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P0300 Diagnostic Trouble Code Discussion for December 2009

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
1999 Mercedes-Benz C43 AMG 4.3L Hesitation, Misfire VIN: WDBHA33GXF
P0300: Random Misfire. This one is giving us a headache. This vehicle when cold, will fall on its face under medium to wide open throttle and will not rev up. It will start missing when it is hesitating and turn on the check engine light showing misfires on the right bank. Once the ...
December 01, 2009
2008 Chevrolet Colorado LT 3.7L Poor Idle Quality, Hesitation, Surge, Misfire, MIL Lamp on VIN: 1GBDS14E38
P0300: Randommultiple cylinder misfire. Hi guys got another problem child here! Ok we bought this truck with a blown motor so we got a motor from a local salvage yard. The motor came out of a 2007 year model which said it was supposed to work if you swap out the cam sensor. So we did all that and go...
December 02, 2009
1999 Chevrolet Astro 4.3L Poor Idle Quality, Misfire VIN: 1GCDM19W4X
P0300: Multiple Cylinder Misfire Detected. ... fuse # 7 under dash blown (25 amp aux and dlc ) replaced fuse and checked for codes none found (i did not road test this van) came back with code p0300 and p0304 opend eng comp and found that the dist cap rotor wires and plugs where oem dist cap still had ...
December 03, 2009
2004 Chrysler PT Cruiser 2.4L Misfire VIN: 3C4FY48B14
P0300: Multiple Cylinder Misfire Detected. Got this one from a friend's referal. It has been to the dealer, and customer was so disapointed she brought it here. The initial diagnosis was a bad ignition coil, which was replaced by the dealer. Then the diagnosis was a bad computer driver for the ignition...
December 03, 2009
2000 Pontiac Grand Am GT 3.4L Misfire, MIL Lamp on VIN: 1G2NW12E9Y
P0300: Multiple Cylinder Misfire Detected. Hello, thanks in advance! I starting working on this following alot of repairs. Random Misfire @ 2100-2600 RPMs, in any gear of the transmission. normally occurs at highway speeds. Won't misfire accept when driving not even when under a load in shop. This unit...
December 03, 2009
2000 Pontiac Grand Am GT 3.4L Misfire, MIL Lamp on VIN: 1G2NW12E9Y
P0300: Multiple Cylinder Misfire Detected. Hello, thanks in advance! I starting working on this following alot of repairs. Random Misfire @ 2100-2600 RPMs, in any gear of the transmission. normally occurs at highway speeds. Won't misfire accept when driving not even when under a load in shop. This unit...
December 04, 2009
2003 GMC Yukon Denali 6.0L Misfire, MIL Lamp on VIN: 1GKEK63UX3
P0300: Multiple Cylinder Misfire Detected. ... 6.0L. The issue is a P0300 misfire severe enough that the MIL will flash. This truck is my Mothers vehicle. This situation happened a couple months ago. No problem was found at that time. It is intermittent. Currently not misfiring now (intermittent). The ...
December 05, 2009
2004 Jeep Liberty Limited 3.7L MIL Lamp on VIN: 1J4GL58K74
P0300: Multiple Misfire Detected. ... start dyes and runs real bad for the first one or two min. then it takes off and runs fine till you let it cool off over night.colder winter temp. seems to make it worse. sometimes it sets a p0300 misfire code. replaced fuel pump module becuse it seemed th...
December 07, 2009
1998 Mazda MPV LX 3.0L No Start, Poor Idle Quality, Misfire VIN: JM3LV5230W
P0300: Multiple Misfire Detected. ... poor idle and no power. he left it overnight and when i tried to start it to bring it inside, it would not start. hooked up modis, pulled p0300 random/ multiple misfire. looked at live data while cranking, i see a rpm signal(both on modis and tachometer)...
December 07, 2009
1997 Oldsmobile Silhouette 3.4L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GHPU06EV5
P0300: Multiple Cylinder Misfire Detected. car came in for rough running all speeds. engine will run for 2 seconds smooth when first started & then misfire. cleaned injectors with gm injector cleaner, vacuum readings normal. spark plugs are correct, firing order is correct checked coils for arcing ...
