Join Now
International Automotive Technicians Network

P0300 Diagnostic Trouble Code Discussion for July 2005

Multiple Misfire Detected


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0300
Help Request Posted
1998 Oldsmobile 88 Royale 3.8L No Start VIN: 1G3HN52K5W
P0300: Engine Misfire Detected. ... light blinking. happened out of the blue. cleared codes w/ snappy 2000 cartridge and 99 trouble shooter. even disconnected the battery terminals and touched them together for awhile to clear residule inductance. codes came right back.. the troubleshooter ...
July 02, 2005
1999 GMC K1500 Suburban SLE 5.7L Misfire, MIL Lamp on VIN: 1GKFK16R5X
P0300: Multiple Cylinder Misfire Detected. Hi Folks, Hoping to get some input on a Suburban that I bought in AZ. It ran fine when I was there but after sitting for a month{was started every so often}my driver who was bringing it back to NH for me called and said cel was on. It had a #5 cyl misfire cod...
July 05, 2005
1998 Chevrolet Lumina 3.1L MIL Lamp on VIN: 2G1WL52MOW
P0300: Multiple Engine Misfire Detected. ... light runs bad complaint. found code p0300 random misfire and p1381 misfire ebcm. we figured 102k and all original tune up stuff was probably a good place to start replaced plugs and wires with ac delco parts erased code and...
July 06, 2005
1999 Dodge Ram 1500 Truck 5.9L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3B7HC16Z3X
P0300: Multiple Cylinder Misfire Detected. ... realy sucks. any how here it is. random missfire at idle. Heres the history and info. customer takes vehicle to muffler shop for catalitic converter replacment, muffler shop reffers customer to us. customer complains about poor gas mileage and check engine...
July 06, 2005
1999 Dodge Intrepid 2.7L Misfire, MIL Lamp on VIN: 2B3HD46RXX
P0300: Multiple Cylinder Misfire Detected. When car came in it had the above DTC's. After clearing and driving again, the DTC's were P0305 and P0306. Again, the car was not counting misfires and did not run rough car was being driven approx. 65 MPH when this occured. The Long term adaptives are +/- 5%....
July 07, 2005
1997 Ford Taurus GL 3.0L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1FALP52U7V
P0300: random/multi mis fire. I have scanned, all those before mention codes.. AC most likely low on 134a I don't need help with that issue. I can hear what sounds like a vacuum leak. Ran out of time so I have not put a gauge on in and have not looked at all the the data when I scanned it ...
July 09, 2005
2000 Chevrolet Suburban 1500 5.3L Poor Idle Quality, Stall, Misfire, MIL Lamp on, Lack of Power VIN: 1GCEK142TX
P0300: Multiple Cylinder Misfire Detected. ... fellow shop. New customer to them. No signs of any work being performed other than maintenance. Vehicle just suddenly began to run poorly. It idles very rough, it will stall at times but restarts immediately,and has little to no power. Fuel pressure within...
July 11, 2005
2000 Chevrolet Prizm 1.8L Lack of Power VIN: 1Y1SK524YZ
P0300: Random Misfire. Vehicle has a cold stall, lack of power when started cold. Not every time. Codes were cleared about a week ago. Have not come back. Has exhaust leak @ front pipe. Had to wait for clamp to come in. Will replace tomorrow. I didn't want to post until I had solved...
July 11, 2005
1997 Chrysler Concorde LX 3.5L Misfire, MIL Lamp on
P0300: Multiple Cylinder Misfire Detected. mil came on at idle after long drive freeze showed code set at idle normal engine temp rpm and load
July 12, 2005
2000 Chevrolet Prizm 1.8L Lack of Power VIN: 1Y1SK524YZ
P0300: Random Misfire. Vehicle has a cold stall, lack of power when started cold. Not every time. Codes were cleared about a week ago. Have not come back. Has exhaust leak @ front pipe. Had to wait for clamp to come in. Will replace tomorrow. I didn't want to post until I had solved...
July 13, 2005
1999 Chevrolet K1500 Suburban 5.7L Misfire, MIL Lamp on VIN: 1GNFK16R6X
P0300: Multiple Cylinder Misfire Detected. this suburban came in with ses light on po300-missfire code.missfire monitor revealed cyls.3-4-5-6 missing with 4/5 worst.freeze frame revealed this happened at 71 mph on a hill with a small raft trailer.we have not been able to duplicate this in shop or road ...
