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P0300 Diagnostic Trouble Code Discussion for June 2012

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2006 Toyota Sienna LE 3.3L Misfire, MIL Lamp on VIN: 5TDZA23C46
P0300: Multiple Cylinder Misfire Detected. ... Vehicle came in with a light misfire. Also had multiple codes stored. Cleared codes and P0305 comes back immidiately. Misfire data shows a constant misfire count. Performed a tune up due to original plugs. Swapped coil to #6 hole, to see if miss changed cy...
June 01, 2012
2002 GMC Savana 3500 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GDJG31R62
P0300: Multiple Cylinder Misfire Detected. ... much history. This plumbing van has the SES light on with 3 codes. P0300, P0305 & P01381. Engine runs moderately rough only at idle. HISTORY misfires on all eight cylinders. CURRENT misfires mainly on #5 cylinder wit...
June 03, 2012
2005 Hummer H2 6.0L Misfire, MIL Lamp on
P0300: Multiple Cylinder Misfire Detected. ok,this will sound weird but i have a strange misfire issue here.between 2000 and 3000 rpm in park or while driving # 1 and #6 will show misfiring as if the plug wires were off. both follow eachother like a mirror image.there is no actual misfiring that can be...
June 04, 2012
1998 Chevrolet Express 1500 5.0L Excessive Emissions, Poor Idle Quality, Hesitation, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GBFG15M7W
P0300: Multiple Cylinder Misfire Detected. ... of the system turned up only p0300 random misfire. Using the scan tool only seem to have a proble on cylinders 2 and sometimes on number 8. All other cylinders are not showing a misfire. New plugs, distributor, ignition wires all installed with no change. ...
June 05, 2012
1998 Chevrolet Express 1500 5.0L Excessive Emissions, Poor Idle Quality, Hesitation, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GBFG15M7W
P0300: Multiple Cylinder Misfire Detected. ... of the system turned up only p0300 random misfire. Using the scan tool only seem to have a proble on cylinders 2 and sometimes on number 8. All other cylinders are not showing a misfire. New plugs, distributor, ignition wires all installed with no change. ...
June 06, 2012
2000 Chevrolet Silverado 1500 5.3L No Start, MIL Lamp on VIN: 2GCEK19T0Y
P0300: Multiple Cylinder Misfire Detected. ... to help. This chevy came in on the hook. the original complaint is that the vehicle has been running worse and worse for about a year now. however the customer only uses it in the summer to tow his boat on long weekends and for occasional yard work. when I...
June 06, 2012
2008 Honda Fit Sport 1.5L Misfire, MIL Lamp on VIN: JHMGD37678
P0300: multiple misfire. Last time in we replaced spark plugs with OEM plugs, cleaned dirty throttle plate, replaced very dirty air filter, checked for vacuum leaks etc. cleared codes, did long road test after 2 weeks and several hunded miles mil light came on again with PO300 and PO3...
June 06, 2012
2006 Toyota Sienna LE 3.3L Misfire, MIL Lamp on VIN: 5TDZA23C46
P0300: Multiple Cylinder Misfire Detected. ... Vehicle came in with a light misfire. Also had multiple codes stored. Cleared codes and P0305 comes back immidiately. Misfire data shows a constant misfire count. Performed a tune up due to original plugs. Swapped coil to #6 hole, to see if miss changed cy...
June 07, 2012
2001 Chevrolet Cavalier 2.2L Poor Idle Quality, Hesitation, Stall, Misfire, no power VIN: 1G1JC12401
P0300: Multiple Engine Misfire Detected. customers says car loss power while driving,towed to shop.it will start but idles rough with no power like restricted exhaust.dropped exhaust no change.good fire,injectors check good,good fuel pressure.scanner shows po300 code.sensor data on scanner looks good...
June 08, 2012
2004 Chevrolet Classic (Car) 2.2L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G1ND52FX4
P0300: multi misfire. We replaced the timing chain due to broken guide rail and jumped timing. vehicle has run poorly before the chain was replace and after the chain was replaced, Will not idle will not take fuel. we have performed a compression test and leak down test, passing bo...
June 11, 2012
2000 Acura RL Premium 3.5L Misfire VIN: JH4KA9657Y
P0300: Multiple Misfire Detected. Hey Acura/Honda Guru's! Another Awesome Friday! It was until one of our techs did some routine service on this Acura. After service, the customer is happy and drives away... 5 min later, he is BACK? check engine light on. The Heater Circuit on Bank 2S1 Failed?...
June 16, 2012
2003 GMC Safari 4.3L Misfire VIN: 1GTDM19X73
P0300: Multiple Cylinder Misfire Detected. ... engine light will flash when going up a hill, but it has to be a long hill. Going up the hill by my shop (the one I always use to road test), or on a level it runs fine. It sets a P0300 code and if you look at the misfire monitor it shows #5 as the missing...
June 18, 2012
2001 Dodge Ram 1500 Van 3.9L Misfire, MIL Lamp on VIN: 2B6HB11X71
P0300: Multiple Cylinder Misfire Detected. ... in advance. I have this dodge ram van that came to our shop from another shop with a skipping engine and check engine light. As soon as I started working on this truck I found the valve seats where no good. removed cyl head and indeed valve seats no good a...
