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P0300 Diagnostic Trouble Code Discussion for January 2005

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
1999 Chrysler 300M 3.5L Cuts out VIN: 2C3HE66G6X
P0300: Multiple Cylinder Misfire Detected. Good friends car, and he claims it has cut out about 5 times in the last month...all 5 times he was driving on the freeway...after sitting for anywhere from 15 min's to a half hour, it will restart and he can continue driving without a problem...he claims he t...
January 03, 2005
1998 Chevrolet Malibu LS 3.1L Misfire, MIL Lamp on VIN: 1G1NE52M7W
P0300: Multiple Cylinder Misfire Detected. this vehicle is exhibiting random misfires on all cylinders (particularly at idle) on scan data. I've read that these engines have many problems with the injectors so we attempted to flush them several time with no change at all. if any one has any suggestions...
January 04, 2005
1999 Chevrolet Malibu 3.1L Poor Idle Quality, MIL Lamp on VIN: 1G1ND52J0X
P0300: Multiple Cylinder Misfire Detected. I'm positng for another shop on this random misfire. A MotorVac was done by the local dealer, with no change. Dealer claimed excessive carbon contamination. This shop pulled the heads and found them to be clean. I believe the plugs, wires and fuel filter have ...
January 04, 2005
2000 Ford E-150 Econoline 4.6L Hesitation, Surge, Misfire, MIL Lamp on VIN: 1FIRE14W0Y
P0300: Multiple random misfire. This vehicle came back to us with a p0302 code. See previous repair history. We rechecked all the plugs and the boots (COP ignition system). The boots were cracked so we changed them, made no difference. We swapped coils and injectors around and still no diffe...
January 04, 2005
1996 Chevrolet Blazer 4.3L Hesitation, Misfire VIN: 1GNDT13W8T
P0300: Multiple Cylinder Misfire Detected. Can't seem to figure this one out. Customer states that around 65-70 mph it will misfire and stumble. Freezframe data shows largest miss of cyl #5 the rest are less than 20. This has a linear EGR and no code for it so that isn't sticking. All of the repair his...
January 07, 2005
2001 Mercedes-Benz SL600 6.0L Misfire, MIL Lamp on VIN: WDBFA76F81
P0300: Misfiring. Good Morning, This big Mercedes is being a difficult fix. The customer brougt me this car for service, tires and a complaint that "it won't go over 120mph." MIL was on so the first thing I did was clear all the missfire codes and take it for a road ...
January 11, 2005
1996 Jeep Grand Cherokee Laredo 4.0L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1J4EZ58S0T
P0300: Multiple Cylinder Misfire Detected. ... intermittantly during low speed driving. Bucks, misfires, loses power, dies becomes hard to start & sets P0351. Feels very much like ignition problem. I thought the coil would nail it but alas no. I have visuallyinspected and ...
January 12, 2005
1997 Chevrolet Express 2500 5.0L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCFG25M5T
P0300: Multiple Cylinder Misfire Detected. Fist problem was miss under load,ignition parts oe and cooked.complete tune up fixed.2000k later shows up smokin oil and missing.A/f ratio perfect,stays in open loop,o2 reading stays at 460 even when I try to change it.Thought press. reg. at first because this...
January 13, 2005
2002 Chevrolet Tahoe LS 5.3L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GNEK13Z62
P0300: Multiple Cylinder Misfire Detected. Hello, this tahoe is running like crap. it acts like a egr problem. I cant find a egr valve on it. bank #2 is almost totally dead. i have fuel trim readings of -15 on bank # 2 and +10 on bank #1 all indications piont towardssome kind of vacuum leak. Are there ...
January 13, 2005
2001 Mercedes-Benz SL600 6.0L Misfire, MIL Lamp on VIN: WDBFA76F81
P0300: Misfiring. Good Morning, This big Mercedes is being a difficult fix. The customer brougt me this car for service, tires and a complaint that "it won't go over 120mph." MIL was on so the first thing I did was clear all the missfire codes and take it for a road ...
January 13, 2005
1999 Chevrolet Astro 4.3L Surge, Misfire, MIL Lamp on VIN: 1GNDM19W8X
P0300: Multiple Cylinder Misfire Detected. Customer has brought van in 3 differnt times, complaining of shudder/misfire at highway speeds (freeze frame shows 56-60 mph)usually first drive of the morning. The only obvious data that shows out of range is the cam retard- Scanner shows -16 degrees. Once co...