July 14, 2005
1999 Volkswagen Jetta GL 2.0L Surge, Misfire, MIL Lamp on VIN: 3VWRC29M1X
P0300: Random/Multiple Cylinder Misfire. Engine idles well and runs normally during no-load revving. Under load, engine intermittently (usually) lacks power and surges violently. DTCs recurr if cleared. Intake air hose and MAF integrity verified.
July 14, 2005
1999 Chevrolet Venture 3.4L Poor Idle Quality, Misfire VIN: 1GNDX03E5X
P0300: Multiple Cylinder Misfire Detected. This problem has existed for many months and seems to be getting worse. There is a bad misfire in the system at all times. Even when the vehicle starts up cold the misfire can be felt. EGR system was checked. Code and check engine light reappear immediatly aft...
July 18, 2005
1997 Ford Explorer XL 4.0L Poor Idle Quality, Misfire, MIL Lamp on
P0300: Random Misfire. Timing chain is very noisy and compression low am I trying to fix a problem that can,t be fixed under circumstances. Cylinders 456 missing at idle but will fire under load. No vacuum leak can be found.Computer would only show PO300 at first but after clearing ...
July 18, 2005
2000 Toyota Corolla VE 1.8L Poor Idle Quality, MIL Lamp on VIN: 1NXBR12E4Y
P0300: Multiple Cylinder Misfire Detected. I am at a loss as to where to go next with this car. The symptom is a little longer than normal crank time in morning followed by a few seconds of rough running. Other than that car runs perfect. Check engine light is on with a code po300. Random misfire. My i...
July 19, 2005
2001 Volkswagen Golf GTI GLS 1.8L MIL Lamp on VIN: 9BWDD61J11
P0300: general misfire. ... poorly. #3 cylinder was not firing. After a brief diagnosis we determined that the coil was defective. All coil units were replaced and a complete maintaince was performed at this time. As for the code P1200 we did the output diagnostic test and the valve ...
July 22, 2005
2000 Audi A8 Quattro 4.2L MIL Lamp on
P0300: multi-miss. After I stuck the motor back in this thing and ran it at idle and 2500 rpm all went well. When I checked cam sesors in Actual Values channel 93 the reading was 0.00 kw on both sensors. When I went to Basic Settings ch.94 and ran test of the cam adjuster system...
July 25, 2005
2001 Honda Accord EX 3.0L Misfire, MIL Lamp on VIN: 1HGCG22561
P0300: Multiple Misfire Detected. we have this car that keeps setting missfire codes. at times will set po305, then will come back with a po302, or 304,ect no cylinders consently reset with no time or freeze frame corolation. have loaded all coils for output all will jump a hei spark tester. h...
July 25, 2005
2004 Chevrolet Trailblazer LS 4.2L Misfire VIN: 1GNDS13S74
P0300: Multiple Engine Misfire Detected. ... this, this truck have been buyed flooded, I have changed many things and now everything it's fine except this problem, I have repaired one piston and the valves, I have put the timing chain as the gm manual says but I have this code P0016, I have checked t...
July 26, 2005
2002 Toyota Tacoma Pre Runner 3.4L Poor Idle Quality, Misfire VIN: 5TEGN92N22
P0300: Multiple Cylinder Misfire Detected. I have checked plugs & wires all are good,also good spark is present at all.Have checked timing and it is onthe marks,also checked waveforms from the ignitor and as far as I can tell they are normal.the injectors are all pulsing. So any help figuring this...
July 27, 2005
1999 Oldsmobile Cutlass GLS 3.1L Misfire, MIL Lamp on VIN: 1G3NG52J9X
P0300: Multiple Cylinder Misfire Detected. hello guys, i would appreciate some help with this car.we have a misfire only on cyl #1.with scanner connected you can watch the misfire counter go right up.we have tried swapping the plugs ,wires coils, even the injectors with no luck.compression on the cyl. ...
July 28, 2005
2002 Toyota Tacoma Pre Runner 3.4L Poor Idle Quality, Misfire VIN: 5TEGN92N22
P0300: Multiple Cylinder Misfire Detected. I have checked plugs & wires all are good,also good spark is present at all.Have checked timing and it is onthe marks,also checked waveforms from the ignitor and as far as I can tell they are normal.the injectors are all pulsing. So any help figuring this...
