P0300 Diagnostic Trouble Code Discussion for August 2015
Multiple Misfire Detected
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| Help Request | Posted | |
| 2003 Toyota Corolla CE 1.8L Poor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp on VIN: 1NXBR32E83 P0300: Multiple Cylinder Misfire Detected. After the head was installed it ran good but In gear at a stop it still had a vibration. Set a code P0349, vvt problem, erase code and drove 20 miles with out it coming back on. I decided to clean the maf sensor, throttle body and do a compression test to see ... |
August 02, 2015 | |
| 2003 Toyota Corolla CE 1.8L Poor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp on VIN: 1NXBR32E83 P0300: Multiple Cylinder Misfire Detected. After the head was installed it ran good but In gear at a stop it still had a vibration. Set a code P0349, vvt problem, erase code and drove 20 miles with out it coming back on. I decided to clean the maf sensor, throttle body and do a compression test to see ... |
August 03, 2015 | |
| 2000 Jeep Grand Cherokee Laredo 4.7L Excessive Emissions, Hesitation, Misfire, MIL Lamp on VIN: 1J4GW48N6Y P0300: Multiple Cylinder Misfire Detected. I used a lab scope and monitored the cam and crank sensor signals triggering off of #1 cylinder and compared to wave forms in library. Engine appears to be 1 tooth off according to scope and library wave forms. Customer took car back and removed covers. Sent m... |
August 05, 2015 | |
| 2002 Chevrolet Express 3500 5.7L No Start VIN: 1GBJG31R92 P0300: Multiple Cylinder Misfire Detected. I was doing an injector balance test using the Modis Ultra on the now sealed-off rail of this CFI injected truck. The test completed nicely ONCE, giving me the results I expected. 6 of 8 poppets are stuck. However, I wanted to show my tech the results and brou... |
August 06, 2015 | |
| 2007 Dodge Ram 1500 ST 4.7L Misfire VIN: 1D7HA18P47 P0300: Random misfire. Engine misfires when engine warms up when watching scanner every cylinder is randomly misfiring. We tried to kill one cylinder at a time but didn't help. Injectors have noid flash and are clicking and ohm tested good. Replaced #3 coil and spark plugs with no c... |
August 07, 2015 | |
| 1999 Chevrolet Tahoe LS 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNEK13R3X P0300: Multiple Cylinder Misfire Detected. P0300 with misfire only on cyl 6. Removed plug and found excessive buildup. Replaced plug. Misfire still on 6. swapped wire with #2 misfire stayed on 6. Removed cap and found heavy corrosion. Replaced cap and rotor. Still on 6. Removed valve cover to inspect v... |
August 11, 2015 | |
| 2008 Saturn Outlook XR 3.6L Cuts out, Misfire, MIL Lamp on VIN: 5GZER33778 P0300: random misfire detected. This vehicle came in for an intermittent driveability issue. What happens is it will randomly lose power. When it does, it only acts up for a few seconds. When it's not acting up, it runs great. When it is acting up, it has a complete loss of power. It's only ... |
August 11, 2015 | |
| 2006 Toyota Prius 1.5L Poor Idle Quality, Hesitation, MIL Lamp on VIN: JTDKB20UX6 P0300: Multiple Cylinder Misfire Detected. ... check engine light on. Vehicle was in a few weeks ago, we could not get vehicle to run rough with hours of run time, only code stored was P0304. Recommended customer return when problem is more apparent. Customer returned 1.5 months later with mil on, cust... |
August 11, 2015 | |
| 2004 Chevrolet Impala LS 3.8L Misfire VIN: 2G1WH52K24 P0300: Multiple Cylinder Misfire Detected. vehicle came in with misfire on cylinder 1 and 2. startup vehicle runs ok, as soon as you step on the gas it starts to misfire. the only thing I have not done is pull the valve cover to see if vlave spring is broken. Vehicle will stay running great as long as ... |
August 12, 2015 | |