December 07, 2009
2003 Cadillac Escalade 6.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GYEK63N43
P0300: Multiple Cylinder Misfire Detected. I have this 03 Escalade, one of our recon vehicles, with misfires at idle. There are no misfires until the idle drops to 575-625 hot idle, park or in gear, then #5 misfire counter runs up steadily followed by #4 at a slower misfire rate. Any slight raise in rp...
December 08, 2009
2003 Honda Pilot EX 3.5L Misfire VIN: 2HKYF18453
P0300: Random Misfire Detected. This vehicle has a slight miss at idle only. Has had previous work done at another repair facility to cure this problem. Now it is at our shop and was wondering what direction I should start with to fix this problem. I know these carlines have problems with eg...
December 08, 2009
1997 Oldsmobile Silhouette 3.4L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GHPU06EV5
P0300: Multiple Cylinder Misfire Detected. car came in for rough running all speeds. engine will run for 2 seconds smooth when first started & then misfire. cleaned injectors with gm injector cleaner, vacuum readings normal. spark plugs are correct, firing order is correct checked coils for arcing ...
December 08, 2009
2003 Cadillac Escalade 6.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GYEK63N43
P0300: Multiple Cylinder Misfire Detected. I have this 03 Escalade, one of our recon vehicles, with misfires at idle. There are no misfires until the idle drops to 575-625 hot idle, park or in gear, then #5 misfire counter runs up steadily followed by #4 at a slower misfire rate. Any slight raise in rp...
December 09, 2009
2008 Chevrolet Colorado LT 3.7L Poor Idle Quality, Hesitation, Surge, Misfire, MIL Lamp on VIN: 1GBDS14E38
P0300: Randommultiple cylinder misfire. Hi guys got another problem child here! Ok we bought this truck with a blown motor so we got a motor from a local salvage yard. The motor came out of a 2007 year model which said it was supposed to work if you swap out the cam sensor. So we did all that and go...
December 09, 2009
1999 Mitsubishi Montero 3.5L MIL Lamp on VIN: JA4MR51RXX
P0300: Random Misfire Detected. Wow, my week for Montereos. Two here at the ame time. Customer complained of running rough,bogging out and wouldnt shift. Truck starts right up and sounds normal at idle, it will not accept any throttle, just bogs out like no fuel. Scanned and retrieved the ab...
December 09, 2009
2000 Volkswagen Cabrio GL 2.0L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 3VWCC21V8Y
P0300: Random misfire. I am stuck here. Engine has a bad hesitation and running very lean. if I add fuel the vacuum reading comes into spec. O2 sensors start working, and engine reves. I have tried a good used and brand new MAF sesnor. Swapped out the Fuel pressure regulator. Smoke ...
December 09, 2009
2006 Lincoln Mark LT 5.4L Hesitation, Poor Fuel Economy, MIL Lamp on VIN: 5LTPW16506
P0300: random misfire. missfire occures at 1800 rpm , drives poors
December 10, 2009
2003 Saturn L200 2.2L Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1G8JU54F73
P0300: Random Misfire Detected. I'm having a shifting issue with this vehicle, its lacking power too but that can be due to the cat converter(waiting for part). The unit shifts at high RPM under load 3900 to 4100 rpm. When at express way speeds under acceleration it will down shift to 2nd ge...
December 10, 2009
2005 Ford Taurus SE 3.0L Misfire VIN: 1FAFP53U65
P0300: Random Cylinder Misfire. ... wrecked and fixed for my mom. I had dropped engine out for repair to main frame rails. I had to replace front head and coil due to accident. Used those parts off a parts car with 73k on it. Vehicle has ran fine for about 20k miles. I replaced the plugs abo...
December 11, 2009
2000 Mazda MPV DX 2.5L Poor Idle Quality, Misfire VIN: JM3LW28G6Y
P0300: Multiple Misfire Detected. ... random missfire w/poor idle quality.we found bank 1 rich lt trim -15 and bank 2 lean lt trim +15.after smoke test egr,iac and intake were leaking vacumn.replaced above and resealed intake with no improvement.we have checked everything and resett computer w...
