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P0300 Diagnostic Trouble Code Discussion for September 2009

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2005 Dodge Grand Caravan 3.3L Poor Idle Quality, Hesitation, Stall VIN: 2D4GP44L86
P0300: Multiple Cylinder Misfire Detected. ... the codes and none have come back p0404,p0300,p0403,p0406,p0344,p0339,p0335,p0108,p0700,p0344 ,p0339,p0335,p0882 If you put the car in neutral and hold the rpms up and then pop it into d...
September 01, 2009
2001 Toyota RAV4 2.0L MIL Lamp on VIN: JTEGH20VG1
P0300: Multiple Cylinder Misfire Detected. no noticable runing problems. mil on and po300 present. test drove with scanner and found both long term trims at 19 percent short terms about 8 percent idle and cruise. some inter miss fires on counters (unfelt by driver) mostly from cyl 3 and 4. i cleaned ma...
September 01, 2009
2001 Chevrolet Blazer LS 4.3L Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GCNCT18W4
P0300: Multiple Cylinder Misfire Detected. Hi need some help from you gm techs. This blazer is driving us nuts. Intermitently while drving it will start missfiring bad to the point where you need to pull over due to lack of power then it will fix itself and start running great and not do it again for 2...
September 02, 2009
2006 Ford Taurus SE 3.0L Misfire, MIL Lamp on VIN: 1FAFP56U56
P0300: multiple missfire. Need to know of a simple way to time these syncronizers? Did not want to have to purchase tool. Thanks Nate
September 02, 2009
1997 Nissan Maxima GLE 3.0L Stall, MIL Lamp on VIN: 4TN2795U2V
P0300: Multiple Misfire Detected. ... reverce and light on code# p0300 and p0136 i check spark are fine and i have good rpm signal! i try decabon service!it help for one or two days and then stall again when shift on reverce i did replace 2 crank sensor it get better but still stall some time ...
September 02, 2009
2005 Dodge Grand Caravan 3.3L Poor Idle Quality, Hesitation, Stall VIN: 2D4GP44L86
P0300: Multiple Cylinder Misfire Detected. ... the codes and none have come back p0404,p0300,p0403,p0406,p0344,p0339,p0335,p0108,p0700,p0344 ,p0339,p0335,p0882 If you put the car in neutral and hold the rpms up and then pop it into d...
September 03, 2009
1999 Land Rover Discovery SD 4.0L MIL Lamp on VIN: SALJY1249X
P0300: Random / Multiple Misfire. Dealership trade in. Found oxygen sensor registering full rich bank one and full lean bank 2, switched harness from bank 1 to bank 2 and vice versa. Mixture returned to normal. Vehicle runs very smooth and has all the power to be expected. From time to time th...
September 08, 2009
1998 Chevrolet Tahoe 5.7L Poor Idle Quality, MIL Lamp on VIN: 1GNEC13R6W
P0300: Multiple Cylinder Misfire Detected. has po300 misfire but cylinder no 3 and 5 have the misfire at ilde, at 2000 rpm its just cylinder 5 has the misfire.
September 11, 2009
2004 Chevrolet Aveo 1.6L Misfire, MIL Lamp on VIN: KL1TD52624
P0300: Engine Misfire Detected. ... p0700 and p1781 traced problem to tcm(trans control module), after replacing module now getting code p0300 i don't feel a miss while driving (thats when light comes on and flashes) engine runs little rough at idle. have ...
September 14, 2009
2002 Dodge Ram 1500 Van 5.2L Excessive Emissions, Hesitation, Cuts out, Misfire, MIL Lamp on
P0300: Multiple Cylinder Misfire Detected. ... today.Just trying to get some suggestions because the owner is visiting the area and needs the van asap.Car was towed in.C/S CEL was on and vehicle lost power.test drove vehicle and conferred symptom.On a hill when under high load, vehicle loses power and ...
