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P0300 Diagnostic Trouble Code Discussion for May 2005

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
1996 Plymouth Grand Voyager SE 3.0L Misfire VIN: 2P4GP4433T
P0300: Multiple Cylinder Misfire Detected. This van intermittently misfires under accel. So intermittently that it only sets a code every 1000 miles or more. All ignition compnents have been replaced. The cylinders have been decarboned using a seafoam soak ovenight followed by a bg inducion service. I ...
May 02, 2005
1997 GMC K1500 Sierra SL 5.7L Poor Idle Quality, Misfire VIN: IGTEK14R3V
P0300: Multiple Cylinder Misfire Detected. ... is a misfire on cyl. 5&7. After a few minutes, misfire changes to 1&8. I have replaced plug wires number 1 and 8, injectors 1 and 8. It threw a P1364 code. I phased distributor in, eliminated P1364 code. Still have P0300 code. Car has been checked ...
May 03, 2005
1997 Chevrolet Cavalier 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1C1JC5247V
P0300: Multiple Engine Misfire Detected. ... monday. mil on and P0300 stored. scope checked ign. found all normal. misfire data/ misfire on all cyls. alternating, LTFT at -8 STFT at -17 customer has stated that #2 fuel injector had been changed about 3 weeks prior. we do not have a 4 gas, but O2 says...
May 04, 2005
1998 Dodge Ram 1500 Truck 5.2L Poor Idle Quality, Surge, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 3B7HF12Y4W
P0300: Multiple Cylinder Misfire Detected. Hello everyone, I think I have the problem solved but would like another opinion on this. First off vehicle seems to buck alot, meaning dies right down then surges really severe. this seemed to all start after the ckp sensor was replaced, first question is can...
May 04, 2005
1996 Pontiac Firebird Formula 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2G2FV22P0T
P0300: Multiple Engine Misfire Detected. ... condition and could really use some help. Started aprox. 2 weeks ago, car needed some injectors, replaced them(#4+6) returned with a miss, and check eng light (P0300), I determined that it needed a tune up. Replaced--Cap Rotor-Plugs-Wires-Distributor-Crank...
May 04, 2005
1999 Volkswagen Jetta GL 2.0L Poor Idle Quality VIN: 3VW5C29M4X
P0300: 301 -. please help. car came in as a "someone gave me the car" car will not idle cold or accel. cold. if you add fuel it will run and accel. if i pinch the return hose it will idle. performed much needed complete tune up, didnt like f/p so i replaced the pump...
May 04, 2005
1997 Chevrolet Cavalier 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1C1JC5247V
P0300: Multiple Engine Misfire Detected. ... monday. mil on and P0300 stored. scope checked ign. found all normal. misfire data/ misfire on all cyls. alternating, LTFT at -8 STFT at -17 customer has stated that #2 fuel injector had been changed about 3 weeks prior. we do not have a 4 gas, but O2 says...
May 05, 2005
2000 Chrysler Cirrus LXi 2.5L Misfire VIN: 1C3EJ56H7Y
P0300: Multiple Cylinder Misfire Detected. Hello everyone, This car has a pretty solid miss. We did a tune-up after finding some of the plug wires arcing out. It started running better but still has a miss. Checked everything we can think of. Has good spark, good fuel pressure, pulse, and spray patter...
May 06, 2005
1999 Volkswagen Jetta GL 2.0L Poor Idle Quality VIN: 3VW5C29M4X
P0300: 301 -. please help. car came in as a "someone gave me the car" car will not idle cold or accel. cold. if you add fuel it will run and accel. if i pinch the return hose it will idle. performed much needed complete tune up, didnt like f/p so i replaced the pump...
May 07, 2005
2003 Mitsubishi Galant LS 3.0L Hesitation, Cuts out, Misfire VIN: 4A3AA46H23
P0300: Random Misfire Detected. okay this mits is giving me a fit. it missfires during acceleration, at times seems to lose power, bucks and jerks then at times it just missfires. at idle, it seems to get one or two intermittantly. now, i put a two trace scope on both upstream o2 sensors, no...