December 11, 2009
1999 Mercedes-Benz C280 2.8L Misfire VIN: WDBHA29G4X
Been a Member since 1994.Rarely ask for Help. This is a hair Puller! Compression,Fuel Pressure, Engine in good Shape Car runs on 6 Cylinders, It will then start to miss fire on cylinders 4 5 & 6.Will Sit and Idle all day only happens under a load. The comp...
December 11, 2009
2008 BMW 335i 3.0L Poor Idle Quality, Misfire, MIL Lamp on, WHITE SMOKE, COLD VIN: WBAWB73528
P0300: random misfire. Customer cals with "serious check engine light and car running rough and smoking". I scan and find all these lean and misfire codes, engine in safe mode(restricted boost I think)retrieve freeze frame data and clear codes. Start car, idles smooth, no sm...
December 12, 2009
2004 Ford Taurus SE 3.0L MIL Lamp on VIN: 1FAFP53224
P0300: missfire detected. ... advance for all your help.I have this 04 Tauras that has come back for its 3rd. visit with the check engine light on.First 2 visits it had (2)codes stored p0171 & p0174.Both time both codes were only stored in memory and unable to duplicate.Checked for...
December 14, 2009
2000 Toyota Celica GT 1.8L Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: JTDDR32T5Y
P0300: Multiple Cylinder Misfire Detected. Vehicle came in running rough with lack of power. Cleaned MAF sensor and got a little better. Removed battery cables to clean posts and after restarting motor ran terrible. Now has extreme lack of power, feels like retarded timing but timing is at 16 degrees a...
December 14, 2009
2000 Chevrolet Silverado 1500 4.3L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCEC14W6Y
P0300: Multiple Cylinder Misfire Detected. This truck has got me at a loss, came in after he went into a ditch, nothing major but customer says truck ran like shit after hitting the ditch. First test drive showed misfires on all cylinder with 6 being the worst and sometimes up to 33000 counts. I went t...
December 15, 2009
2004 Chevrolet Silverado 2500 HD LS 6.0L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: 1GCHK23U44
P0300: Multiple Engine Misfire Detected. Can any one help me with this one? I have got a miss at Idle that I just cannot seem to nail down. I have ran through all the basics and just cannot find any answers. I thought it might be from the contaminated gasoline that had diesel in it. But after two fue...
December 16, 2009
2006 Chevrolet Colorado LT 3.5L Poor Idle Quality, Hesitation, Surge, Misfire VIN: 1GCCS14666
P0300: Engine Misfire Detected. This Chevy came in with a lite on and surging and hesitating. Code p0017. I changed the CMP and CKP but there was no change. I checked the variable timing solenoid out of the truck but it appeared to be working ok. It looks like I may have to replace the varia...
December 16, 2009
2005 Ford Taurus SE 3.0L Misfire VIN: 1FAFP53U65
P0300: Random Cylinder Misfire. ... wrecked and fixed for my mom. I had dropped engine out for repair to main frame rails. I had to replace front head and coil due to accident. Used those parts off a parts car with 73k on it. Vehicle has ran fine for about 20k miles. I replaced the plugs abo...
December 16, 2009
2005 Chevrolet Malibu 2.2L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G1ND52F25
P0300: Multiple Engine Misfire Detected. hello and happy holidays gentlemen, i have a 2005 chevrolet malibu with a 2.2liter ecotech engine. problem at hand is cylinder #2 and #3 have no spark out of the ignition coil. we have replaced the module and housing 3 times for the sake of it just not being a...
December 17, 2009
2005 Chevrolet Malibu 2.2L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G1ND52F25
P0300: Multiple Engine Misfire Detected. hello and happy holidays gentlemen, i have a 2005 chevrolet malibu with a 2.2liter ecotech engine. problem at hand is cylinder #2 and #3 have no spark out of the ignition coil. we have replaced the module and housing 3 times for the sake of it just not being a...
December 17, 2009
2007 GMC Acadia SLT 3.6L Misfire VIN: 1GKER33777
P0300: Multiple Engine Misfire Detected. Well Techs I'm looking for some info on a 07 Acadia 3.6 I have low compession on #4 cyl. 115-120 psi. and according to the tech2 it misses on #4 cyl. at idle like at a stop sign and clears up after go take off. At a idle it starts missing and the MIL light bli...
