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P0300 Diagnostic Trouble Code Discussion for April 2006

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
1997 Chrysler LHS 3.5L Misfire VIN: 2C3HC56F9V
P0300: Multiple Cylinder Misfire Detected. car came in with oil leak behind timing cover removed cover found oil leaks @ cam seals also recomended timing belt & water pump for PM since timing belt installed developed misfire have reset timing belt & replaced all tune-up related parts still miss...
April 01, 2006
2001 Nissan Sentra GXE 1.8L Poor Idle Quality, MIL Lamp on VIN: 3N1CB51D71
P0300: Multiple Misfire Detected. Customer failed emissions because of service engine light.Cuctomer changed O2 sensors both banks.Customer changed fuel pump & spark plugs.Now O2s both show very lean..02 volts.Enrich with with propane they go .850 to.900 volts. Mass airflow voltage tests.9...
April 03, 2006
2001 Oldsmobile Alero GL 2.4L Misfire, MIL Lamp on
P0300: Multiple Cylinder Misfire Detected. HI ALL CAR RUNS POORLY CODE P0300. TUNE UP IS GOOD. REPLACED MODULE COILS & PLUGS UNDER WARRENTY. FOUND FUEL PRESURE REG LEAKING INTO VAC LINE R&R PART. TESTED INJECTORS OK. #1 & #4 missfire. attatched 4 HAND MADE SPARK PLUG WIRES TO ACCESS PLUGS. ...
April 04, 2006
2004 Chevrolet Silverado 1500 4.3L fuel leak VIN: 1GCEC14X64
P0300: Multiple Cylinder Misfire Detected. vehicle came in with smell of gas and a check engine light-found gas smell heavy under hood removed injector harness at spider found fuel leaking up thru injectors-i have heard of this before and have heard of fuel soaking thru wiring harness-i am unable to fi...
April 05, 2006
2000 Volkswagen Golf GLS 2.0L MIL Lamp on VIN: WVWGC21J0Y
P0300: misfire recognized. ... check engine light on, no diveability symptons reported. I pulled codes and there was 9 codes stored, P1225, P1226, P1227, P1228, P1451, P1421, P1425, P1472, & P1128. 8 out of the 9 were short to ground related codes. I cleared codes had customer drive...
April 05, 2006
1997 Pontiac Sunfire SE 2.2L Poor Idle Quality, Surge, Misfire, MIL Lamp on VIN: 1G2JB1242V
P0300: Multiple Engine Misfire Detected. hey guys i got this sunfire here and can't go any futher with the tool i have. my lab scope only goes to 95. i used gerneric mode on secondary ignition wires and the two cylinders 2 & 4 misfire the most out of the four they have a waveform that the lab sco...
April 06, 2006
1996 Pontiac Grand Am SE 2.4L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1G2NE52TXT
P0300: Multiple Cylinder Misfire Detected. the car was purchesed at the acution it had a vacuum line undone and the BELOW parts were replaced do to fouling cracks and so on when it left it would only have a slight miss in the morning but go away after a while but now it is back missing all the time on ...
April 07, 2006
2000 Volkswagen Jetta GL 2.0L Misfire VIN: 3VWSS29M51
P0300: random misfire. what am I missing? you can feel the engine miss. vantage ignition tester shows 0.5 power kv on cylinder one. cylinder 2,3,and 4 have 11-14 kv. vaccuum is low. live data on vag-com shows constant miis on one and intermit miss on 3. I feel it something mechanic...
April 09, 2006
1996 Cadillac Fleetwood 5.7L Misfire, MIL Lamp on VIN: 1GC6DW52PO
P0300: Multiple Engine Misfire Detected. ... weeks ago. It came in for a p0300. Found that the egr valve was coming on way to soon and creating the misfire. If I unplug the vacuum line to the egr valve, the misfire is not present. In drive, under very slight acceleration, the egr duty cycle goes to 9...
April 10, 2006
2002 Chevrolet Blazer LS 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNCT18W72
P0300: Multiple Cylinder Misfire Detected. Blazer came in with check engine light was off and customer stated light comes on at times and sometimes it idle funny.Test drove blazer and is running okay.Checked codes and got po131,po171,po300.Check freeze frame and got freeze frame for po171.The fuel trim...
April 10, 2006
2000 Volkswagen Jetta GL 2.0L Misfire VIN: 3VWSS29M51
P0300: random misfire. what am I missing? you can feel the engine miss. vantage ignition tester shows 0.5 power kv on cylinder one. cylinder 2,3,and 4 have 11-14 kv. vaccuum is low. live data on vag-com shows constant miis on one and intermit miss on 3. I feel it something mechanic...
April 10, 2006
2000 Volkswagen Jetta GLS 2.0L Hesitation, Misfire VIN: 3VWSA29M5Y
P0300: random missfire. This car has an intermitant hesitation, it will occur when rpms are around 2200 and in a high gear,if you gear down the miss fire is gone(sorry it is a 5 speed, I clicked automtic up top).It will do this hot or cold, the car may do it many times in a day or go...