July 28, 2005
1998 Oldsmobile 88 Royale 3.8L No Start VIN: 1G3HN52K5W
P0300: Engine Misfire Detected. ... light blinking. happened out of the blue. cleared codes w/ snappy 2000 cartridge and 99 trouble shooter. even disconnected the battery terminals and touched them together for awhile to clear residule inductance. codes came right back.. the troubleshooter ...
July 02, 2005
1999 GMC K1500 Suburban SLE 5.7L Misfire, MIL Lamp on VIN: 1GKFK16R5X
P0300: Multiple Cylinder Misfire Detected. Hi Folks, Hoping to get some input on a Suburban that I bought in AZ. It ran fine when I was there but after sitting for a month{was started every so often}my driver who was bringing it back to NH for me called and said cel was on. It had a #5 cyl misfire cod...
July 05, 2005
1998 Chevrolet Lumina 3.1L MIL Lamp on VIN: 2G1WL52MOW
P0300: Multiple Engine Misfire Detected. ... light runs bad complaint. found code p0300 random misfire and p1381 misfire ebcm. we figured 102k and all original tune up stuff was probably a good place to start replaced plugs and wires with ac delco parts erased code and...
July 06, 2005
1999 Dodge Ram 1500 Truck 5.9L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3B7HC16Z3X
P0300: Multiple Cylinder Misfire Detected. ... realy sucks. any how here it is. random missfire at idle. Heres the history and info. customer takes vehicle to muffler shop for catalitic converter replacment, muffler shop reffers customer to us. customer complains about poor gas mileage and check engine...
July 06, 2005
1999 Dodge Intrepid 2.7L Misfire, MIL Lamp on VIN: 2B3HD46RXX
P0300: Multiple Cylinder Misfire Detected. When car came in it had the above DTC's. After clearing and driving again, the DTC's were P0305 and P0306. Again, the car was not counting misfires and did not run rough car was being driven approx. 65 MPH when this occured. The Long term adaptives are +/- 5%....
July 07, 2005
1997 Ford Taurus GL 3.0L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1FALP52U7V
P0300: random/multi mis fire. I have scanned, all those before mention codes.. AC most likely low on 134a I don't need help with that issue. I can hear what sounds like a vacuum leak. Ran out of time so I have not put a gauge on in and have not looked at all the the data when I scanned it ...
July 09, 2005
2000 Chevrolet Suburban 1500 5.3L Poor Idle Quality, Stall, Misfire, MIL Lamp on, Lack of Power VIN: 1GCEK142TX
P0300: Multiple Cylinder Misfire Detected. ... fellow shop. New customer to them. No signs of any work being performed other than maintenance. Vehicle just suddenly began to run poorly. It idles very rough, it will stall at times but restarts immediately,and has little to no power. Fuel pressure within...
July 11, 2005
2000 Chevrolet Prizm 1.8L Lack of Power VIN: 1Y1SK524YZ
P0300: Random Misfire. Vehicle has a cold stall, lack of power when started cold. Not every time. Codes were cleared about a week ago. Have not come back. Has exhaust leak @ front pipe. Had to wait for clamp to come in. Will replace tomorrow. I didn't want to post until I had solved...
July 11, 2005
1997 Chrysler Concorde LX 3.5L Misfire, MIL Lamp on
P0300: Multiple Cylinder Misfire Detected. mil came on at idle after long drive freeze showed code set at idle normal engine temp rpm and load
July 12, 2005
2000 Chevrolet Prizm 1.8L Lack of Power VIN: 1Y1SK524YZ
P0300: Random Misfire. Vehicle has a cold stall, lack of power when started cold. Not every time. Codes were cleared about a week ago. Have not come back. Has exhaust leak @ front pipe. Had to wait for clamp to come in. Will replace tomorrow. I didn't want to post until I had solved...
July 13, 2005
1999 Chevrolet K1500 Suburban 5.7L Misfire, MIL Lamp on VIN: 1GNFK16R6X
P0300: Multiple Cylinder Misfire Detected. this suburban came in with ses light on po300-missfire code.missfire monitor revealed cyls.3-4-5-6 missing with 4/5 worst.freeze frame revealed this happened at 71 mph on a hill with a small raft trailer.we have not been able to duplicate this in shop or road ...