May 09, 2005
1996 Mercedes-Benz C280 2.8L MIL Lamp on VIN: WDBHA28E0T
P0300: Random Misfire. I have this mb customer complains intermittantly engine runs rough she then pulls over turns the car off restarts and runs smooth, we have not been able to duplicate the problem at this time. we have loaded the vehicle to no avail. i have read previose fixes a...
May 10, 2005
1999 Volkswagen Beetle GL 2.0L Hesitation, No power VIN: 3VWBB61C3W
P0300: Random/multiple cylinder misfire detected sporadic DTC. This vehicle experiences an extreme bog and hesitation on acceleration to the point where the car basically doesn't go anywhere. The problem is very bad when cold and tolerable when warm. We have done the following procedures with no solution... Run fault cod...
May 10, 2005
2000 Toyota Echo 1.5L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: JTDBT1238Y
P0300: Multiple Cylinder Misfire Detected. Vehicle came in with P0171 code set and long crank times. Battery went dead due to key left on and then vehicle would barely run. Vehicle acted like plugged exhaust and would not accel over 25 MPH. Cat was extremely hot. Exhaust checked for plugging; nothing f...
May 12, 2005
1999 Dodge Ram 1500 Van 5.2L MIL Lamp on VIN: 2B7HB11Y6X
P0300: Multiple Cylinder Misfire Detected. good morning, after installing plugs, wires, cap, and rotor for codes po300,302,303,306, van came back with po300 code but drove and ran good. customer said it sometimes felt like the transmission did not want to shift unless he gave it more gas. that was with...
May 13, 2005
1997 Chevrolet Tahoe 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GNEC13ROV
P0300: Multiple Cylinder Misfire Detected. Thank you for helping me with this automotive boomarang. This truck originally came in with a misfire on cyl#1 and cyl#3. Pulled the spark plugs and noted that all plugs on the right side of the engine were normal all plugs on the left side were black. Further...
May 16, 2005
1998 GMC K1500 Sierra SL 5.7L Misfire, MIL Lamp on VIN: 1GTEK19R2W
P0300: Multiple Cylinder Misfire Detected. ... on. When scanned, code P0300 random cylinder misfire came up. With Modis hooked up, I watched the misfire monitor. cylinder #5 was the culprit. The customer decided to do a major tune up.(plugs, wires, cap, rotor,and fuel filter.) After the work was perfor...
May 16, 2005
2000 Chevrolet Suburban 1500 LT 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3GNFK16T4Y
P0300: Multiple Cylinder Misfire Detected. Treat this as possible duplicate, my ISP (Comcast)dropped me when sending this help request. This truck came in with intermitten rough running complaint and customer need to leave town that night. First road test yeilded NPF, but after hot soak and restart it...
May 20, 2005
2001 Mitsubishi Eclipse Spyder GT 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 4A3AE55HX1
P0300: Random Misfire Detected. car came in with miss fire code po300 and running rough customer stated had washed engine and car ran fine after engine was washed but then about one hour later started to miss fire. we replaced spark plugs, igniton wire set new cap and rotor all factory oem p...
May 21, 2005
2001 Mazda 626 ES 2.0L Misfire, MIL Lamp on VIN: 1YVGF22C91
P0300: Random Misfire Detected. the car came in with an intermitant engine light and a code po300. we have checked secondary ign., fuel pressure, vacum and test drove several times. the car runs good all the time but once the light has come on on cold start-up with a code po300. the engine r...
May 22, 2005
2001 Chevrolet Express 3500 5.7L Misfire VIN: 1GAHG39R11
P0300: Multiple Cylinder Misfire Detected. I am posting this to ask if anyone has seen a large amount of corrosion inside these distributors. This van was in for a misfire and hard start complaint. I lifted the cap and found much green corrosion and moisture. The vent is clean except for the small amou...
May 24, 2005
2002 Chevrolet Express 1500 5.7L Cuts out VIN: 1GBFG15R4Y
P0300: Multiple Cylinder Misfire Detected. Hello ,thanks in advance.The van has no power while driving.I have made 1 road test that van dove great.If i give any gas to accel the injector pulse drops to 0.vehicle speed is correct.mass air seems ok.I have done complete tune up,cleaned maf and injectors.I...