September 14, 2009
2006 Ford Taurus SE 3.0L Misfire, MIL Lamp on VIN: 1FAFP56U56
P0300: multiple missfire. Need to know of a simple way to time these syncronizers? Did not want to have to purchase tool. Thanks Nate
September 14, 2009
1998 Honda Accord LX 3.0L MIL Lamp on VIN: 1HGCG164XW
P0300: Multiple Misfire Detected. I have misfire codes P0300 thru P0306. Customer had no complaints. Car runs excellent. Ignition parts are not new but they look OK. I cleared the codes and tried to reset the codes but couldn't. Freeze frame data: rpm - 5700 RPM, VEH SPEED - 52 MPH, LTFT - 2.0...
September 14, 2009
2005 Audi A4 Quattro 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WAULC68E15
P0300: multiple / random misfire. runs very rough and mil flashes at idle. runs fine with foot on brake and in gear if rpm is above 1100 rpm. MAF reads higher than alldata says it should at idle. checked power, ground and 5 volt ref. all ok. Replaced MAF with new bosch from aftermarket suppli...
September 15, 2009
2005 Saturn Vue 3.5L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire VIN: 5GZCZ53495
P0300: Cylinder 2 Misfire Detected. Customer states vehicle runs rough in the morning. Only in the morning. Let vehicle sit overnight. Yes, it runs rough. Misfires, Hard to start, pops, stalls... Sounds like possibly out of time. Clears up as it warms up. any perticular place to start here? I ...
September 15, 2009
1997 Chevrolet Blazer 4.3L Misfire VIN: 1GNDT13W3V
P0300: Multiple Cylinder Misfire Detected. engine misses on 1-3-5 cylinders.2-4-6-are fine.replaced plugs,wires,cap,rotor.checked for internal vacum leak,none found.fuel pressure fine.[...] all 3.miss comes and goes just on these cyl. when hooked to modis.leaning toward spider injector,but not sure.any...
September 16, 2009
1998 Chevrolet Astro LS 4.3L Poor Idle Quality, Hesitation, Misfire VIN: 1GBDM19W1V
P0300: Multiple Cylinder Misfire Detected. cylinders 1 and 2 are misfiring. plugs are clean. wires intact. pulled plenum and the left bank is slightly washed looking but the right hand bank is highly carboned. more misfires on cyl 2 than cyl 1. did pressure drop test and all injectors dropped about the...
September 17, 2009
1997 GMC Yukon SL 5.7L Misfire, MIL Lamp on VIN: 1GKEK13RXV
P0300: Multiple Cylinder Misfire Detected. ... Have read most of archives on this vehicle. When driving on flat or foot hills, would not think of this truck having a problem. But when you start up a steeper pull the misfire becomes very obvious. Truck had new fuel pump, 35,000 miles ago, new plugs, rot...
September 17, 2009
2003 Cadillac CTS 3.2L Poor Idle Quality, Misfire VIN: 1G6DM57N13
P0300: Multiple Cylinder Misfire Detected. vehicle came in with check engine light flashing and codes po300, po301, po303 and po305 all on the right bank. vehicle only misses at an idle. bring idle up to 1200 rpm, misfires stop. while at an idle, engine runs rough but not like all 3 cylinders are dead....
September 18, 2009
2003 Chevrolet Silverado 1500 4.8L Surge, Misfire VIN: 2GCEC19V83
P0300: Multiple Cylinder Misfire Detected. ... misfire code present at first. codes p0172, p0175 rich b1, b2. a surging idle that gets worse as it warms up. also surges on acceleration up to about 2000 rpm, then is only felt occasionally at higher speeds. checked tune-up, r...
September 18, 2009
2004 Kia Sedona EX 3.5L MIL Lamp on VIN: KNDUP13114
P0300: Multiple Misfire Detected. ... will loose power but still keeps rhythm Verified new plugs and wires. checked coils for external leakage with soapy water (no misfires or arcs noticed) Replaced Ign fail sensor no change. Cut tach wire still sets p0320. swapped a ign capacitor that's wi...
