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P0300 Diagnostic Trouble Code Discussion for December 2012

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2005 Chevrolet Aveo LS 1.6L Poor Idle Quality VIN: KL1TD52665
P0300: Engine Misfire Detected. Thanks for your help. I thought we had this one fixed but wrong again. This car came to us through the auction. It has a slightly rolling idle (2 to 3 cycles per second +/-25 rpm) with random skips in neutral. Idle in drive is pretty solid with occasional skip...
December 03, 2012
1999 Honda Accord LX 2.3L Misfire VIN: JHMCG5647X
P0300: Multiple Misfire Detected. This vehicle is very intermittant it occurs only on rare occasions missing and running rough to the point that it feels like a defective fuel pump or a restricted convertor because it loses power and surges heavily, i have replaced the wires,cap,rotor,plugs,iv...
December 05, 2012
2001 Chevrolet Astro LS 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNDM19W81
P0300: Multiple Cylinder Misfire Detected. This post is for a friend. There is a misfire on cylinder #4 @ about 1500 r.p.m. & under a load. Cylinder #2 also has some misfires, but #4 is the greatest. The problem was already there before any of the above work was done, but nothing seems to fix it. ...
December 06, 2012
2008 Acura TL 3.2L No Start, Stall VIN: 19UUA66268
P0300: Random misfire. Vehicle died while driving, ck eng light came on. Would not start. Fuel pump is operating, we have spark but no fuel. It appears injectors are not functioning. When spraying into them, car starts up and idles fine. When turning key on, just cranks (even when r...
December 08, 2012
2002 Chevrolet Astro LS 4.3L No Start, Hesitation, Stall, Misfire, MIL Lamp on VIN: 1GNDM19X42
P0300: Multiple Cylinder Misfire Detected. ... it dies when it gets close to operating temperature. Got DTC p0300 random misfire. Swapped ignition coil, ignition module, and ckp sensor with known good and problem still remains. Monitored cmp sensor waveform on a scope and it looks normal(no blips-fairl...
December 13, 2012
2000 Pontiac Grand Prix GT 3.8L Poor Idle Quality, Surge, Misfire VIN: 1G2WP52K8Y
P0300: Engine Misfire Detected. ... running very rough when owner got out of work each day. Seems to be more prevalent when cold burt we seem to have had the issue when warmed up also. When car starts running very poorly, heavy missfires on cylinders 1 and 2 when this problem occures. The ox...
December 13, 2012
1999 Mitsubishi Galant ES 3.0L Misfire, MIL Lamp on VIN: 4A3AA46L8X
P0300: Random Misfire Detected. ... time when customer had a mil on. Months later now he tried smoging and has p0300 code. He asked for advise and he said it ran great which i drove and it ran good with no misfires. I found tsb related to code p0300 and needed reflash, so he took car to deal...
December 14, 2012
2000 Pontiac Grand Prix GT 3.8L Poor Idle Quality, Surge, Misfire VIN: 1G2WP52K8Y
P0300: Engine Misfire Detected. ... running very rough when owner got out of work each day. Seems to be more prevalent when cold burt we seem to have had the issue when warmed up also. When car starts running very poorly, heavy missfires on cylinders 1 and 2 when this problem occures. The ox...
December 14, 2012
2008 GMC Acadia SLT 3.6L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1GKEV33798
P0300: Engine misfire detected. customer called saying the vehicle has no power and hesitating. -drove home and the next day, it started up fine and drove here to the shop -the codes were stored in the history of ECM -drives fine, but seems to be intermittent -replaced water pump and thermos...
December 17, 2012
2000 Volkswagen Jetta GLS 2.0L no cruise VIN: 3VWSC29M6Y
P0300: needs wires and plugs. Checked all fuses, under measuring block 066 Switch 1 shows 1000 switch at res and applying brake can see 1110, then switch 2 shows 0011 thats off right, and no difference with moving switch.I also read switch has no voltage till 19 mph. No codes for cruise. T...
December 19, 2012
2000 Volkswagen Jetta GLS 2.0L no cruise VIN: 3VWSC29M6Y
P0300: needs wires and plugs. Checked all fuses, under measuring block 066 Switch 1 shows 1000 switch at res and applying brake can see 1110, then switch 2 shows 0011 thats off right, and no difference with moving switch.I also read switch has no voltage till 19 mph. No codes for cruise. T...