May 24, 2005
2002 Chevrolet Express 1500 5.7L Cuts out VIN: 1GBFG15R4Y
P0300: Multiple Cylinder Misfire Detected. Hello ,thanks in advance.The van has no power while driving.I have made 1 road test that van dove great.If i give any gas to accel the injector pulse drops to 0.vehicle speed is correct.mass air seems ok.I have done complete tune up,cleaned maf and injectors.I...
May 25, 2005
1999 Chevrolet Lumina 3.1L Hesitation, Misfire, MIL Lamp on VIN: 2G1W152M7X
P0300: Multiple Engine Misfire Detected. At idle the MIL light will turn off. Miss History with scan tool: - Cyl #4 4747 & # 5 4. Freeze Frame - Load - 23% / Coolant temp - 95 C / Map (kpa) - 88 / VSS - 44 Miles / MAF - 34.85 gm/sec / TPS - 29% Appreciate any help on this one. Thanks
May 26, 2005
1999 Pontiac Grand Am SE 2.4L Poor Idle Quality VIN: 1G2NE52T5X
P0300: Multiple Cylinder Misfire Detected. ... engine light on - p0300 Random Misfire. Installed scan tool, went to misfire information, intermitiant misfire on cylinder # four, only misfires at idle. Replaced all the numerous parts listed above. Removed timing chain cover and verified timing was fine....
May 26, 2005
2001 Pontiac Sunfire SE 2.2L Hesitation, Cuts out, Misfire VIN: 3G2JB12461
P0300: Multiple Engine Misfire Detected. ... serious help here. I have a Pontiac here that I am very close to lighting a match in the gas tank. This car came to me from one of my best friends moms and I am doing this from home, something that I never do but I owe this guy a favor. I should have just ...
May 29, 2005
2001 Pontiac Sunfire SE 2.2L Hesitation, Cuts out, Misfire VIN: 3G2JB12461
P0300: Multiple Engine Misfire Detected. ... serious help here. I have a Pontiac here that I am very close to lighting a match in the gas tank. This car came to me from one of my best friends moms and I am doing this from home, something that I never do but I owe this guy a favor. I should have just ...
May 30, 2005
1996 Plymouth Grand Voyager SE 3.0L Misfire VIN: 2P4GP4433T
P0300: Multiple Cylinder Misfire Detected. This van intermittently misfires under accel. So intermittently that it only sets a code every 1000 miles or more. All ignition compnents have been replaced. The cylinders have been decarboned using a seafoam soak ovenight followed by a bg inducion service. I ...
May 02, 2005
1997 GMC K1500 Sierra SL 5.7L Poor Idle Quality, Misfire VIN: IGTEK14R3V
P0300: Multiple Cylinder Misfire Detected. ... is a misfire on cyl. 5&7. After a few minutes, misfire changes to 1&8. I have replaced plug wires number 1 and 8, injectors 1 and 8. It threw a P1364 code. I phased distributor in, eliminated P1364 code. Still have P0300 code. Car has been checked ...
May 03, 2005
1997 Chevrolet Cavalier 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1C1JC5247V
P0300: Multiple Engine Misfire Detected. ... monday. mil on and P0300 stored. scope checked ign. found all normal. misfire data/ misfire on all cyls. alternating, LTFT at -8 STFT at -17 customer has stated that #2 fuel injector had been changed about 3 weeks prior. we do not have a 4 gas, but O2 says...
May 04, 2005
1998 Dodge Ram 1500 Truck 5.2L Poor Idle Quality, Surge, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 3B7HF12Y4W
P0300: Multiple Cylinder Misfire Detected. Hello everyone, I think I have the problem solved but would like another opinion on this. First off vehicle seems to buck alot, meaning dies right down then surges really severe. this seemed to all start after the ckp sensor was replaced, first question is can...
May 04, 2005
1996 Pontiac Firebird Formula 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2G2FV22P0T
P0300: Multiple Engine Misfire Detected. ... condition and could really use some help. Started aprox. 2 weeks ago, car needed some injectors, replaced them(#4+6) returned with a miss, and check eng light (P0300), I determined that it needed a tune up. Replaced--Cap Rotor-Plugs-Wires-Distributor-Crank...
