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P0300 Diagnostic Trouble Code Discussion for May 2014

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2009 Audi A4 Quattro 2.0L Poor Idle Quality, Misfire VIN: WAULF78K39
P0300: random misfire. we have this a4 that came in with a rough idle. drove the car and while moving the car has sufficient pick up/power. when at a stop the engine misfires. the dealer had checked mechanical timing of crank to cam and of cam to cam. tried a cam sensor and found no...
May 01, 2014
2007 Chevrolet Suburban 1500 Z71 5.3L Misfire VIN: 3GNFK163X7
P0300: Multiple Engine Misfire Detected. All this customer was complaining about was the Check Stabilitrack light was on. No mention of the flashing check engine light or the oil level low light being on. My Tech 2 shows a misfire on cylinder # 4 with a few misfires on cylinder #3. I decided to cha...
May 01, 2014
2010 Dodge Charger R/T 5.7L Cuts out, Stall, Misfire VIN: 2B3AA4CTXA
P0300: Multiple misfire. This squad car has had recurring p0462 for years despite replacement of suspect sensors and one failed pump. The issue with it is that recently it would run great, then miss like crazy, stall and may or may not restart. The symptom is so random that we've only...
May 01, 2014
2007 GMC Savana 2500 4.8L Misfire VIN: 1GTGG25V87
P0300: Multiple Cylinder Misfire Detected. We recieved vehicle from customer with misfire. We see mis fire on cyl 7 and cyl 8. It occurs under slight load at aprox 1300 to 1500 Rpm in park and can also be felt driving down the road. We have checked coils and swapped them with known good cylinders. We h...
May 01, 2014
2003 Honda Pilot EX 3.5L Misfire VIN: 2HKYF185X3
P0300: Random Misfire Detected. I cannot get rid of this vehicles misfire. New plugs and coils when vehicle came in initially misfiring, was gone a few weeks then back in for misfires on 3 and 6. moved coils around and cleaned EGR passageways (almost completely plugged), vehicle back again, ...
May 01, 2014
2008 Nissan Altima 2.5L Surge, Cuts out, Misfire VIN: 1N4AL21E38
P0300: Mutiple missfire. ... car in stating it almost didn't make it to the shop. Pulled the car in & it had a slight cyl. Missfire. Only code is po300. Replaced #1 & 2 coils & plugs because the plugs were wet. Helped for 1/2 the test drive then almost died running on what...
May 01, 2014
2001 Oldsmobile Aurora 3.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G3GR64H51
P0300: Multiple Cylinder Misfire Detected. This one runs smoothly at startup, misfires after warmup drive. Misses only on 1-3-5 bank, espescially #5. I have tried to find this problem for 3 days, no help. No engine noise. Any ideas? TIA Mike [...]
May 01, 2014
2005 Mercedes-Benz CLK320 3.2L Misfire VIN: WDBTK65J95
P0300: random misfire. car started cold replaced crank sensor test drive. confirmed crank sensor fixed no start issue. proceeded to egr traced to bad vacuum tranducer replaced egr tranducer assembly test new one with snap on egr acuation on verus. no click at tranducer test power at...
May 03, 2014
2004 Honda Civic GX 1.7L Surge, Misfire VIN: 1HGEN26524
P0300: Random Misfire Detected. This is a car that is giving me very bad problems. it idles well but under a load at any temperature, it will start to misfire. it will throw all of the codes mentioned and do it within 1/4 mile. We adjusted the valves. no difference. ran an in cylinder compre...
May 05, 2014
2005 Mercedes-Benz CLK320 3.2L Misfire VIN: WDBTK65J95
P0300: random misfire. car started cold replaced crank sensor test drive. confirmed crank sensor fixed no start issue. proceeded to egr traced to bad vacuum tranducer replaced egr tranducer assembly test new one with snap on egr acuation on verus. no click at tranducer test power at...
May 05, 2014
2004 Chrysler PT Cruiser Limited 2.4L Poor Idle Quality, Cuts out, Stall, Misfire, MIL Lamp on VIN: 3C8FY68814
P0300: Multiple Cylinder Misfire Detected. Complaint of would not idle, barely limped to my shop and the check engine light came on. Found other posts with the same concern but no resolution. No accident and visually cannot see any issues of corrosion, melted or rubbed through harness. Let run but did ...