December 17, 2009
2004 Acura TL 3.2L Misfire, MIL Lamp on VIN: 19UUA66274
P0300: Random Misfire Detected. ... checked valves and exhuasts were tight, adjusted valves and smooth idle now, but on heavy acceleration runs great but when you let off gas and resume cruise speed it will misfire and cel flashes with above codes. have tried replacing egr valve to no avail ...
December 18, 2009
2004 Acura TL 3.2L Misfire, MIL Lamp on VIN: 19UUA66274
P0300: Random Misfire Detected. ... checked valves and exhuasts were tight, adjusted valves and smooth idle now, but on heavy acceleration runs great but when you let off gas and resume cruise speed it will misfire and cel flashes with above codes. have tried replacing egr valve to no avail ...
December 18, 2009
2003 Chevrolet Avalanche 1500 5.3L Misfire VIN: 3GNEK13T83
P0300: Multiple Cylinder Misfire Detected. Heres one for all you gm techs.We will start from beginning. customer brought in 03 avalanche 5.3 liter for a tune up says that it was missing once and awhile.check vehicle over and find that outside of the air filter every thing is original.so we install new ...
December 20, 2009
1998 Chevrolet Astro 4.3L No Start, Stall, Misfire VIN: 1GNDM19W5W
P0300: Multiple Cylinder Misfire Detected. Hello, I have this 98 Chevy Astro with 4.3 that came in and I replaced the intake manifold gasket to repair a coolant leak. When first tested the engine showed misfires on #3 and #6 cylinder. It runs ruff due to misfires, but then the engine will die just like...
December 21, 2009
2006 Ford E-150 XLT 5.4L Misfire VIN: 1FTPX14596
P0300: Random Cylinder Misfire. Vechile Misfires when acellerating in passing gear number 5 cylinder. Switched coils from #5 cylinder to #6, missfire didn't change still #5 missfire code.
December 21, 2009
2001 Volkswagen Jetta GLS 1.8L Cuts out, Misfire, MIL Lamp on VIN: 3VWSD69M01
P0300: Random Misfire. This is one of those that has been at multiple garages, lucky me. Intermitently the throttle will drop out but if customer parks vehicle it will come back leaving codes stored above. Also vehicle came in with a horible misfire at idle. I checked vacuum and the...
December 21, 2009
2006 Ford E-350 Super Duty XL 5.4L Misfire, MIL Lamp on VIN: 1FDSE35L96
P0300: Random Misfire Detected. Hello, Have this truck we installed a jasper 1 month ago,Truck has been running great. Truck gets used for a service truck for an oil company so it is getting used alot. I went into archives and found some problems like this but they were harness problems a...
December 22, 2009
2002 Honda CR-V LX 2.4L No Start, Misfire, Poor Fuel Economy, MIL Lamp on, Rich VIN: SHSRD68422
P0300: Multiple Misfire Detected. Hello everyone. The main problem with this vehicle is it runs very rich. So much so that when cold it will soak the spark plugs and not start. I pulled the plugs and let it sit overnight. I did the compression check and re-installed the plugs. It starts and ru...
December 22, 2009
2004 Ford Thunderbird 3.9L Misfire VIN: 1FAHP6OAX4
P0300: Random cylinder misfire. ... computer found code P0351. Swaped coil with number two code changed to P0352. Replaced coil and plug. Test drivin it all seemed fine. Perfomend a fuel injection air induction service, test drove and noticed a skip. scanned the computer found codes P0308, p...
December 23, 2009
2003 Nissan Sentra XE 1.8L Poor Idle Quality, Misfire VIN: 3N1CB51D83
P0300: Multiple Misfire Detected. ... bad when first started in the morning, will clear up after a little bit of driving, and the check engine light is on. have not gotten to get it to happen to me. first visit pulled in with no problems, scanned and got p0302 code. pulled plugs to inspect the...
December 23, 2009
2001 Volkswagen Jetta GLS 1.8L Cuts out, Misfire, MIL Lamp on VIN: 3VWSD69M01
P0300: Random Misfire. This is one of those that has been at multiple garages, lucky me. Intermitently the throttle will drop out but if customer parks vehicle it will come back leaving codes stored above. Also vehicle came in with a horible misfire at idle. I checked vacuum and the...
