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P0300 Diagnostic Trouble Code Discussion for June 2004

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
1997 Chevrolet Express 1500 5.0L Excessive Emissions, Misfire, MIL Lamp on VIN: 1GBFB15M4V
P0300: Multiple Cylinder Misfire Detected. ... "miss" and CEL illuminated. Found P0300 recorded. Ignition scope indicates low secondary demand on cyl #'s 3 & 5. Checked plugs, found Cyl #'s 3 & 5 to be fuel fouled, and although the plugs are worn on all cylinders they are not the cause...
June 02, 2004
1999 Dodge Ram 1500 Truck 5.9L Misfire, MIL Lamp on VIN: 3B7HF13Z0X
P0300: Multiple Cylinder Misfire Detected. Hi Dodge techs, This truck came in several weeks ago with the MIL light on. Had several misfire codes in computer. #5 cylinder has constant misfire. Has had new spark plugs, igniton wires, cap, rotor, air cleaner and a new injector for #5. Injection cleaning a...
June 02, 2004
2000 Ford F-150 XL 4.2L Misfire VIN: 1FTRF17W5Y
P0300: random misfire. i have a mastertech scantool with the 2003 v3.5 update. I called Vetronix to see if i could montitor the individual cylinders to determine which one was misfireing. They told me to go to OBDII F5 System tests and look at the PID and CID Pass and Fail. They tol...
June 02, 2004
2001 Oldsmobile Aurora 3.5L Poor Idle Quality, Misfire, Fuel gage E to F VIN: 1G3GR62H51
P0300: Multiple Cylinder Misfire Detected. Need help. have not worked on many of thies. Car came in for miss and check engine light on. fuel gasge would not go over 1/2 tank and jurked in reverse. Have checked grounds and wires from computer to front IC bank. all look ok after I take car out and drive ...
June 02, 2004
1999 Cadillac Catera 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: W06VR52R4X
P0300: Multiple Cylinder Misfire Detected. vehicle has random misfires on start up,noticed as soon as completed warm up cycle vehicle smoothed out.replaced plugs & 246 coil pack.coil pack was rusted in housing & 246 was prominent missies at first then switched to 135 and now completly random.cl...
June 04, 2004
1997 Pontiac Grand Am SE 2.4L Excessive Emissions, Misfire, MIL Lamp on
P0300: Multiple Cylinder Misfire Detected. I am looking for some help on this one.The car has a random misfire at inle hot or cold.It has been tune up ,motorvac,ig.coil housing replaced.Scan data looks ok with exception of sort and long trim fuel going low.Rad fan coms on and off even with cold engine(...
June 06, 2004
1997 Dodge Caravan 3.0L Excessive Emissions, Hesitation, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2B46P2438V
P0300: Multiple Cylinder Misfire Detected. ... wires, sparkplugs, …The Van was at few other shop, but nobody fixed the problem yet. MIL indicated P0300, P0301. #1 cylinder was very weak, but compression was 125 psi. The engine was running for over [...], we noticed strong ...
June 07, 2004
1999 Volkswagen Golf GLS 2.0L MIL Lamp on VIN: WVWGA31J1X
P0300: random misfire. car came in with check engine light on and would not accel. on hard accel. accel. slowly and takes gas good. checked codes and pulled 6 codes, p1129-ling term trim bank 1. po300-random misfire, po301-cylinder #1 misfire, po302-cylinder #2 misfire, po303-cylind...
June 07, 2004
1997 Chevrolet S10 2.2L Misfire, MIL Lamp on VIN: IGCCS1942V
P0300: Multiple Engine Misfire Detected. help misfire mania. this truck will misfire or skip badly on accelaration some times. may drive truck 40 or 50 miles with out doing. will misfire,skip,buck and backfire in exhaust 3 to 6 times and go back to running good. may set a code may not. with scanner h...
