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P0300 Diagnostic Trouble Code Discussion for February 2012

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2001 Oldsmobile Alero GL 2.4L Misfire VIN: 1G3NL52TX1
P0300: Multiple Cylinder Misfire Detected. customer brought the car in ,said it has been doeing this for about 4 mo. when it is ideling it will intermit. skip you can here a slight pop pop out of the exaust. it will idel for moment do the the same thing ,raise the rpm a little it don,t do it. runs down...
February 01, 2012
2005 Ford Expedition XLT 5.4L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FMPU15505
P0300: random miss fire. eng has a miss for sure #3, changed coils #3 with #1 still has miss.Fuel pressure in range.Cleaned injectors while there no change will check compression but at Idle cyls 1 thru 4 same bank show minus contribution at idle .cant find a vac leak and when rpms go...
February 06, 2012
2000 Volkswagen Jetta GLS 2.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3VWSA29M7Y
P0300: random misfire. ... misfire, pulled codes p1255,p0300, p0301, and p0304.test ect wiring harness by unplugging sensor and got a reading of -46.5 celceuis (51 f)and with pin #3,#4 jumped got 141 celceuis(286f). tested sensor itself and was bad.replaced ect. for misfire tested w...
February 06, 2012
2003 Cadillac CTS 3.2L Misfire VIN: 1G6DM57N93
P0300: Multiple Cylinder Misfire Detected. Cylinder 1 misfire most of the time, plug darker than the rest. The valve cover gasket has been leaking and filled #1 hole and swelled plug boot. Suspected voltage jumping. Tested compression 175 PSI, 3 and 5 cylinder same compression and no misfire on those c...
February 08, 2012
2003 Cadillac CTS 3.2L Misfire VIN: 1G6DM57N93
P0300: Multiple Cylinder Misfire Detected. Cylinder 1 misfire most of the time, plug darker than the rest. The valve cover gasket has been leaking and filled #1 hole and swelled plug boot. Suspected voltage jumping. Tested compression 175 PSI, 3 and 5 cylinder same compression and no misfire on those c...
February 10, 2012
2004 Ford F-150 FX4 5.4L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTPX14534
P0300: Random Misfire det. ... P0012, P0174, P0300, P0301, P0302, P0303, P0304, P0316, P2196, and a P1000. Tech cleared codes and only the P0301 came back. Fuel trims LT were at 25 bank one and 10 b...
February 10, 2012
2000 Honda Accord EX 3.0L Poor Idle Quality, Surge, Poor Fuel Economy, MIL Lamp on VIN: 1HGCG1659Y
P0300: Multiple Misfire Detected. Car came in with all cylinder misfires, random misfire, and egr malfunction/low flow. Replaced intake manifold gasket, plenum gasket, fuel injector o-rings, and cleaned up EGR ports plugged by carbon deposits which caused the misfire. However after reinstallin...
February 14, 2012
2005 Honda Odyssey EX 3.5L Misfire, MIL Lamp on VIN: 5FNRL38755
P0300: Random Misfire Detected. Hey folks, got this van that has a random misfire on all cylinders. When i scan data with Snapon Solus Pro, I can see that all cylinders misfires. Funny thing is, sometime when it warm up, it runs fine( no misfire detected by scanner. My wife has the same vehi...
February 14, 2012
2006 Dodge Charger R/T 5.7L Misfire VIN: 2B3KA53H26
P0300: Multiple Cylinder Misfire. Help would be appreciated guys. I have one getting the best of me right now. The upstream 02 on bank 1 is stuck high so computer is leaning that bank out excessively causing misfires across the board. Voltage readings on scan tool are the same with it plugged ...
February 17, 2012
1999 Chevrolet Astro 4.3L Misfire, MIL Lamp on VIN: 1GNEL19W1X
P0300: Multiple Cylinder Misfire Detected. showes missfire #1 2 and 3 cyl most miss on #2 some times most # 1 , checked compression all cyl 150 155 plugs good and clean did injector leak test drops 10 lbs each cleaned on car with 3m cleaner vacum good dist timing 0 did waveform on cam and crank sensor ...
February 20, 2012
2000 Volkswagen Jetta GLS 2.0L Misfire VIN: 3VWSA29M2Y
P0300: Random/Multiple Cylinder Misfire Detected. ... customer comlpaint of MIL on and misfire. He had the codes pulled and stated they were P0300 and P0302. After scanning computer system with the Vag-Com found the codes stated by the customer. Test drove vehicle and it ran fine and the MIL was out. Decided ...
February 20, 2012
2009 Pontiac G3 1.6L Misfire, MIL Lamp on VIN: KL2TD66EX9
P0300: Random Misfire. Hey all, I have what should be a pretty easy one in my bay that is driving me up the wall. Vehicle came in, customer complaint that it started misfiring this weekend. I get in and at idle is seems to feel ok.(No misfires on the misfire counter). When I brake t...
February 21, 2012
1997 Pontiac Trans Sport 3.4L Misfire, MIL Lamp on VIN: 1GMDU06E9V
P0300: Multiple Cylinder Misfire Detected. Hello Tech's. Vehicle comes in failing the Ca. Smog Test. A code for the EGR reveals a "chatter noise" when the EGR test is being used with the engine OFF, key ON. The desired and the actual PIDs do not match. With a NEW EGR plugged in, KOEO, you can s...
February 23, 2012
2007 Chevrolet Tahoe LTZ 5.3L Misfire VIN: 1GNFK13067
P0300: Multiple Engine Misfire Detected. Thanks in advance,I have this 07 tahoe that has v4 cylinder deactivation and it came in for some front end work and exhaust manifold gasket(r/side).It was here for a few day after work was done drove great.Customer takes it and 2 days later comes back with eng...
February 24, 2012
2002 Nissan Frontier SE 3.3L Misfire VIN: 1N6ED29X62
P0300: Multiple Misfire Detected. Vehicle has missfire, code 300 & code 174. I can see on the snap on solus pro when the problem occurs , alpha bank 1 goes to down to 65 & bank 2 goes to 110. I know i can use my needle nose plier when the problem occurs i pinched the fuel return hose &...
February 25, 2012
2007 Chevrolet Tahoe LTZ 5.3L Misfire VIN: 1GNFK13067
P0300: Multiple Engine Misfire Detected. Thanks in advance,I have this 07 tahoe that has v4 cylinder deactivation and it came in for some front end work and exhaust manifold gasket(r/side).It was here for a few day after work was done drove great.Customer takes it and 2 days later comes back with eng...
February 27, 2012
2000 Audi A8 Quattro 4.2L Misfire VIN: WAUFL54D1Y
... at time's under acceleration. I test drove the car and the performance was very good even though check engine lite would flash at about 2800rpm. i scanned car and found several codes p0171 p0174, p0300,p0305,p0307,p0308,p0...
February 28, 2012
2006 Chevrolet Trailblazer LT 4.2L Excessive Emissions, Poor Idle Quality, Stall, Misfire VIN: 1GNET16S16
P0300: Multiple Engine Misfire Detected. ... another shop because of an intermittent stalling issue. They had already replaced the throttle body assembly and the cam position actuator solenoid. Test drove and couldnt get it to stall so brought it back to the shop and let it sit outside and idle came ...
February 29, 2012