July 14, 2005
1999 Volkswagen Jetta GL 2.0L Surge, Misfire, MIL Lamp on VIN: 3VWRC29M1X
P0300: Random/Multiple Cylinder Misfire. Engine idles well and runs normally during no-load revving. Under load, engine intermittently (usually) lacks power and surges violently. DTCs recurr if cleared. Intake air hose and MAF integrity verified.
July 14, 2005
1999 Chevrolet Venture 3.4L Poor Idle Quality, Misfire VIN: 1GNDX03E5X
P0300: Multiple Cylinder Misfire Detected. This problem has existed for many months and seems to be getting worse. There is a bad misfire in the system at all times. Even when the vehicle starts up cold the misfire can be felt. EGR system was checked. Code and check engine light reappear immediatly aft...
July 18, 2005
1997 Ford Explorer XL 4.0L Poor Idle Quality, Misfire, MIL Lamp on
P0300: Random Misfire. Timing chain is very noisy and compression low am I trying to fix a problem that can,t be fixed under circumstances. Cylinders 456 missing at idle but will fire under load. No vacuum leak can be found.Computer would only show PO300 at first but after clearing ...
July 18, 2005
2000 Toyota Corolla VE 1.8L Poor Idle Quality, MIL Lamp on VIN: 1NXBR12E4Y
P0300: Multiple Cylinder Misfire Detected. I am at a loss as to where to go next with this car. The symptom is a little longer than normal crank time in morning followed by a few seconds of rough running. Other than that car runs perfect. Check engine light is on with a code po300. Random misfire. My i...
July 19, 2005
2001 Volkswagen Golf GTI GLS 1.8L MIL Lamp on VIN: 9BWDD61J11
P0300: general misfire. ... poorly. #3 cylinder was not firing. After a brief diagnosis we determined that the coil was defective. All coil units were replaced and a complete maintaince was performed at this time. As for the code P1200 we did the output diagnostic test and the valve ...
July 22, 2005
2000 Audi A8 Quattro 4.2L MIL Lamp on
P0300: multi-miss. After I stuck the motor back in this thing and ran it at idle and 2500 rpm all went well. When I checked cam sesors in Actual Values channel 93 the reading was 0.00 kw on both sensors. When I went to Basic Settings ch.94 and ran test of the cam adjuster system...
July 25, 2005
2001 Honda Accord EX 3.0L Misfire, MIL Lamp on VIN: 1HGCG22561
P0300: Multiple Misfire Detected. we have this car that keeps setting missfire codes. at times will set po305, then will come back with a po302, or 304,ect no cylinders consently reset with no time or freeze frame corolation. have loaded all coils for output all will jump a hei spark tester. h...
July 25, 2005
2004 Chevrolet Trailblazer LS 4.2L Misfire VIN: 1GNDS13S74
P0300: Multiple Engine Misfire Detected. ... this, this truck have been buyed flooded, I have changed many things and now everything it's fine except this problem, I have repaired one piston and the valves, I have put the timing chain as the gm manual says but I have this code P0016, I have checked t...
July 26, 2005
2002 Toyota Tacoma Pre Runner 3.4L Poor Idle Quality, Misfire VIN: 5TEGN92N22
P0300: Multiple Cylinder Misfire Detected. I have checked plugs & wires all are good,also good spark is present at all.Have checked timing and it is onthe marks,also checked waveforms from the ignitor and as far as I can tell they are normal.the injectors are all pulsing. So any help figuring this...
July 27, 2005
1999 Oldsmobile Cutlass GLS 3.1L Misfire, MIL Lamp on VIN: 1G3NG52J9X
P0300: Multiple Cylinder Misfire Detected. hello guys, i would appreciate some help with this car.we have a misfire only on cyl #1.with scanner connected you can watch the misfire counter go right up.we have tried swapping the plugs ,wires coils, even the injectors with no luck.compression on the cyl. ...
July 28, 2005
2002 Toyota Tacoma Pre Runner 3.4L Poor Idle Quality, Misfire VIN: 5TEGN92N22
P0300: Multiple Cylinder Misfire Detected. I have checked plugs & wires all are good,also good spark is present at all.Have checked timing and it is onthe marks,also checked waveforms from the ignitor and as far as I can tell they are normal.the injectors are all pulsing. So any help figuring this...
July 28, 2005