover SE 4.0L MIL Lamp on, random misfire bank VIN: SALPV1542Y
P0300: random misfire. The problem has never happened for us, customer states it happens most often with engine not fully warmed up, and does not happen when engine is hot. We suspect it is coils but they do not fire all on one side. So what am I missing here. Thanks for the help. B...
August 09, 2013
2001 Audi Allroad Quattro 2.7L Misfire, MIL Lamp on VIN: WAUYP64B11
P0300: Random Misfire. Vehicle came in with above faults, problem only present under load. Revving in neutral no problem, light acceleration no problem, only under a load it will start missing badly. Cleared faults, swapped coils and plugs, (plugs recent new) with no change in perfo...
August 12, 2013
2003 Saab 9-3 Linear 2.0L Poor Idle Quality, MIL Lamp on VIN: YS3FB49S03
P0300: random multiple misfire. ... complaint but running normally. Found a failed cooling fan and a blown head gasket. Replaced the cooling fan and the head gasket. Had the head resurfaced and the valves checked by the machine shop. Installed head and set cam timing with correct blocks for ...
August 12, 2013
2003 Chevrolet S10 4.3L Misfire VIN: 1GCCT19XX3
P0300: Multiple Engine Misfire Detected. Counts miss fires on cylinder 4 in park from 2000-2500 rpm. Runs perfectly smooth. Unplug MAF or MAP and miss goes away.
August 13, 2013
2007 Hummer H3 3.7L Hesitation VIN: 5GTDN13E47
P0300: Engine Misfire Detected. truck has hesitation on acceleration. not as bad while cruise is on. has new plugs. stick on this one any help would be greatly appreciated
August 13, 2013
2007 Cadillac DTS 4.6L Misfire, MIL Lamp on VIN: 1G6KD57907
P0300: Multiple Misfire Detected. ... misfire between 1500 to 2000 rpm only on bank 1.It sets P0300 but on the misfire screen on tech2 you can see misfire counter climb on 1 3 5 7 cylinders but you do not feel a misfire. When that happens the fuel trim goes into open loop on both banks,the o2...
August 15, 2013
1998 Dodge Dakota SLT 5.2L Misfire VIN: 1B7GL22Y8W
P0300: Multiple Cylinder Misfire Detected. Truck came in with a plugged cat and a po300,po304,po307 codes because of the exhaust,now I have a po132 code high 02 1/1 voltage of 4.47 volts,also my mt2500 snap on scanner comes up with ol flt,I assume the ol means over load but what does the FLT mean.Just ...
August 17, 2013
2007 Cadillac DTS 4.6L Misfire, MIL Lamp on VIN: 1G6KD57907
P0300: Multiple Misfire Detected. ... misfire between 1500 to 2000 rpm only on bank 1.It sets P0300 but on the misfire screen on tech2 you can see misfire counter climb on 1 3 5 7 cylinders but you do not feel a misfire. When that happens the fuel trim goes into open loop on both banks,the o2...
August 19, 2013
2003 Chevrolet Monte Carlo SS 3.8L Misfire, MIL Lamp on VIN: 2G1WX12K13
P0300: Multiple Cylinder Misfire Detected. ... scanned code P0300 was the only code in the computer. The customer mentioned that the vehicles check engine light will go on and off. The code before was always the P0300, the customer said that the vehicle has only run rough once in awhile but the light w...
August 19, 2013
2004 Dodge Durango Limited 5.7L Poor Idle Quality, Misfire VIN: 1D4HB58D94
P0300: Multiple Misfire Detected. This vehicle had rough running problem before we ever touched it, customer states the dealer told him that you can not run platinum plugs in this engine??? Has anyone ever heard of this and if so why? From what little I have checked so far cylinders 1,3,5,&...
August 19, 2013
2007 Pontiac G6 GTP 3.6L Misfire
P0300: Random Misfire Detected. I just inherited an 07 G6 GTP from another tech. It has a misfire on all bank 1 cylinders(1,3 and 5). We have checked all the basic things, swapped coils, injectors, spark plugs. Checked compression and leakdown, normal results. Had the upper intake off and no...