May 04, 2005
1999 Volkswagen Jetta GL 2.0L Poor Idle Quality VIN: 3VW5C29M4X
P0300: 301 -. please help. car came in as a "someone gave me the car" car will not idle cold or accel. cold. if you add fuel it will run and accel. if i pinch the return hose it will idle. performed much needed complete tune up, didnt like f/p so i replaced the pump...
May 04, 2005
1997 Chevrolet Cavalier 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1C1JC5247V
P0300: Multiple Engine Misfire Detected. ... monday. mil on and P0300 stored. scope checked ign. found all normal. misfire data/ misfire on all cyls. alternating, LTFT at -8 STFT at -17 customer has stated that #2 fuel injector had been changed about 3 weeks prior. we do not have a 4 gas, but O2 says...
May 05, 2005
2000 Chrysler Cirrus LXi 2.5L Misfire VIN: 1C3EJ56H7Y
P0300: Multiple Cylinder Misfire Detected. Hello everyone, This car has a pretty solid miss. We did a tune-up after finding some of the plug wires arcing out. It started running better but still has a miss. Checked everything we can think of. Has good spark, good fuel pressure, pulse, and spray patter...
May 06, 2005
1999 Volkswagen Jetta GL 2.0L Poor Idle Quality VIN: 3VW5C29M4X
P0300: 301 -. please help. car came in as a "someone gave me the car" car will not idle cold or accel. cold. if you add fuel it will run and accel. if i pinch the return hose it will idle. performed much needed complete tune up, didnt like f/p so i replaced the pump...
May 07, 2005
2003 Mitsubishi Galant LS 3.0L Hesitation, Cuts out, Misfire VIN: 4A3AA46H23
P0300: Random Misfire Detected. okay this mits is giving me a fit. it missfires during acceleration, at times seems to lose power, bucks and jerks then at times it just missfires. at idle, it seems to get one or two intermittantly. now, i put a two trace scope on both upstream o2 sensors, no...
May 09, 2005
1996 Mercedes-Benz C280 2.8L MIL Lamp on VIN: WDBHA28E0T
P0300: Random Misfire. I have this mb customer complains intermittantly engine runs rough she then pulls over turns the car off restarts and runs smooth, we have not been able to duplicate the problem at this time. we have loaded the vehicle to no avail. i have read previose fixes a...
May 10, 2005
1999 Volkswagen Beetle GL 2.0L Hesitation, No power VIN: 3VWBB61C3W
P0300: Random/multiple cylinder misfire detected sporadic DTC. This vehicle experiences an extreme bog and hesitation on acceleration to the point where the car basically doesn't go anywhere. The problem is very bad when cold and tolerable when warm. We have done the following procedures with no solution... Run fault cod...
May 10, 2005
2000 Toyota Echo 1.5L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: JTDBT1238Y
P0300: Multiple Cylinder Misfire Detected. Vehicle came in with P0171 code set and long crank times. Battery went dead due to key left on and then vehicle would barely run. Vehicle acted like plugged exhaust and would not accel over 25 MPH. Cat was extremely hot. Exhaust checked for plugging; nothing f...
May 12, 2005
1999 Dodge Ram 1500 Van 5.2L MIL Lamp on VIN: 2B7HB11Y6X
P0300: Multiple Cylinder Misfire Detected. good morning, after installing plugs, wires, cap, and rotor for codes po300,302,303,306, van came back with po300 code but drove and ran good. customer said it sometimes felt like the transmission did not want to shift unless he gave it more gas. that was with...
May 13, 2005
1997 Chevrolet Tahoe 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GNEC13ROV
P0300: Multiple Cylinder Misfire Detected. Thank you for helping me with this automotive boomarang. This truck originally came in with a misfire on cyl#1 and cyl#3. Pulled the spark plugs and noted that all plugs on the right side of the engine were normal all plugs on the left side were black. Further...
May 16, 2005
1998 GMC K1500 Sierra SL 5.7L Misfire, MIL Lamp on VIN: 1GTEK19R2W
P0300: Multiple Cylinder Misfire Detected. ... on. When scanned, code P0300 random cylinder misfire came up. With Modis hooked up, I watched the misfire monitor. cylinder #5 was the culprit. The customer decided to do a major tune up.(plugs, wires, cap, rotor,and fuel filter.) After the work was perfor...