| 2008 Ford F-250 Super Duty XLT 5.4L Poor Idle Quality, Hesitation, Stall, Misfire VIN: 1FTNX205X8 P0300: Random cylinder misfire. Had this truck come in for a misfire and found only 27 psi fuel pressure. We commanded the fuel pump duty cycle with IDS and could not get pressure any higher. We put 12v to the pump directly and pressure did not raise. So we replaced pump with motorcraft and ... |
August 13, 2015 | |
| 2004 Chevrolet Impala LS 3.8L Misfire VIN: 2G1WH52K24 P0300: Multiple Cylinder Misfire Detected. vehicle came in with misfire on cylinder 1 and 2. startup vehicle runs ok, as soon as you step on the gas it starts to misfire. the only thing I have not done is pull the valve cover to see if vlave spring is broken. Vehicle will stay running great as long as ... |
August 14, 2015 | |
| 2009 Volkswagen Jetta S 2.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3VWHM71K69 P0300: random cylinder misfire. Thanks for your help. We don't see many of these so any help from a vw tech or someone who knows these cars i'd be grateful. This jetta came in with the mil lamp on & running bad. I cranked it up & saw the mil light flashing along with what felt like a... |
August 14, 2015 | |
| 2005 Lincoln LS Luxury 3.0L Misfire VIN: 1LNHM86S55 P0300: Random misfire. I have not yet check compression or back pressure on bank two , i have confirmed new coils and plugs were installed . And it is getting fuel. I am suspecting a coil circuit problem or cam timing issue . Any tips suggestions or been there done that help please. |
August 17, 2015 | |
| 2003 Honda Civic EX 1.7L Misfire VIN: 1HGEM22933 P0300: Random Misfire Detected. we keep replacing #2 spark plug for misfire under load, repeat failure. the vehicle will go about 2-3 weeks and then need #2 spark plug again. we can narrow it down to #2 spark plug by using the cop wand then switching #2 and #3 plugs misfire follows then as s... |
August 19, 2015 | |
| 2001 Isuzu Rodeo LS 3.2L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 4S2CK58W41 P0300: Multiple Cylinder Misfire Detected. Intermittent issue here ,Can start the engine and all is running great let idle then suddenly the ST fuel trims will start to rise slowly to 39% then suddenly drop all at ones to 0 again ,when starts to rise engine runs poor . until drops again to 0.then runs ... |
August 19, 2015 | |
| 2006 Kia Sorento EX 3.5L Misfire VIN: KNDJD73346 P0300: Multiple Misfire Detected. hi guys:i have a ramdom miss fire 135 all in the same bank.car was runnin good for a week now is not i check with a lab scope the crank and cam sync.is good no vacum leak switch inyectors new plugs and wires.any idea? |
August 19, 2015 | |
| 2012 Ford F-250 Super Duty Lariat 6.2L Misfire VIN: 1FT7X2B66C P0300: Random cyl misfire. Vehicle came in barely running. Checked codes all misfire codes same bank. Unhooked exhaust pipe on right bank to check for plugged cat no change. Checked for melted plugs all okay. Would like to ask if variable valve timing could be causing such a problem. If... |
August 20, 2015 | |
| 1999 Chevrolet C3500 7.4L Misfire VIN: 1GBJC34J1X P0300: Multiple Cylinder Misfire Detected. Misfire under load above 4000 rpm when in passing gear or hard acceleration like on freeway ramp. Did tuneup with wires and distributor cap from Chevy dealer. Misses on #4 and #5 more on 4. Fuel pressure and volume good and there are cylinders with no misfires... |
August 21, 2015 | |
| 2004 Nissan 350Z Touring 3.5L Poor Idle Quality, Hesitation VIN: JN1AZ36A24 P0300: Multiple Misfire Detected. ... cylinder thump, and during the power balance test, #3 cylinder pops and runs rough. The other 5 cylinders pass the power balance test. Tested compression 160 psi on #3, and 160 psi on #5. I used a stethoscope to listen to the fuel injectors of #3 and #5 an... |
August 21, 2015 | |