January 14, 2005
1997 Mazda 626 LX 2.5L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1YVGE22D5V
P0300: Random Misfire Detected. check engine light on steady,cleared codes and po300 came back and will not clear or comes back right away.also very noisy top end (valve train,timing belt area.?
January 15, 2005
1999 Chevrolet Astro 4.3L Surge, Misfire, MIL Lamp on VIN: 1GNDM19W8X
P0300: Multiple Cylinder Misfire Detected. Customer has brought van in 3 differnt times, complaining of shudder/misfire at highway speeds (freeze frame shows 56-60 mph)usually first drive of the morning. The only obvious data that shows out of range is the cam retard- Scanner shows -16 degrees. Once co...
January 18, 2005
2001 Chevrolet Silverado 1500 4.3L No Start, Cuts out, MIL Lamp on VIN: 2GCEC19W21
P0300: Multiple Cylinder Misfire Detected. customer complained of hard start hot or cold,misfire or buck at highway speeds intermittantly.performed tune up service. customer returned with same complaint. retrieved fault codes po300. noticed scan data indicating cam offset at -11 degrees. performed cran...
January 18, 2005
2001 Saturn SL1 1.9L Misfire, MIL Lamp on VIN: 1G8ZH52821
P0300: Random Misfire Detected. replaced plugs,wires.Hear popping sound thru exhaust. No hard miss. Possible fuel mixture miss? Any encounter of any kind on this? any help appreciated
January 18, 2005
1997 Chevrolet Malibu LS 3.1L gauges and codes VIN: 1G1NE52M5V
P0300: Multiple Cylinder Misfire Detected. gotta hot 1 ,,,any help would be greatly appreciated this car came in last july,, abs light on,, brake light on , temp gauge not working and battery light on. plus key chime and ac not working,,,tried to get codes no communication, measured voltage at ign swi...
January 19, 2005
2001 Chevrolet Tahoe 5.3L Misfire, MIL Lamp on VIN: 1GNEK13Z82
P0300: Multiple Cylinder Misfire Detected. ... tahoe in last week and it had p0300 and idled rough looked at misfire data and only injectors that were ok were 3&8 the others had misfires inthe thousands///i cleaned the injececters with the fuel rail looped//with bg cleaner and it ran alot better an...
January 20, 2005
1997 Chevrolet K1500 Cheyenne 5.7L MIL Lamp on VIN: 2GCEK19R7V
P0300: Multiple Cylinder Misfire Detected. this vehicle was in our shop 1yr ago and replace engine with jasper reman came back few weeks later and found bad #7 and #8 injectors - replaced injectors - came back 1 month later and found #5 injector weak - had miss fires and those cylinders - truck came ba...
January 21, 2005
1996 Chevrolet S10 LS 4.3L Cuts out, Misfire, Poor Fuel Economy VIN: 1GCCS19X3T
P0300: Multiple Engine Misfire Detected. thanks for all the help in advance. the problems started approximately 6 month ago. we replaced the injectors and fuel pressure regulator and plugs and cleaned egr valve. 2 months later back again same problem flooding... same thing over again...injectors, pre...
January 25, 2005
1997 Chevrolet K1500 Cheyenne 5.7L MIL Lamp on VIN: 2GCEK19R7V
P0300: Multiple Cylinder Misfire Detected. this vehicle was in our shop 1yr ago and replace engine with jasper reman came back few weeks later and found bad #7 and #8 injectors - replaced injectors - came back 1 month later and found #5 injector weak - had miss fires and those cylinders - truck came ba...
January 26, 2005
1996 Chevrolet Corsica 3.1L No Start, Misfire VIN: 1G1LD55M4T
P0300: Multiple Engine Misfire Detected. car towed in no start. Bad fuel smell oil diluted with gas. Removed fouled plugs and replaced with new delco plugs. changed oil and filter. car would barely start and only for a second when held in wot flood mode and would run bad and stall after 15 seconds. s...
January 31, 2005
2003 Dodge Ram 1500 Truck 4.7L MIL Lamp on VIN: 1D7HU16N13
P0300: Multiple Cylinder Misfire Detected. This truck has been here three times for misfire codes. Different cylinders each time but always a code PO300. I can watch the misfire numbers climb on all cylinders if I run the engine at 1000 RPM in nuetral hot engine. I have not tried it cold. All the freez...