December 23, 2009
1996 Volkswagen Golf GTI VR6 2.8L No Start
P0300: random misfire. Car came in as a crank no start. Customer stated that it stumbled, stalled and then wouldnt restart on a local drive in heavy rain. Found that fuel pump relay is not being grounded by ECM. Fuel pump relay supplies voltage to most of the other engine control co...
December 26, 2009
1996 Volkswagen Golf GTI VR6 2.8L No Start
P0300: random misfire. Car came in as a crank no start. Customer stated that it stumbled, stalled and then wouldnt restart on a local drive in heavy rain. Found that fuel pump relay is not being grounded by ECM. Fuel pump relay supplies voltage to most of the other engine control co...
December 27, 2009
2001 Chevrolet Cavalier Z24 2.4L Misfire VIN: 1G1JF12T31
P0300: Multiple Engine Misfire Detected. Car has a misfire on 1 and 4. Found it's not getting spark on those two cylinders. This engine has those silly "coils under the cover" set up so I unbolted the cover and attached four plug wires to the contacts of the coils and then to the plugs, start...
December 28, 2009
2005 Cadillac CTS 3.6L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G6DP56765
P0300: Engine Misfire Detected. No experience on this engine.Car was towed in 2 weeks ago and would not start, found almost no oil in engine, changed oil and vehicle started and has been running fine since. Now we have a rough idle, with misfire codes on bank 2 and intake correlation code P0...
December 29, 2009
2003 Jaguar X-Type 3.0L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: SAJEA51C43
P0300: Multiple missfire including 012356. Symptom of very rough idle and missfire during warm-up, MIL flashes upon attempting to accelerate while in park. After at least 50% warmed up engine starts to smooth out and MIL quits flashing. Cleared all codes but all return within a day or so. Engine runs w...
December 29, 2009
2003 Jeep Liberty Limited 3.7L Misfire, MIL Lamp on VIN: 1J4G148K53
P0300: Multiple Misfire Detected. The vehicle came to me with the number 3 coil split open with the insulation melting out of it. I replaced the spark plugs and the coil. The coil driver was also blown in the PCM so I replaced it with a used PCM. The car came back about a week later with the c...
December 29, 2009
2002 Saturn Vue 3.0L Misfire, MIL Lamp on VIN: 5GZCZ63B42
P0300: Random Misfire Detected. Found timing belt one tooth off on bk 1 and wrong spark plugs installed. Reset timing belt and installed correct sp plugs misfire still present under load cyl #2-4-6. Ive checked for vacum leaks w/smoke machine and fuel. Ran compresion ckecks cold and hot chec...
December 29, 2009
1998 Toyota T100 3.4L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: JT4TN14D4W
P0300: Multiple Cylinder Misfire Detected. Have this truck here for the first time. It looks like someone has put on two new oxygen sensors. It runs smooth for about 5 seconds after you start it. It immediately starts to stumble very badly and then dies. I thought maybe the cat was plugged. I put a pre...
December 29, 2009
2002 Buick Century Limited 3.1L Hesitation, Surge, Stall, Misfire, MIL Lamp on VIN: 2G4WS52J12
P0300: Engine Misfire Detected. ... century 3100 engine with MIL on, DTC P0300 random missfire. The idle is OK but will not accelerate with load or rev up on idle. I have replaced the intake gasket, had coolant mixing with oil, but still have the issue. The fuel pressure is good. When i try ...
December 30, 2009
1999 Chevrolet Lumina 3.1L Misfire, MIL Lamp on VIN: 2G1WL52M8X
P0300: Multiple Engine Misfire Detected. Car Brought In From Another Shop. They Have Replaced Coil Wires And Plugs, We Swaped Injectors And Miss Stays At Cyl 2 And 5. Miss Happens Above 2000 RPM. No Miss At Idle. Fuel Pressure 38LBS Running. Whe Miss Happens Rpm 2500, Maf 17.39, Enging Load 11%, Inje...
December 30, 2009