May 16, 2005
2000 Chevrolet Suburban 1500 LT 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3GNFK16T4Y
P0300: Multiple Cylinder Misfire Detected. Treat this as possible duplicate, my ISP (Comcast)dropped me when sending this help request. This truck came in with intermitten rough running complaint and customer need to leave town that night. First road test yeilded NPF, but after hot soak and restart it...
May 20, 2005
2001 Mitsubishi Eclipse Spyder GT 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 4A3AE55HX1
P0300: Random Misfire Detected. car came in with miss fire code po300 and running rough customer stated had washed engine and car ran fine after engine was washed but then about one hour later started to miss fire. we replaced spark plugs, igniton wire set new cap and rotor all factory oem p...
May 21, 2005
2001 Mazda 626 ES 2.0L Misfire, MIL Lamp on VIN: 1YVGF22C91
P0300: Random Misfire Detected. the car came in with an intermitant engine light and a code po300. we have checked secondary ign., fuel pressure, vacum and test drove several times. the car runs good all the time but once the light has come on on cold start-up with a code po300. the engine r...
May 22, 2005
2001 Chevrolet Express 3500 5.7L Misfire VIN: 1GAHG39R11
P0300: Multiple Cylinder Misfire Detected. I am posting this to ask if anyone has seen a large amount of corrosion inside these distributors. This van was in for a misfire and hard start complaint. I lifted the cap and found much green corrosion and moisture. The vent is clean except for the small amou...
May 24, 2005
2002 Chevrolet Express 1500 5.7L Cuts out VIN: 1GBFG15R4Y
P0300: Multiple Cylinder Misfire Detected. Hello ,thanks in advance.The van has no power while driving.I have made 1 road test that van dove great.If i give any gas to accel the injector pulse drops to 0.vehicle speed is correct.mass air seems ok.I have done complete tune up,cleaned maf and injectors.I...
May 24, 2005
2002 Chevrolet Express 1500 5.7L Cuts out VIN: 1GBFG15R4Y
P0300: Multiple Cylinder Misfire Detected. Hello ,thanks in advance.The van has no power while driving.I have made 1 road test that van dove great.If i give any gas to accel the injector pulse drops to 0.vehicle speed is correct.mass air seems ok.I have done complete tune up,cleaned maf and injectors.I...
May 25, 2005
1999 Chevrolet Lumina 3.1L Hesitation, Misfire, MIL Lamp on VIN: 2G1W152M7X
P0300: Multiple Engine Misfire Detected. At idle the MIL light will turn off. Miss History with scan tool: - Cyl #4 4747 & # 5 4. Freeze Frame - Load - 23% / Coolant temp - 95 C / Map (kpa) - 88 / VSS - 44 Miles / MAF - 34.85 gm/sec / TPS - 29% Appreciate any help on this one. Thanks
May 26, 2005
1999 Pontiac Grand Am SE 2.4L Poor Idle Quality VIN: 1G2NE52T5X
P0300: Multiple Cylinder Misfire Detected. ... engine light on - p0300 Random Misfire. Installed scan tool, went to misfire information, intermitiant misfire on cylinder # four, only misfires at idle. Replaced all the numerous parts listed above. Removed timing chain cover and verified timing was fine....
May 26, 2005
2001 Pontiac Sunfire SE 2.2L Hesitation, Cuts out, Misfire VIN: 3G2JB12461
P0300: Multiple Engine Misfire Detected. ... serious help here. I have a Pontiac here that I am very close to lighting a match in the gas tank. This car came to me from one of my best friends moms and I am doing this from home, something that I never do but I owe this guy a favor. I should have just ...
May 29, 2005
2001 Pontiac Sunfire SE 2.2L Hesitation, Cuts out, Misfire VIN: 3G2JB12461
P0300: Multiple Engine Misfire Detected. ... serious help here. I have a Pontiac here that I am very close to lighting a match in the gas tank. This car came to me from one of my best friends moms and I am doing this from home, something that I never do but I owe this guy a favor. I should have just ...
May 30, 2005