June 08, 2004
1997 Oldsmobile Silhouette 3.4L Misfire, MIL Lamp on VIN: 1GHDX06E3V
P0300: Multiple Cylinder Misfire Detected. ... Vehicle came in with MIL lamp on solid, customer stated lamp blinked a couple of times after starting. Customer informed the shop that vehicle has not been serviced for engine tune-up since it was new. Trouble code P0300 was stored, Misfire data showed #1 ...
June 08, 2004
1997 Oldsmobile Cutlass GLS 3.1L No Start, Poor Idle Quality, Misfire VIN: 1G3NG52M1V
P0300: Multiple Cylinder Misfire Detected. This vehicle came to us with a no-start condition. The battery was dead, we replaced and new terminal ends. Cranked, no start. No codes immediately present (of course battery had been dead for a while). Replaced Bosh plugs with Delco Plantinum's, new fuel filt...
June 08, 2004
1997 Chrysler Cirrus LX 2.5L Poor Idle Quality, Hesitation, Stall, Misfire, Poor Fuel Economy VIN: 1C3EJ56H4V
P0300: Multiple Cylinder Misfire Detected. hello i have this 97 cirrus 2.5 engine,the problem im having is that ignition timing is not advancing sccaner shows 39 degress if i check the timing with light on mark it shows 18 degress i check cam & crank sensor did not find any problems there,also chec...
June 09, 2004
1996 Chevrolet Beretta 3.1L Misfire, MIL Lamp on VIN: 1G1LV15M9T
P0300: Multiple Engine Misfire Detected. had high missfire count on 4&5 ie; (145k). check all perim. and short term and long term trying to compinsate, long term @8. propane test revield intake leak and repaired. runs much better but still have slight miss @idle on #5 with mill coming on after 75...
June 10, 2004
1999 Chrysler Sebring JX 2.5L Poor Idle Quality, Hesitation, Stall, MIL Lamp on VIN: 3C3EL45H9X
P0300: Multiple Cylinder Misfire Detected. This vehicle has a rough idle and a hesitaion. Compression is 160 across the board. Fuel pressure is 50 PSI. Injector drop test is good, injector flow test is good, have smoked the engine, and found no leaks. Checked timing marks and they are ok. Would appreci...
June 10, 2004
1999 Saab 9-5 SE 3.0L Excessive Emissions, Poor Idle Quality, MIL Lamp on, low power VIN: YS3EF48ZXX
P0300: Random misfire detected. ... codes P0300 & P1300, replaced plugs & air filter. When the car is accelerated under no load, the rubber duct from the intercooler to the throttle body will suck itself shut. I removed the duct and attached the air ...
June 10, 2004
1997 Chevrolet S10 4.3L Surge, Misfire, MIL Lamp on VIN: 1GTDT19W4V
P0300: Multiple Engine Misfire Detected. This is the second one i have seen do this and have still to figure it out. We just replaced the intake manifold gaskets and after we got a cmp and mutiple cylinder miss fire code. Replaced the cam sensor and plugs,wires and rotor. Cmp sensor code dont reset n...
June 11, 2004
1999 Buick Park Avenue 3.8L No Start, Misfire, false scanner data? VIN: 1G4CW52K4X
P0300: Engine Misfire Detected. we scanned tested system. found code po300 (random misfire). found #2 and #5 cylinders not firing. Cylinders had spark and noid. Then those problems went away. Let sit overnight and restarted in am and vehicle would not start. Scanner read ect at -40 degrees. ...
June 15, 2004
1999 Volkswagen EuroVan MV 2.8L Surge, MIL Lamp on VIN: WV2MH2706X
P0300: Random misfires. Hi All, customer went into a carwash with engine idling while washing van & when she put into gear to leave the CEL came on & was flashing. She did not notice any problem with engine running as it seemed to be just like normal. I have looked at vacuum...