April 11, 2006
1997 Isuzu Rodeo LS 3.2L Misfire VIN: 4S2CM58V2V
P0300: Multiple Cylinder Misfire Detected. ... left for Iraq with the Air Force and left me his Isuzu which was knocking badly. We pulled the engine and had it rebuilt by a local rebuilder. Put it back in and have DTC P0300, random misfire. The #3 coil is not firing at all. I ran thru Alldata diagnosti...
April 12, 2006
2001 Mitsubishi Galant ES 2.4L Misfire, MIL Lamp on VIN: 4A3AA46G01
P0300: Random Misfire Detected. ... random missfire code. We replaced the spark plugs and the plug wires and coil boots. Car seemed to work fine. It came in once after that with p0300 and the freeze frame data showed 85% load and about 5000rpm. A kid was driving it. We cleared the code and i...
April 13, 2006
1996 Chevrolet S10 LS 4.3L Poor Idle Quality VIN: 1GCCT19W7T
P0300: Multiple Engine Misfire Detected. This vehicle graced our shop several days ago. The customer stated that after having his engine replaced across the mountains his S10 started idleing rough and stumbling on accelleration. Further probing found that he wasn't positive this symptom wasn't presen...
April 14, 2006
2000 Mercedes-Benz C230 Kompressor 2.3L Misfire, MIL Lamp on VIN: WBDHA24G7Y
P0300: Misfiring demages TWC fault indicator lamp on. ... in with request to change supercharger (noisy !) & tune-up with spark plugs.Also brake fluid flush & transmission flush.Car came from the local MB dealer. But cust. may didn't tell the whole story why car was in by dealer. After we done with tune-u...
April 14, 2006
2001 Mitsubishi Galant ES 2.4L Misfire, MIL Lamp on VIN: 4A3AA46G01
P0300: Random Misfire Detected. ... random missfire code. We replaced the spark plugs and the plug wires and coil boots. Car seemed to work fine. It came in once after that with p0300 and the freeze frame data showed 85% load and about 5000rpm. A kid was driving it. We cleared the code and i...
April 14, 2006
1998 Volkswagen Beetle 2.0L Poor Idle Quality, Cuts out, Stall VIN: 3VWBB61C8W
P0300: random misfire. vehicle came in barley running. found the brake booster vaccum lines cracked. replaced them. found #1 spark plug wire shorting out. replaced plugs and wires. chk compression while i had the intake off and found compression was 175-180 psi on all cylinders. ohm...
April 14, 2006
1996 Ford Windstar GL 3.8L Cuts out, Misfire, MIL Lamp on VIN: 2FMDA5147T
P0300: multiple cyl misfire. p0340 only hard code,cam sensor wiring has been tested,all grounds back to pcm have been checked,cam sensor and pcm have been replaced,code always resets.found cam sensor out of sync.180 degrees,set up sensor to number 1 cyl tdc.now engine runs better,but p034...
April 15, 2006
1998 Chevrolet Camaro 3.8L Misfire VIN: 2G1FP22KW2
P0300: Multiple Engine Misfire Detected. This one is being a pain, has a miss on cyl # 6 at idle and up to about 1400 rpm then it levels out. Fuel pressure is a little low for this car but the only cyl it is affecting is # 6 The intake gaskets were in bad shape, but didn't fix the problem. Has anyone...
April 19, 2006
1996 Pontiac Grand Am GT 2.4L Misfire, MIL Lamp on VIN: 1G2NW12T8T
P0300: Multiple Cylinder Misfire Detected. Hi to all..I am asking about a repetitive problem that we seem to begetting on this car.Ignition system components such as coil,tower ass.,sometimes plugs. system seems to burn out coils quiet regularly.all driver circuits are stable and electrical system is g...
April 19, 2006
2001 Pontiac Grand Am SE 2.4L Misfire, MIL Lamp on, HIGH IDLE VIN: 1G2NE52T31
P0300: Multiple Cylinder Misfire Detected. ... fault codes P0300,P0302,P0502.I have an intermittent slight misfire at idle only; that i can feel. I have verified misfire counts present with scan tool on cylinder 2. My fuel trims look good with no vacuum leaks. The idle is constantly high at 1200 rpm. I...
April 19, 2006
1998 Volvo S70 2.4L Misfire, MIL Lamp on VIN: YV1LS5539W
P0300: random misfire. Vehicle can in to shop with multiple codes stored in memory. Codes were misfire in all cylinders and a code for rich bank 1 (P0174) which has not returned since tune-up was performed. Codes do not return when under load, only when sitting at idle do codes reap...