August 19, 2013
2003 Chevrolet Monte Carlo SS 3.8L Misfire, MIL Lamp on VIN: 2G1WX12K13
P0300: Multiple Cylinder Misfire Detected. ... scanned code P0300 was the only code in the computer. The customer mentioned that the vehicles check engine light will go on and off. The code before was always the P0300, the customer said that the vehicle has only run rough once in awhile but the light w...
August 20, 2013
2004 Chevrolet Silverado 2500 6.0L Misfire VIN: 1GCHK23U04
P0300: Multiple Engine Misfire Detected. ... a p0300 that is a little odd. The only time I can get it to consistently misfire is free revving it between 2000 and 2500 rpm. Misfire is very consistent on cylinders 1 and 6. Cylinders 8 and 5 appear to be along for the ride on the misfire monitor as they...
August 20, 2013
2004 Dodge Durango Limited 5.7L Poor Idle Quality, Misfire VIN: 1D4HB58D94
P0300: Multiple Misfire Detected. This vehicle had rough running problem before we ever touched it, customer states the dealer told him that you can not run platinum plugs in this engine??? Has anyone ever heard of this and if so why? From what little I have checked so far cylinders 1,3,5,&...
August 20, 2013
2008 GMC Acadia SLT 3.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GKER33708
P0300: Engine misfire detected. When idling for the first minutes it will be fine. #2 will start to misfire. if i bring the engine off idle (1500 rpm) the miss goes away. When brought back to idle it comes back. When i disconnect #4 coil the misfire will stop on #2. The last repair shop repl...
August 21, 2013
1998 Mazda MPV ES 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: JM3LV5224W
P0300: Multiple Misfire Detected. This Mazda idles very rough and has a P0300. Customer replaced cap, rotor wires. We scoped the ignition system, ohm tested the injectors, tested fuel pressure and did a compression test. Compression was low 100PSI. We can not find a cause of the misfire but we...
August 21, 2013
2004 Dodge Intrepid Police 3.5L Excessive Emissions, Misfire VIN: 2B3HD46V04
P0300: Multiple Cylinder Misfire Detected. car came from another shop,i checked compression,plugs,coils did a upper engine carbon clean.no rhyme or reason it will start to miss on cylinders # 1 # 3 and # 5 at same time with identical misfire counts and pattern on all 3 cylinders.seems to do on cold sta...
August 26, 2013
2000 Audi A6 Quattro 4.2L Random misfire VIN: WAUZL64B0Y
P0300: Random cylinder misfire. Engine runs smoothly just after start up cold (three-four seconds) Then it begines to misfire and run poorly. Engine is low on power. As the engine warms up it begine to run better but still has a slight misfire at idle. When it is test driven and het at WOT (...
August 27, 2013
2000 Audi A6 Quattro 4.2L Random misfire VIN: WAUZL64B0Y
P0300: Random cylinder misfire. Engine runs smoothly just after start up cold (three-four seconds) Then it begines to misfire and run poorly. Engine is low on power. As the engine warms up it begine to run better but still has a slight misfire at idle. When it is test driven and het at WOT (...
August 28, 2013
2007 Chevrolet Express 2500 4.8L Poor Idle Quality, Misfire VIN: 1GCGG25V57
P0300: Multiple Cylinder Misfire Detected. ... on, scanned computer and code P0300 stored. Scanned misfire counters and only cylinders 7 and 8 show misfires, cylinder 8 has 100x more misfires counts. The idle speed is normal but slightly rough, the motor will smooth out at around 900 and the misfire co...
August 29, 2013
2007 Honda Odyssey EX 3.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: 5FNRL387X7
P0300: Random Misfire Detected. ... symptoms from customer. Only code in system was a P0300. Freeze frame showed code sets before closed loop. Kept vehicle over night for a cold soak and at first start up there are sevral misfires on all cylinders, none more than others but all misfiring. It...
August 31, 2013