June 15, 2004
1997 Audi A8 Quattro 4.2L Misfire, MIL Lamp on VIN: WAUBG84D2V
P0300: Random Misfire. Thanks in advance for your input. This car has reoccuring misfire codes on cylinders 5,7 and 8. The MIL will come on only during acceleration on a long high speed drive. Plugs and coils have been swapped to no effect. Injector resistance is 16.3 to 16.1 on all...
June 16, 2004
1998 Pontiac Trans Sport Montana 3.4L Misfire VIN: 1GMDX06E7W
P0300: Multiple Cylinder Misfire Detected. Hi. this 1998 transport has high cylinder#2 misfire counts. When brought off idle(2ooorpm) it cleans out. Tried plugs and wires, swapped ignition wires at coil pack,misfire remains on #2.posible module?
June 17, 2004
1997 BMW 740iL 4.4L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: WBAGJ832XV
P0300: random misfire. under load check engine light flashes and stays on. po300 ccode with po305, 306 and 308. notice cut off injector drive on these cylinders. number 5 and 6 cylinder no injector drive. power to injector but for some reason computer does not ground injector on the...
June 18, 2004
1997 Chrysler Sebring LXi 2.5L Poor Idle Quality, Hesitation, Stall, MIL Lamp on VIN: 4C3AU52N1V
P0300: Multiple Cylinder Misfire Detected. ... MIL on, poor idle, and occasionally stalling. I had replaced the plugs, and wires last week because of leaking valve covers. It is slow to rev up on a snap throttle, but performs well at cruise. I pulled codes and the p0300 was continuous, and it had p0302...
June 18, 2004
2000 Dodge Caravan 3.0L No Start, Surge, Cuts out, Misfire, MIL Lamp on
P0300: Multiple Cylinder Misfire Detected. ... for a no start. No, or very low fuel pressure. After some quick checks, I banged on the tank, and it sprung to life. Shut it off, and it would not re-start, without banging on the tank again. Current ramping the pump supported this, and the pattern looked ...
June 19, 2004
2000 Dodge Caravan 3.0L No Start, Surge, Cuts out, Misfire, MIL Lamp on
P0300: Multiple Cylinder Misfire Detected. ... for a no start. No, or very low fuel pressure. After some quick checks, I banged on the tank, and it sprung to life. Shut it off, and it would not re-start, without banging on the tank again. Current ramping the pump supported this, and the pattern looked ...
June 22, 2004
1999 Mercedes-Benz C230 Kompressor 2.3L Cuts out, Misfire, MIL Lamp on VIN: WBDHA24G5X
P0300: random cylinder misfire. The car looses power and will not take throttle at 2000 - 3500 rpms - It acts like a bad throttle position sensor on a domestic car. We have replaced plugs / oxygen sensor / mass air flow sensor / coil pack #3-#4 cylinders. After doing so the car ran great for...
June 22, 2004
2000 Saturn LS1 2.2L Misfire, MIL Lamp on VIN: 1G8JU52F2Y
P0300: Random Misfire Detected. ... world. This car will run OK for several days then start to miss once in a while and the check engine light will come on but not necessarily in that order. Plugs were original and worn so we replaced them with the proper ACDELCO plugs and flushed (MotorVac)...
June 22, 2004
1997 Dodge Caravan 3.0L Excessive Emissions, Hesitation, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2B46P2438V
P0300: Multiple Cylinder Misfire Detected. ... wires, sparkplugs, …The Van was at few other shop, but nobody fixed the problem yet. MIL indicated P0300, P0301. #1 cylinder was very weak, but compression was 125 psi. The engine was running for over [...], we noticed strong ...
June 27, 2004
1998 Dodge Durango 5.2L Poor Idle Quality, MIL Lamp on VIN: 1B4HS28YXW
P0300: Multiple Cylinder Misfire Detected. Vehicle came in with all codes but P0303 stored, P0303 is the only one set after clearing codes and running. Engine will miss at idle at times, misfire counter shows miss on #3 and some on #1&4. seems to be slightly better when warm. Injector codes indicat...