December 20, 2012
2007 Chevrolet Aveo LS 1.6L Misfire, MIL Lamp on VIN: KL1TD56647
P0300: Engine Misfire Detected. We have misfire codes set when driving under load at freeway speeds or heavy acceleration or possible deceleration after the heavy accel. When misfire codes set the engine runs fine and still has steady power. The scanner shows same amount of misfires on both ...
December 21, 2012
2004 Chevrolet Express 2500 4.8L Misfire
P0300: Multiple Cylinder Misfire Detected. ... suggestions on this van, custs complaint light blinks after driving on highway for a while. sure enough drive @ highway speeds usually 70 mph check engine light blinks. whats odd is you can't feel mis. check codes p0300 random m...
December 26, 2012
2000 Nissan Frontier SE 3.3L Poor Idle Quality, Misfire VIN: 1N6ED27T5Y
P0300: Multiple Misfire Detected. ... beginning there was slight roughness in idle, we just let it go, customer never complain until know , but now check engine light comes on with codes p0300 and p0325. And idle is realy bad now!!crank. Sensor is good , install...
December 26, 2012
2004 Chevrolet Express 2500 4.8L Misfire
P0300: Multiple Cylinder Misfire Detected. ... suggestions on this van, custs complaint light blinks after driving on highway for a while. sure enough drive @ highway speeds usually 70 mph check engine light blinks. whats odd is you can't feel mis. check codes p0300 random m...
December 27, 2012
2002 Audi A6 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on, VIN: WAUJT64B72
P0300: random misfire. Car came in running rough with misfire codes. My gut told me to pull the plug off the mass airflow meter and the car immediately smoothed out. Plugged back in and it kept running smooth. Road test and parked until new Maf. Went to pull back in and running bad ...
December 28, 2012
2001 Lexus GS300 3.0L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: JT8BD69S51
P0300: Multiple Cylinder Misfire Detected. Hey guys, I could really use your help here- this car is giving me a problem. I have inherited this car- I wasn't the tech initially involved. This car is from our dealer used lot. Car was brought to us for the CEL being on. Apparently the initial codes were...
December 28, 2012
2005 Chevrolet Aveo LS 1.6L Poor Idle Quality VIN: KL1TD52665
P0300: Engine Misfire Detected. Thanks for your help. I thought we had this one fixed but wrong again. This car came to us through the auction. It has a slightly rolling idle (2 to 3 cycles per second +/-25 rpm) with random skips in neutral. Idle in drive is pretty solid with occasional skip...
December 03, 2012
1999 Honda Accord LX 2.3L Misfire VIN: JHMCG5647X
P0300: Multiple Misfire Detected. This vehicle is very intermittant it occurs only on rare occasions missing and running rough to the point that it feels like a defective fuel pump or a restricted convertor because it loses power and surges heavily, i have replaced the wires,cap,rotor,plugs,iv...
December 05, 2012
2001 Chevrolet Astro LS 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNDM19W81
P0300: Multiple Cylinder Misfire Detected. This post is for a friend. There is a misfire on cylinder #4 @ about 1500 r.p.m. & under a load. Cylinder #2 also has some misfires, but #4 is the greatest. The problem was already there before any of the above work was done, but nothing seems to fix it. ...
December 06, 2012
2008 Acura TL 3.2L No Start, Stall VIN: 19UUA66268
P0300: Random misfire. Vehicle died while driving, ck eng light came on. Would not start. Fuel pump is operating, we have spark but no fuel. It appears injectors are not functioning. When spraying into them, car starts up and idles fine. When turning key on, just cranks (even when r...
December 08, 2012
2002 Chevrolet Astro LS 4.3L No Start, Hesitation, Stall, Misfire, MIL Lamp on VIN: 1GNDM19X42
P0300: Multiple Cylinder Misfire Detected. ... it dies when it gets close to operating temperature. Got DTC p0300 random misfire. Swapped ignition coil, ignition module, and ckp sensor with known good and problem still remains. Monitored cmp sensor waveform on a scope and it looks normal(no blips-fairl...