May 07, 2014
2004 Nissan 350Z Touring 3.5L Misfire VIN: JN1AZ36AX4
P0300: Multiple Misfire Detected. I have a Z that has a misfire on cylinder #1 only. I found the injector was not receiving a pulse signal from the computer so I did my necessary checks and determined it needed the computer. I got a brand new computer from Nissan and had the dealer program it....
May 07, 2014
2003 Volkswagen Passat GLX 2.8L Misfire, MIL Lamp on
I have this vw passat with the 2.8 the customer has had alot of repairs done to this car at a another shop well now she brought it to me saying the the check enging light flashes at around 3,000 rpms an I've check an confirmed that it is flashing at 3,000 rpms...
May 07, 2014
2009 Dodge Grand Caravan SE 3.3L Hesitation VIN: 2D8HN44E19
P0300: . Van came in with complaint of hesitation on acceleration. Can get van to hesitate from a stop during heavy acceleration in 1st gear. Happens in other gears and driving conditions as well but is most consistent then. Crank sensor has been replaced at another sh...
May 15, 2014
1996 Chevrolet Impala SS 5.7L Misfire, MIL Lamp on VIN: 1G1BL52P2T
P0300: Multiple Engine Misfire Detected. ... was brought to me from another shop, where motor and trans were rebuilt also had a compleat tune up with above repairs. car came in with 8 codes in memory four were for ox sensors no activity lean exhaust and heater codes both banks. also had a ramdom misf...
May 19, 2014
2004 Chevrolet Malibu LS 3.5L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G1ZT54854
P0300: Multiple Engine Misfire Detected. thanks in advance.car came in w/random missfire code, missing on cyls 1 & 3 mostly some misses showing on other cyls but very little figured this was due to major skips on 1&3.cust had installed new plugs & wires,chkd firing order ,ok.swapped plugs...
May 19, 2014
2007 Toyota FJ Cruiser 4.0L No Start, MIL Lamp on VIN: JTEBU11F37
P0300: Multiple Cylinder Misfire Detected. ... parked. Next morning, cranks but will not run. Owners neighbor checked it out and still not running. They called me next day. Checked for rodent damage...none found. Battery, 10.9vdc cranking. 1/4 tank of fuel. Checked all fuses.Okay. Original mechanic...
May 20, 2014
2006 Chevrolet Equinox LT 3.4L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 2CND173F36
P0300: Engine Misfire Detected. Have this Equinox with P0171 and P0300 in shop. Spark is good, fuel pressure is good, fuel injectors are good. Smoke tested, PCV hose was leaking heavily. Both PCV hoses were replaced, and I no longer see any leaks. Codes set at 203 degrees F, 850 rpm, -100% f...
May 23, 2014
2007 Toyota FJ Cruiser 4.0L No Start, MIL Lamp on VIN: JTEBU11F37
P0300: Multiple Cylinder Misfire Detected. ... parked. Next morning, cranks but will not run. Owners neighbor checked it out and still not running. They called me next day. Checked for rodent damage...none found. Battery, 10.9vdc cranking. 1/4 tank of fuel. Checked all fuses.Okay. Original mechanic...
May 23, 2014
1997 Porsche 911 Carrera 3.6L Poor Idle Quality, low manifold vacuum VIN: WP0AA2991V
P0300: random missfire. The car came in with secondary air faults.Found the air passages plugged due to oil leaking past the valve guides.Disassembled the engine and sent the heads,cam holders and cams to the machine shop.Received the parts from the mach.shop and then found a nick in...
May 28, 2014
2003 Suzuki Aerio SX 2.0L Poor Idle Quality, Surge, Misfire VIN: JS2RC41H13
P0300: Multiple Cylinder Misfire Detected. ... came in with very high idle like 3000 RPMs, the owner tried to fix it, he mesed up the timing, TPS sensor, and idle screw, he instslled a new MAF sensor, he made a gasket for the idle motor with paper, anyway we smoked the intake sys. and found leaks in th...
May 29, 2014
2001 Audi A6 Quattro 2.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WAUEH54B41
P0300: Cylinder misfire. Vehicle came into shop with a misfire at idle. Scanned for codes and found that cylinder 3 had a misfire. This misfire only occurred at idle. Misfire at around 1200 rpm would disappear. I replaced spark plugs and plug wires. Didn't fix the problem. Fuel pressu...
May 30, 2014