September 18, 2009
2004 Mercury Monterey (Van) 4.2L Misfire, MIL Lamp on VIN: 2MRZA20224
P0300: Random Misfire. Hi All,This vehicle vame in with new coil,plugs,wires,fuel filter,EGR valve and DPFE sensor.Vehicle still misses intermittently but does not store codes immediately.Checked all previous repairs and found all satisfactory.Misses stronger at highway speed.At 120...
September 18, 2009
2004 Mitsubishi Galant LS 3.8L Poor Idle Quality, Hesitation, Surge, Stall, Misfire, MIL Lamp on VIN: 4A3AB46S44
P0300: Random Misfire Detected. Hi, this vehicle came in with a rough idle and hard start it also seems to be running rich due to the exhaust smell, we check compression on the front 3 cylinders and they are all at 185 psi, timing marks are right on,fuel trims are -3 to 4%.
September 19, 2009
2004 Land Rover Discovery SE 4.6L Misfire, MIL Lamp on VIN: SALTW194X4
P0300: catalyst damaging misfire multiple cylinders. Hello fellow teachs, We have a 2004 land rover disco2 with a intermitant misfire . Some times on cold start it will miss for 10 seconds or so and then fine for rest of time. It has been comforted buy the normal plugs wires and coils by two different shops with...
September 21, 2009
1997 Ford Mustang 3.8L Hesitation, Cuts out, Misfire, Poor Fuel Economy VIN: 1FALP4048V
P0300: random misfire. vehicle came in on hook would barely run. replaced intake and all tuneup parts coil and cam sens(came in out of sync). now under a light load will hesitate and stall. runs great at idle and wide open. scoped-tps,mass,injector drivers and coil drivers - all loo...
September 22, 2009
1996 Chrysler Town & Country (Van) LX 3.3L Misfire, MIL Lamp on VIN: 1C4GP44G24
P0300: Randon Multiple cylinder misfire. This vehicle has a lot of miles but runs great. I R&R the trans and removed the flywheel for inspection and it is ok. With misfire pids up on the scanner it misfires in park between 1500 and 3200 rpms. it also only shows the misfire data on light throttle ...
September 23, 2009
1997 Ford Mustang 3.8L Hesitation, Cuts out, Misfire, Poor Fuel Economy VIN: 1FALP4048V
P0300: random misfire. vehicle came in on hook would barely run. replaced intake and all tuneup parts coil and cam sens(came in out of sync). now under a light load will hesitate and stall. runs great at idle and wide open. scoped-tps,mass,injector drivers and coil drivers - all loo...
September 23, 2009
2004 Lexus RX330 3.3L Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on VIN: 272GA31U54
P0300: Multiple Cylinder Misfire Detected. ... atlanta day after very significant flooding. Customer states that no flood waters were encountered with vehicle. As you can see with the tests already performed on the vehicle, all tests concerning driveability are within normal values. after revving mo...
September 23, 2009
1997 Chevrolet Blazer 4.3L Hesitation, Misfire, MIL Lamp on VIN: 1GNCS13W1V
P0300: Multiple Cylinder Misfire Detected. One yr later here it sits with the same p0300 and its misfiring on cyl #3 & #4. #4 is the worst with a count of over 1700. #3 is around 350 and all others are at 0. ive watched the o2 sensors. post cat sensor indicates bad cat. Checked for back pressure no...
September 24, 2009
2002 Chevrolet Suburban 2500 LT 6.0L Misfire, MIL Lamp on VIN: 2GNGK26U62
P0300: Multiple Cylinder Misfire Detected. at the end of my rope with this one. random misfire code po 300 will set along with a flashing ses light when under load at highway speeds. misfire counters show heavy misfires on cylinders # 5 and 6, and moderate amount of misfires on cyls. 1 and 8. no engine...