January 31, 2005
1999 Chrysler 300M 3.5L Cuts out VIN: 2C3HE66G6X
P0300: Multiple Cylinder Misfire Detected. Good friends car, and he claims it has cut out about 5 times in the last month...all 5 times he was driving on the freeway...after sitting for anywhere from 15 min's to a half hour, it will restart and he can continue driving without a problem...he claims he t...
January 03, 2005
1998 Chevrolet Malibu LS 3.1L Misfire, MIL Lamp on VIN: 1G1NE52M7W
P0300: Multiple Cylinder Misfire Detected. this vehicle is exhibiting random misfires on all cylinders (particularly at idle) on scan data. I've read that these engines have many problems with the injectors so we attempted to flush them several time with no change at all. if any one has any suggestions...
January 04, 2005
1999 Chevrolet Malibu 3.1L Poor Idle Quality, MIL Lamp on VIN: 1G1ND52J0X
P0300: Multiple Cylinder Misfire Detected. I'm positng for another shop on this random misfire. A MotorVac was done by the local dealer, with no change. Dealer claimed excessive carbon contamination. This shop pulled the heads and found them to be clean. I believe the plugs, wires and fuel filter have ...
January 04, 2005
2000 Ford E-150 Econoline 4.6L Hesitation, Surge, Misfire, MIL Lamp on VIN: 1FIRE14W0Y
P0300: Multiple random misfire. This vehicle came back to us with a p0302 code. See previous repair history. We rechecked all the plugs and the boots (COP ignition system). The boots were cracked so we changed them, made no difference. We swapped coils and injectors around and still no diffe...
January 04, 2005
1996 Chevrolet Blazer 4.3L Hesitation, Misfire VIN: 1GNDT13W8T
P0300: Multiple Cylinder Misfire Detected. Can't seem to figure this one out. Customer states that around 65-70 mph it will misfire and stumble. Freezframe data shows largest miss of cyl #5 the rest are less than 20. This has a linear EGR and no code for it so that isn't sticking. All of the repair his...
January 07, 2005
2001 Mercedes-Benz SL600 6.0L Misfire, MIL Lamp on VIN: WDBFA76F81
P0300: Misfiring. Good Morning, This big Mercedes is being a difficult fix. The customer brougt me this car for service, tires and a complaint that "it won't go over 120mph." MIL was on so the first thing I did was clear all the missfire codes and take it for a road ...
January 11, 2005
1996 Jeep Grand Cherokee Laredo 4.0L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1J4EZ58S0T
P0300: Multiple Cylinder Misfire Detected. ... intermittantly during low speed driving. Bucks, misfires, loses power, dies becomes hard to start & sets P0351. Feels very much like ignition problem. I thought the coil would nail it but alas no. I have visuallyinspected and ...
January 12, 2005
1997 Chevrolet Express 2500 5.0L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCFG25M5T
P0300: Multiple Cylinder Misfire Detected. Fist problem was miss under load,ignition parts oe and cooked.complete tune up fixed.2000k later shows up smokin oil and missing.A/f ratio perfect,stays in open loop,o2 reading stays at 460 even when I try to change it.Thought press. reg. at first because this...
January 13, 2005
2002 Chevrolet Tahoe LS 5.3L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GNEK13Z62
P0300: Multiple Cylinder Misfire Detected. Hello, this tahoe is running like crap. it acts like a egr problem. I cant find a egr valve on it. bank #2 is almost totally dead. i have fuel trim readings of -15 on bank # 2 and +10 on bank #1 all indications piont towardssome kind of vacuum leak. Are there ...
January 13, 2005
2001 Mercedes-Benz SL600 6.0L Misfire, MIL Lamp on VIN: WDBFA76F81
P0300: Misfiring. Good Morning, This big Mercedes is being a difficult fix. The customer brougt me this car for service, tires and a complaint that "it won't go over 120mph." MIL was on so the first thing I did was clear all the missfire codes and take it for a road ...
January 13, 2005
1999 Chevrolet Astro 4.3L Surge, Misfire, MIL Lamp on VIN: 1GNDM19W8X
P0300: Multiple Cylinder Misfire Detected. Customer has brought van in 3 differnt times, complaining of shudder/misfire at highway speeds (freeze frame shows 56-60 mph)usually first drive of the morning. The only obvious data that shows out of range is the cam retard- Scanner shows -16 degrees. Once co...