April 19, 2006
1999 Chevrolet Silverado 1500 4.3L Misfire VIN: 1GCEC14W5X
P0300: Multiple Cylinder Misfire Detected. Truck came in with miss when at cruise speeds. The plugs plug wires dist cap rotor and fuel filter had been replaced at another shop 2 or 3 weeks previous. We scanned for codes and found PO300 random misfire.When test driving miss was noticed at steady cruise,...
April 20, 2006
2000 Mercedes-Benz E320 4Matic 3.2L Misfire, MIL Lamp on VIN: WDBJF82J4Y
this car has missfire detected on # 2 5 6 as soon as you try to drive it shut it off and restart it and it runs fine until you put a load on the motor. i have tried to switch the coils to different cylinders but no change. also tried to switch injectors and no...
April 20, 2006
1999 Toyota Camry LE 3.0L Misfire, MIL Lamp on, Chuggle, Black smoke VIN: JT2BF22K3X
P0300: Multiple Cylinder Misfire Detected. ... some minor body damage repaired (grill hood and left front fender replaced) The core support did shift back and dent the front exaust manifold heat shield and slightly bend the front mixture control sensor as I found out when I replaced it thinking it prob...
April 20, 2006
2001 Saturn L200 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G8JU52F21
P0300: Random Misfire Detected. ... surge. By the time I looked at it had a p0300. only happens at idle. misfire count happens on all cylinders but #2 is worse than others. Count can get as high as 10 on #2 and 5 on other cylinders before resetting to zero. Visual check of plugs indicated th...
April 22, 2006
2001 Saturn L200 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G8JU52F21
P0300: Random Misfire Detected. ... surge. By the time I looked at it had a p0300. only happens at idle. misfire count happens on all cylinders but #2 is worse than others. Count can get as high as 10 on #2 and 5 on other cylinders before resetting to zero. Visual check of plugs indicated th...
April 23, 2006
2002 Dodge Ram 1500 Van 3.9L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 2B6HB11X62
P0300: Multiple Cylinder Misfire Detected. I replaced ign wires(oe)because arcing was observed when misted with water.Cleared dtcs.Still ran very rough.Ran injector balance with snap on scan tool.#4and#6 weak,#3OK. Misfire dtcs not reset,no misfires shown on counter(system test).Now it gets good,scanne...
April 24, 2006
1996 Chevrolet Tahoe 5.7L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: 2GNEK18R9T
P0300: Multiple Cylinder Misfire Detected. ... rebuilt engine. my question is regarding code p1345 ckp/cmp correlation problem, recheck dist. installed right yes, could the tone ring on the crank be installed backwords it does have a key on the crank. vech misses real bad cylenders 3 & 4 have litt...
April 25, 2006
2000 GMC Sierra 1500 SL 4.8L Surge, MIL Lamp on VIN: 1GTEC14V5Y
P0300: Multiple Cylinder Misfire Detected. This 4.8L engine has no driveability problem but at cruise a misfire count starts on cylinders 2, 3 & 5 with #3 the highest count which causes the mil to come on. It has 0 count at idle. I have changed the coil, plugs, and wires and cylinder #3 injector an...
April 25, 2006
1997 Mercedes-Benz SL600 6.0L Hesitation, Misfire, MIL Lamp on VIN: WDFA76F3VF
P0300: Random misfire. Customer stated ESP light on and lost power Anable to find diagnostic tests on this car. We appriciate any help. Alfie
April 25, 2006
2001 Volkswagen Passat GLS 1.8L MIL Lamp on VIN: WVWPD23B51
P0300: 16686. ... codes ( 18062 plus evap code and 17544 ) which I fixed with a new purge valve solenoid , inst cluster temp sensor , the low price dual output coolant sensor on the engine fixed the problem, it also had code P 0171 or P 1136 or 17544 bank one mixture adapta...
April 27, 2006
2001 Chevrolet Silverado 2500 6.0L Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 1GCHK29U71
P0300: Multiple Cylinder Misfire Detected. ... wires him self , truck seems to run fine until you get on freeway going about 60 and the check engine lite starts flashing, check for codes and it has code p0300 it says random missfire. checked missfire data and shows cylinders 1,4,7,8 have missfire hundr...
April 28, 2006
2003 Chevrolet Avalanche 1500 5.3L Misfire VIN: 3GNEK13T42
P0300: Multiple Cylinder Misfire Detected. hello, and thanks for reading.customer said fuel pump was "whining", and a couple of days later the noise went away. next day the misfires started,multiple cyls,particularly 2 and 7,under all conditions.fuel filter was restricted,then exploded,causing ...
April 28, 2006
1998 Chevrolet Blazer 4.3L Poor Idle Quality, Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1GNDT13W5W
P0300: Multiple Cylinder Misfire Detected. on scan data in bay i show most missfires on # 2 and the next most on cyl#4 but under load all will have random missfire. i replaced the cap with a used delco cap and had different cylinders missing. i put on a new delco and rotar and truck barely ran also mis...
April 30, 2006