June 22, 2012
1998 Chevrolet Malibu LS 3.1L No Start VIN: 1G1NE52M8W
P0300: Multiple Cylinder Misfire Detected. My son was driving and it just quit running & would not restart Towed to house car would start run for aprox 20 secs and die. Checked fuel pressure maintains 45 psi check for spark at coil pack and plugs spark color was a dull orange not the crisp pretty b...
June 23, 2012
2001 Dodge Ram 1500 Van 3.9L Misfire, MIL Lamp on VIN: 2B6HB11X71
P0300: Multiple Cylinder Misfire Detected. ... in advance. I have this dodge ram van that came to our shop from another shop with a skipping engine and check engine light. As soon as I started working on this truck I found the valve seats where no good. removed cyl head and indeed valve seats no good a...
June 24, 2012
2003 Audi A4 1.8L MIL Lamp on VIN: WAULC68E23
P0300: multiple cylinder misfire. ok this car came to us with the customer already replacing coils , plugs , maf... upon inspection i found the pcv was no good and vehicle couldn't idle and was going into a vacuum . i replaced the pcv valve and two split vacuum lines that i found cleaned the t...
June 25, 2012
2005 Chevrolet Equinox LS 3.4L Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2CNDL13F95
P0300: Engine Misfire Detected. ... comkplaint is the vehicle has VERY POOR fuel economy. MIL is Illuminated. Retrieved DTC;s; P0300- Random Multiple Misfire Detected. Used SOLUS-PRO Scanner to read live misfire data. Cylinder #5 is misfiring steadily.(engine seems to be running smoothly fro...
June 25, 2012
2000 Pontiac Montana 3.4L Misfire VIN: 1GMDX03E7Y
P0300: Multiple Cylinder Misfire Detected. Help! this van is driving us nuts. We swapped out the old engine with a fresh reman (old one had a broken piston skirt and making noise, but ran ok otherwise). Ever since the new one was installed, it has had a constant miss on #2 cylinder. We checked for vacu...
June 25, 2012
2003 Chevrolet Express 3500 6.0L MIL Lamp on VIN: 1GBHG31U93
P0300: Multiple Cylinder Misfire Detected. This high mileage van has a P0300 and shows consistent misfires on cylinders 5 and 8 when accelerating down the road or in neutral, though no misfire is felt or actually occuring. We cannot complete a crankshaft variation relearn procedure, which is our main c...
June 26, 2012
2003 Chevrolet Silverado 1500 4.8L Misfire VIN: 2GCEC19V63
P0300: Multiple Cylinder Misfire Detected. I hope you guys can steer me in the right direction because I think I've hit a brick wall.This truck has missfires when cold(or after it has sat for 1/2 hour).Only missfires on the right hand cylinders(bank#2).Cylinder #6 is by far the worst.The missfire goes ...
June 26, 2012
2005 Chevrolet Equinox LS 3.4L Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2CNDL13F95
P0300: Engine Misfire Detected. ... comkplaint is the vehicle has VERY POOR fuel economy. MIL is Illuminated. Retrieved DTC;s; P0300- Random Multiple Misfire Detected. Used SOLUS-PRO Scanner to read live misfire data. Cylinder #5 is misfiring steadily.(engine seems to be running smoothly fro...
June 26, 2012
2003 Chevrolet Express 3500 6.0L MIL Lamp on VIN: 1GBHG31U93
P0300: Multiple Cylinder Misfire Detected. This high mileage van has a P0300 and shows consistent misfires on cylinders 5 and 8 when accelerating down the road or in neutral, though no misfire is felt or actually occuring. We cannot complete a crankshaft variation relearn procedure, which is our main c...
June 27, 2012
2000 Isuzu Rodeo LS 3.2L Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on, backfire VIN: 4S2DM58W0Y
P0300: Multiple Cylinder Misfire Detected. i got a good one. It's a 2000 isuzu rodeo with a 3.2. It runs rough, hesitates, dies occasionally, and backfires under load only when cold started and in open loop. I sprayed down the intake manifold for vacuum leaks and couldn't find one. Both short and long ...
June 27, 2012
2001 Toyota Corolla CE 1.8L Misfire, MIL Lamp on VIN: 2T1BR12E11
P0300: Multiple Cylinder Misfire Detected. ... problem with this Corolla w/ the 1.8lt VVTi engine. I replaced the timing chain w/ a complete service kit from NAPA. Once the job was done the car ran beautiful. Customer picked and called shortly after saying that the MIL had come on. I asked him to retur...
June 27, 2012
2003 Chevrolet Silverado 1500 4.8L Misfire VIN: 2GCEC19V63
P0300: Multiple Cylinder Misfire Detected. I hope you guys can steer me in the right direction because I think I've hit a brick wall.This truck has missfires when cold(or after it has sat for 1/2 hour).Only missfires on the right hand cylinders(bank#2).Cylinder #6 is by far the worst.The missfire goes ...
June 28, 2012
2004 Chevrolet Trailblazer LS 4.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNDS13S84
P0300: Multiple Engine Misfire Detected. Hello iATN members, this Trailblazer is driving me nuts. First it came in with 2 misfire codes cyl. #2 & #5, replaced coils and it was fine for a week then it came back with cyl. #1 misfire, I have done everything posible, compression test, new plugs, 3 co...
June 28, 2012