September 24, 2009
2002 Mercedes-Benz ML320 3.2L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 4JGAB54E12
P0300: multiple random misfire. Hello all you mercedes techs out there, this one is killing us. We have changed everythign and still the same codes are popping up, sorry it's been a long day and I don't feel like going to my other dest to get the benz codes so I just entered the odb11 codes ...
September 24, 2009
2007 Pontiac Solstice 2.4L Misfire, MIL Lamp on VIN: 1G2MB35B47
P0300: Random Misfire Detected. what happens is that for the first 2-3mins of running oxygen sensor upstream is switching properly and then it will go to 10mv and just sit there no switch no nothing, downstream oxygen sensor reads almost 1000mv while problem is occuring. now being a flood vi...
September 24, 2009
1998 Chevrolet C1500 Cheyenne 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCEC14W0W
P0300: Multiple Cylinder Misfire Detected. thanks in advance . this vehicle has a constant instant miss fire .cyl # 5 is a constant miss fire on or off idle . # 6 is a slower miss fire count at idle & miss fire disappears off idle . fuel pressure is 60 psi,replaced spark plugs,ignition wires,distri...
September 25, 2009
1999 Oldsmobile Intrigue GL 3.5L Misfire, MIL Lamp on
P0300: Engine Misfire Detected. This car originally came to us for an New york state inspection. the customer was upset when they found out it had failed the emissions portion due to an "illuminated" mil. WRONG, the MIL is inop. KoEo shows no activity. Cannot command it with a scanne...
September 25, 2009
1999 Mercedes-Benz E320 3.2L Misfire, MIL Lamp on VIN: WDBJF65FDW
P0300: ramdom mis-fire detected. hello guys.please somebody help me with this problem.this mercedes is driving me crazy.engine runs great until when temp gets up to 93c.it will set check engine light and starts mis firing on #1 cylinder.good spark but no injector signal from ecm.i really hate...
September 28, 2009
1998 Chevrolet C1500 Silverado 4.3L Excessive Emissions, Poor Idle Quality, Hesitation, Surge VIN: 1GCEC14W9W
P0300: Multiple Cylinder Misfire Detected. thanks in advance guys.this has been a good one.SITTING STILL AT IDLE THE ENGINE RUNS PRETTY SMOOTH.WHILE DRIVING AT ABOUT 1500 TO 2000 RPM THE ENGINE STARTS TO BUCK AND SPARK KNOCK "REALY BAD".AT FULL THROTTLE IT SMOOTHS BACK UP AND RUNS GREAT.ALL FUE...
September 29, 2009
2006 Chevrolet Silverado 2500 HD LS 6.0L Poor Idle Quality, Misfire VIN: 1GCHC24U11
P0300: Multiple Engine Misfire Detected. Ok chev. buffs,this problem occurs mostly on start ups sometimes when just @ idle.Drivers side all 4 cyls. drop out. it has injector pulse, when i go to check spark problem goes away eng.runs fine, when you turn eng. off then start it runs fine also.
September 29, 2009
1998 Chevrolet C1500 Silverado 4.3L Excessive Emissions, Poor Idle Quality, Hesitation, Surge VIN: 1GCEC14W9W
P0300: Multiple Cylinder Misfire Detected. thanks in advance guys.this has been a good one.SITTING STILL AT IDLE THE ENGINE RUNS PRETTY SMOOTH.WHILE DRIVING AT ABOUT 1500 TO 2000 RPM THE ENGINE STARTS TO BUCK AND SPARK KNOCK "REALY BAD".AT FULL THROTTLE IT SMOOTHS BACK UP AND RUNS GREAT.ALL FUE...
September 30, 2009
2001 Chevrolet S10 LS 4.3L Misfire, MIL Lamp on, misfire 1&4 cyl p300 VIN: 1GCCS19W61
P0300: Multiple Engine Misfire Detected. truck was towed in with blown engine,replaced with low mile used engine.resealed and tuned.ran great after replacement was completed.truck returned 2weeks later for fuel level sensor repair.thats when we found the misfire codes.no complaint from customer, high...
September 30, 2009