June 28, 2004
1997 Chevrolet Express 1500 5.0L Excessive Emissions, Misfire, MIL Lamp on VIN: 1GBFB15M4V
P0300: Multiple Cylinder Misfire Detected. ... "miss" and CEL illuminated. Found P0300 recorded. Ignition scope indicates low secondary demand on cyl #'s 3 & 5. Checked plugs, found Cyl #'s 3 & 5 to be fuel fouled, and although the plugs are worn on all cylinders they are not the cause...
June 02, 2004
1999 Dodge Ram 1500 Truck 5.9L Misfire, MIL Lamp on VIN: 3B7HF13Z0X
P0300: Multiple Cylinder Misfire Detected. Hi Dodge techs, This truck came in several weeks ago with the MIL light on. Had several misfire codes in computer. #5 cylinder has constant misfire. Has had new spark plugs, igniton wires, cap, rotor, air cleaner and a new injector for #5. Injection cleaning a...
June 02, 2004
2000 Ford F-150 XL 4.2L Misfire VIN: 1FTRF17W5Y
P0300: random misfire. i have a mastertech scantool with the 2003 v3.5 update. I called Vetronix to see if i could montitor the individual cylinders to determine which one was misfireing. They told me to go to OBDII F5 System tests and look at the PID and CID Pass and Fail. They tol...
June 02, 2004
2001 Oldsmobile Aurora 3.5L Poor Idle Quality, Misfire, Fuel gage E to F VIN: 1G3GR62H51
P0300: Multiple Cylinder Misfire Detected. Need help. have not worked on many of thies. Car came in for miss and check engine light on. fuel gasge would not go over 1/2 tank and jurked in reverse. Have checked grounds and wires from computer to front IC bank. all look ok after I take car out and drive ...
June 02, 2004
1999 Cadillac Catera 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: W06VR52R4X
P0300: Multiple Cylinder Misfire Detected. vehicle has random misfires on start up,noticed as soon as completed warm up cycle vehicle smoothed out.replaced plugs & 246 coil pack.coil pack was rusted in housing & 246 was prominent missies at first then switched to 135 and now completly random.cl...
June 04, 2004
1997 Pontiac Grand Am SE 2.4L Excessive Emissions, Misfire, MIL Lamp on
P0300: Multiple Cylinder Misfire Detected. I am looking for some help on this one.The car has a random misfire at inle hot or cold.It has been tune up ,motorvac,ig.coil housing replaced.Scan data looks ok with exception of sort and long trim fuel going low.Rad fan coms on and off even with cold engine(...
June 06, 2004
1997 Dodge Caravan 3.0L Excessive Emissions, Hesitation, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2B46P2438V
P0300: Multiple Cylinder Misfire Detected. ... wires, sparkplugs, …The Van was at few other shop, but nobody fixed the problem yet. MIL indicated P0300, P0301. #1 cylinder was very weak, but compression was 125 psi. The engine was running for over [...], we noticed strong ...
June 07, 2004
1999 Volkswagen Golf GLS 2.0L MIL Lamp on VIN: WVWGA31J1X
P0300: random misfire. car came in with check engine light on and would not accel. on hard accel. accel. slowly and takes gas good. checked codes and pulled 6 codes, p1129-ling term trim bank 1. po300-random misfire, po301-cylinder #1 misfire, po302-cylinder #2 misfire, po303-cylind...
June 07, 2004
1997 Chevrolet S10 2.2L Misfire, MIL Lamp on VIN: IGCCS1942V
P0300: Multiple Engine Misfire Detected. help misfire mania. this truck will misfire or skip badly on accelaration some times. may drive truck 40 or 50 miles with out doing. will misfire,skip,buck and backfire in exhaust 3 to 6 times and go back to running good. may set a code may not. with scanner h...