January 14, 2005
1997 Mazda 626 LX 2.5L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1YVGE22D5V
P0300: Random Misfire Detected. check engine light on steady,cleared codes and po300 came back and will not clear or comes back right away.also very noisy top end (valve train,timing belt area.?
January 15, 2005
1999 Chevrolet Astro 4.3L Surge, Misfire, MIL Lamp on VIN: 1GNDM19W8X
P0300: Multiple Cylinder Misfire Detected. Customer has brought van in 3 differnt times, complaining of shudder/misfire at highway speeds (freeze frame shows 56-60 mph)usually first drive of the morning. The only obvious data that shows out of range is the cam retard- Scanner shows -16 degrees. Once co...
January 18, 2005
2001 Chevrolet Silverado 1500 4.3L No Start, Cuts out, MIL Lamp on VIN: 2GCEC19W21
P0300: Multiple Cylinder Misfire Detected. customer complained of hard start hot or cold,misfire or buck at highway speeds intermittantly.performed tune up service. customer returned with same complaint. retrieved fault codes po300. noticed scan data indicating cam offset at -11 degrees. performed cran...
January 18, 2005
2001 Saturn SL1 1.9L Misfire, MIL Lamp on VIN: 1G8ZH52821
P0300: Random Misfire Detected. replaced plugs,wires.Hear popping sound thru exhaust. No hard miss. Possible fuel mixture miss? Any encounter of any kind on this? any help appreciated
January 18, 2005
1997 Chevrolet Malibu LS 3.1L gauges and codes VIN: 1G1NE52M5V
P0300: Multiple Cylinder Misfire Detected. gotta hot 1 ,,,any help would be greatly appreciated this car came in last july,, abs light on,, brake light on , temp gauge not working and battery light on. plus key chime and ac not working,,,tried to get codes no communication, measured voltage at ign swi...
January 19, 2005
2001 Chevrolet Tahoe 5.3L Misfire, MIL Lamp on VIN: 1GNEK13Z82
P0300: Multiple Cylinder Misfire Detected. ... tahoe in last week and it had p0300 and idled rough looked at misfire data and only injectors that were ok were 3&8 the others had misfires inthe thousands///i cleaned the injececters with the fuel rail looped//with bg cleaner and it ran alot better an...
January 20, 2005
1997 Chevrolet K1500 Cheyenne 5.7L MIL Lamp on VIN: 2GCEK19R7V
P0300: Multiple Cylinder Misfire Detected. this vehicle was in our shop 1yr ago and replace engine with jasper reman came back few weeks later and found bad #7 and #8 injectors - replaced injectors - came back 1 month later and found #5 injector weak - had miss fires and those cylinders - truck came ba...
January 21, 2005
1996 Chevrolet S10 LS 4.3L Cuts out, Misfire, Poor Fuel Economy VIN: 1GCCS19X3T
P0300: Multiple Engine Misfire Detected. thanks for all the help in advance. the problems started approximately 6 month ago. we replaced the injectors and fuel pressure regulator and plugs and cleaned egr valve. 2 months later back again same problem flooding... same thing over again...injectors, pre...
January 25, 2005
1997 Chevrolet K1500 Cheyenne 5.7L MIL Lamp on VIN: 2GCEK19R7V
P0300: Multiple Cylinder Misfire Detected. this vehicle was in our shop 1yr ago and replace engine with jasper reman came back few weeks later and found bad #7 and #8 injectors - replaced injectors - came back 1 month later and found #5 injector weak - had miss fires and those cylinders - truck came ba...
January 26, 2005
1996 Chevrolet Corsica 3.1L No Start, Misfire VIN: 1G1LD55M4T
P0300: Multiple Engine Misfire Detected. car towed in no start. Bad fuel smell oil diluted with gas. Removed fouled plugs and replaced with new delco plugs. changed oil and filter. car would barely start and only for a second when held in wot flood mode and would run bad and stall after 15 seconds. s...
January 31, 2005
2003 Dodge Ram 1500 Truck 4.7L MIL Lamp on VIN: 1D7HU16N13
P0300: Multiple Cylinder Misfire Detected. This truck has been here three times for misfire codes. Different cylinders each time but always a code PO300. I can watch the misfire numbers climb on all cylinders if I run the engine at 1000 RPM in nuetral hot engine. I have not tried it cold. All the freez...
January 31, 2005