| 2006 Saab 9-3 Aero 2.8L Misfire VIN: YS3FH46U06 P0300: Random missfire. When you drive this car nomally it runs fine. You can put the pedal to the floor and it has full power. The problem happens when you are in third gear and you are going a littlle too slow. If you step on the gas it begins to missfire. Sometimes afetr this happ... |
August 22, 2015 | |
| 2005 Buick LeSabre Limited 3.8L Misfire, MIL Lamp on VIN: 1G4HR54K05 P0300: Multiple Engine Misfire Detected. ... light flashing and a code p0300. shows a miss on cylinders 3,6,1,4. but the miss can not be felt. When the car is at idle it is fine but when it gets to about 1500 rpms the check engine light starts to flash and sets code. It will do it sitting in the shop... |
August 25, 2015 | |
| 2005 Buick LeSabre Limited 3.8L Misfire, MIL Lamp on VIN: 1G4HR54K05 P0300: Multiple Engine Misfire Detected. ... light flashing and a code p0300. shows a miss on cylinders 3,6,1,4. but the miss can not be felt. When the car is at idle it is fine but when it gets to about 1500 rpms the check engine light starts to flash and sets code. It will do it sitting in the shop... |
August 26, 2015 | |
| 1999 Chevrolet C3500 7.4L Misfire VIN: 1GBJC34J1X P0300: Multiple Cylinder Misfire Detected. Misfire under load above 4000 rpm when in passing gear or hard acceleration like on freeway ramp. Did tuneup with wires and distributor cap from Chevy dealer. Misses on #4 and #5 more on 4. Fuel pressure and volume good and there are cylinders with no misfires... |
August 26, 2015 | |
| 2007 Hyundai Sonata SE 3.3L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 5NPEU46F67 P0300: Multiple Misfire Detected. ... for codes and found P0300 and P0305. Miss was on cyl #5. We replaced all three rear coils and all plugs. Miss still intermittent on cyl 5. Swapped injectors and miss is still intermittent on cyl 5. Vehicle can run for 20 mins and run perfect, put it in gea... |
August 26, 2015 | |
| 2008 Honda Accord EX 3.5L Misfire, MIL Lamp on VIN: 1HGCP36888 P0300: random misfire. Has misfire codes for bank 2. car seems to run OK and have never felt misfires. We have changed plugs, swapped coils, swapped injectors. Compression test Cly 1,2,&3 190 to 195#s--Cly 4,5,&6 165 to 170#s. Pulled front apart checked timing belt was right... |
August 27, 2015 | |
| 2007 Hyundai Sonata SE 3.3L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 5NPEU46F67 P0300: Multiple Misfire Detected. ... for codes and found P0300 and P0305. Miss was on cyl #5. We replaced all three rear coils and all plugs. Miss still intermittent on cyl 5. Swapped injectors and miss is still intermittent on cyl 5. Vehicle can run for 20 mins and run perfect, put it in gea... |
August 27, 2015 | |
| 2009 Mazda CX-7 Touring 2.3L Misfire VIN: JM3ER29L19 P0300: random misfire. ... one. came in with mil on, p0300. road tested vehicle and it felt like a straight-forward ignition misfire. found tsb on spark plug replacement, which seemed like a good place to start.nothing looked out of the ordinary with plugs or coils. road tested to c... |
August 30, 2015 | |
| 2006 Buick LaCrosse CXL 3.8L Poor Idle Quality, Misfire VIN: 2G4WD58266 P0300: Engine Misfire Detected. This engine doesn't have that many miles on it. It's a Jasper rebuilt, and probably only has about 20 k on it. I need some help here guys. I have this 06 Buick that is showing me that 30 years of experience don't mean anything sometimes..lol I've done just abo... |
August 31, 2015 | |
| 2000 Porsche 911 Carrera 3.4L Misfire, MIL Lamp on VIN: WP0AA2992Y P0300: random misfire. What seemed like a simple fix has become swomewhat of a problem. Customers original complaint was an intermittent misfire on #1 cylinder. I replaced the spark plugs and #1 ignition coil, cleared the codes and road tested the vehicle after which it developed a ... |
August 31, 2015 |