June 08, 2004
1997 Oldsmobile Silhouette 3.4L Misfire, MIL Lamp on VIN: 1GHDX06E3V
P0300: Multiple Cylinder Misfire Detected. ... Vehicle came in with MIL lamp on solid, customer stated lamp blinked a couple of times after starting. Customer informed the shop that vehicle has not been serviced for engine tune-up since it was new. Trouble code P0300 was stored, Misfire data showed #1 ...
June 08, 2004
1997 Oldsmobile Cutlass GLS 3.1L No Start, Poor Idle Quality, Misfire VIN: 1G3NG52M1V
P0300: Multiple Cylinder Misfire Detected. This vehicle came to us with a no-start condition. The battery was dead, we replaced and new terminal ends. Cranked, no start. No codes immediately present (of course battery had been dead for a while). Replaced Bosh plugs with Delco Plantinum’s, new fuel filt...
June 08, 2004
1997 Chrysler Cirrus LX 2.5L Poor Idle Quality, Hesitation, Stall, Misfire, Poor Fuel Economy VIN: 1C3EJ56H4V
P0300: Multiple Cylinder Misfire Detected. hello i have this 97 cirrus 2.5 engine,the problem im having is that ignition timing is not advancing sccaner shows 39 degress if i check the timing with light on mark it shows 18 degress i check cam & crank sensor did not find any problems there,also chec...
June 09, 2004
1996 Chevrolet Beretta 3.1L Misfire, MIL Lamp on VIN: 1G1LV15M9T
P0300: Multiple Engine Misfire Detected. had high missfire count on 4&5 ie; (145k). check all perim. and short term and long term trying to compinsate, long term @8. propane test revield intake leak and repaired. runs much better but still have slight miss @idle on #5 with mill coming on after 75...
June 10, 2004
1999 Chrysler Sebring JX 2.5L Poor Idle Quality, Hesitation, Stall, MIL Lamp on VIN: 3C3EL45H9X
P0300: Multiple Cylinder Misfire Detected. This vehicle has a rough idle and a hesitaion. Compression is 160 across the board. Fuel pressure is 50 PSI. Injector drop test is good, injector flow test is good, have smoked the engine, and found no leaks. Checked timing marks and they are ok. Would appreci...
June 10, 2004
1999 Saab 9-5 SE 3.0L Excessive Emissions, Poor Idle Quality, MIL Lamp on, low power VIN: YS3EF48ZXX
P0300: Random misfire detected. ... codes P0300 & P1300, replaced plugs & air filter. When the car is accelerated under no load, the rubber duct from the intercooler to the throttle body will suck itself shut. I removed the duct and attached the air ...
June 10, 2004
1997 Chevrolet S10 4.3L Surge, Misfire, MIL Lamp on VIN: 1GTDT19W4V
P0300: Multiple Engine Misfire Detected. This is the second one i have seen do this and have still to figure it out. We just replaced the intake manifold gaskets and after we got a cmp and mutiple cylinder miss fire code. Replaced the cam sensor and plugs,wires and rotor. Cmp sensor code dont reset n...
June 11, 2004
1999 Buick Park Avenue 3.8L No Start, Misfire, false scanner data? VIN: 1G4CW52K4X
P0300: Engine Misfire Detected. we scanned tested system. found code po300 (random misfire). found #2 and #5 cylinders not firing. Cylinders had spark and noid. Then those problems went away. Let sit overnight and restarted in am and vehicle would not start. Scanner read ect at -40 degrees. ...
June 15, 2004
1999 Volkswagen EuroVan MV 2.8L Surge, MIL Lamp on VIN: WV2MH2706X
P0300: Random misfires. Hi All, customer went into a carwash with engine idling while washing van & when she put into gear to leave the CEL came on & was flashing. She did not notice any problem with engine running as it seemed to be just like normal. I have looked at vacuum...