December 13, 2012
2000 Pontiac Grand Prix GT 3.8L Poor Idle Quality, Surge, Misfire VIN: 1G2WP52K8Y
P0300: Engine Misfire Detected. ... running very rough when owner got out of work each day. Seems to be more prevalent when cold burt we seem to have had the issue when warmed up also. When car starts running very poorly, heavy missfires on cylinders 1 and 2 when this problem occures. The ox...
December 13, 2012
1999 Mitsubishi Galant ES 3.0L Misfire, MIL Lamp on VIN: 4A3AA46L8X
P0300: Random Misfire Detected. ... time when customer had a mil on. Months later now he tried smoging and has p0300 code. He asked for advise and he said it ran great which i drove and it ran good with no misfires. I found tsb related to code p0300 and needed reflash, so he took car to deal...
December 14, 2012
2000 Pontiac Grand Prix GT 3.8L Poor Idle Quality, Surge, Misfire VIN: 1G2WP52K8Y
P0300: Engine Misfire Detected. ... running very rough when owner got out of work each day. Seems to be more prevalent when cold burt we seem to have had the issue when warmed up also. When car starts running very poorly, heavy missfires on cylinders 1 and 2 when this problem occures. The ox...
December 14, 2012
2008 GMC Acadia SLT 3.6L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1GKEV33798
P0300: Engine misfire detected. customer called saying the vehicle has no power and hesitating. -drove home and the next day, it started up fine and drove here to the shop -the codes were stored in the history of ECM -drives fine, but seems to be intermittent -replaced water pump and thermos...
December 17, 2012
2000 Volkswagen Jetta GLS 2.0L no cruise VIN: 3VWSC29M6Y
P0300: needs wires and plugs. Checked all fuses, under measuring block 066 Switch 1 shows 1000 switch at res and applying brake can see 1110, then switch 2 shows 0011 thats off right, and no difference with moving switch.I also read switch has no voltage till 19 mph. No codes for cruise. T...
December 19, 2012
2000 Volkswagen Jetta GLS 2.0L no cruise VIN: 3VWSC29M6Y
P0300: needs wires and plugs. Checked all fuses, under measuring block 066 Switch 1 shows 1000 switch at res and applying brake can see 1110, then switch 2 shows 0011 thats off right, and no difference with moving switch.I also read switch has no voltage till 19 mph. No codes for cruise. T...
December 20, 2012
2007 Chevrolet Aveo LS 1.6L Misfire, MIL Lamp on VIN: KL1TD56647
P0300: Engine Misfire Detected. We have misfire codes set when driving under load at freeway speeds or heavy acceleration or possible deceleration after the heavy accel. When misfire codes set the engine runs fine and still has steady power. The scanner shows same amount of misfires on both ...
December 21, 2012
2004 Chevrolet Express 2500 4.8L Misfire
P0300: Multiple Cylinder Misfire Detected. ... suggestions on this van, custs complaint light blinks after driving on highway for a while. sure enough drive @ highway speeds usually 70 mph check engine light blinks. whats odd is you can't feel mis. check codes p0300 random m...
December 26, 2012
2000 Nissan Frontier SE 3.3L Poor Idle Quality, Misfire VIN: 1N6ED27T5Y
P0300: Multiple Misfire Detected. ... beginning there was slight roughness in idle, we just let it go, customer never complain until know , but now check engine light comes on with codes p0300 and p0325. And idle is realy bad now!!crank. Sensor is good , install...
December 26, 2012
2004 Chevrolet Express 2500 4.8L Misfire
P0300: Multiple Cylinder Misfire Detected. ... suggestions on this van, custs complaint light blinks after driving on highway for a while. sure enough drive @ highway speeds usually 70 mph check engine light blinks. whats odd is you can't feel mis. check codes p0300 random m...
December 27, 2012
2002 Audi A6 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on, VIN: WAUJT64B72
P0300: random misfire. Car came in running rough with misfire codes. My gut told me to pull the plug off the mass airflow meter and the car immediately smoothed out. Plugged back in and it kept running smooth. Road test and parked until new Maf. Went to pull back in and running bad ...
December 28, 2012
2001 Lexus GS300 3.0L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: JT8BD69S51
P0300: Multiple Cylinder Misfire Detected. Hey guys, I could really use your help here- this car is giving me a problem. I have inherited this car- I wasn't the tech initially involved. This car is from our dealer used lot. Car was brought to us for the CEL being on. Apparently the initial codes were...
December 28, 2012