June 15, 2004
1997 Audi A8 Quattro 4.2L Misfire, MIL Lamp on VIN: WAUBG84D2V
P0300: Random Misfire. Thanks in advance for your input. This car has reoccuring misfire codes on cylinders 5,7 and 8. The MIL will come on only during acceleration on a long high speed drive. Plugs and coils have been swapped to no effect. Injector resistance is 16.3 to 16.1 on all...
June 16, 2004
1998 Pontiac Trans Sport Montana 3.4L Misfire VIN: 1GMDX06E7W
P0300: Multiple Cylinder Misfire Detected. Hi. this 1998 transport has high cylinder#2 misfire counts. When brought off idle(2ooorpm) it cleans out. Tried plugs and wires, swapped ignition wires at coil pack,misfire remains on #2.posible module?
June 17, 2004
1997 BMW 740iL 4.4L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: WBAGJ832XV
P0300: random misfire. under load check engine light flashes and stays on. po300 ccode with po305, 306 and 308. notice cut off injector drive on these cylinders. number 5 and 6 cylinder no injector drive. power to injector but for some reason computer does not ground injector on the...
June 18, 2004
1997 Chrysler Sebring LXi 2.5L Poor Idle Quality, Hesitation, Stall, MIL Lamp on VIN: 4C3AU52N1V
P0300: Multiple Cylinder Misfire Detected. ... MIL on, poor idle, and occasionally stalling. I had replaced the plugs, and wires last week because of leaking valve covers. It is slow to rev up on a snap throttle, but performs well at cruise. I pulled codes and the p0300 was continuous, and it had p0302...
June 18, 2004
2000 Dodge Caravan 3.0L No Start, Surge, Cuts out, Misfire, MIL Lamp on
P0300: Multiple Cylinder Misfire Detected. ... for a no start. No, or very low fuel pressure. After some quick checks, I banged on the tank, and it sprung to life. Shut it off, and it would not re-start, without banging on the tank again. Current ramping the pump supported this, and the pattern looked ...
June 19, 2004
2000 Dodge Caravan 3.0L No Start, Surge, Cuts out, Misfire, MIL Lamp on
P0300: Multiple Cylinder Misfire Detected. ... for a no start. No, or very low fuel pressure. After some quick checks, I banged on the tank, and it sprung to life. Shut it off, and it would not re-start, without banging on the tank again. Current ramping the pump supported this, and the pattern looked ...
June 22, 2004
1999 Mercedes-Benz C230 Kompressor 2.3L Cuts out, Misfire, MIL Lamp on VIN: WBDHA24G5X
P0300: random cylinder misfire. The car looses power and will not take throttle at 2000 - 3500 rpms - It acts like a bad throttle position sensor on a domestic car. We have replaced plugs / oxygen sensor / mass air flow sensor / coil pack #3-#4 cylinders. After doing so the car ran great for...
June 22, 2004
2000 Saturn LS1 2.2L Misfire, MIL Lamp on VIN: 1G8JU52F2Y
P0300: Random Misfire Detected. ... world. This car will run OK for several days then start to miss once in a while and the check engine light will come on but not necessarily in that order. Plugs were original and worn so we replaced them with the proper ACDELCO plugs and flushed (MotorVac)...
June 22, 2004
1997 Dodge Caravan 3.0L Excessive Emissions, Hesitation, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2B46P2438V
P0300: Multiple Cylinder Misfire Detected. ... wires, sparkplugs, …The Van was at few other shop, but nobody fixed the problem yet. MIL indicated P0300, P0301. #1 cylinder was very weak, but compression was 125 psi. The engine was running for over [...], we noticed strong ...
June 27, 2004
1998 Dodge Durango 5.2L Poor Idle Quality, MIL Lamp on VIN: 1B4HS28YXW
P0300: Multiple Cylinder Misfire Detected. Vehicle came in with all codes but P0303 stored, P0303 is the only one set after clearing codes and running. Engine will miss at idle at times, misfire counter shows miss on #3 and some on #1&4. seems to be slightly better when warm. Injector codes indicat...
June 28, 2004