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P0300 Diagnostic Trouble Code Discussion for November 2015

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2009 Dodge Ram 1500 SLT 4.7L Misfire, MIL Lamp on
P0300: random misfire. ... and heavily misfiring intermittently. Truck ran good when scanned and found p0335 and p0300. Came back same day for oil change and it was missing badly. Found no spark on 3 7 and 8. Scanner pid showed same. Idling in shop the truck suddenly ran better and ...
November 01, 2015
2006 Ford Taurus SEL 3.0L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1FAFP56U36
P0300: Misfire. ... car has a misfire at idle or at a stop light P0300 code but not all the time Plugs / wires / coil /fuel filter /iac /air filter have all been replaced/ Fuel injectors are clean /throttle body cleaned And intake ,emission vapor lines have been smoke checked...
November 10, 2015
2006 Ford Taurus SEL 3.0L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1FAFP56U36
P0300: Misfire. ... car has a misfire at idle or at a stop light P0300 code but not all the time Plugs / wires / coil /fuel filter /iac /air filter have all been replaced/ Fuel injectors are clean /throttle body cleaned And intake ,emission vapor lines have been smoke checked...
November 10, 2015
1999 GMC Yukon SLT 5.7L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: 1GKEK13R8X
P0300: Multiple Cylinder Misfire Detected. has anybody got any ideas for us we changed the head gasket and we have this 5 7 miss and it doesn't appear to be electrical and the vacuum seams tight. looking for help/ideas would be appreciated. It is running O K on bank 1 and bank two is running very rich....
November 14, 2015
2008 Mercedes-Benz GL450 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 4JGBF71E58
P0300: . ... here. Recently have installed a used engine for them. Car came back in with a check engine light. Had codes for the tumbler flap issue which we have taken care of. Also, i have a p0016 code that was in the history. After tumbler flap repair it hasnt been d...
November 14, 2015
2004 Chevrolet Silverado 2500 6.0L MIL Lamp on VIN: 1GCHK29U24
P0300: Multiple Engine Misfire Detected. ... not complete a crank relearn. It sets trouble code P0300 but you never feel a misfire. There are dozens of posts saying to perform a crank relearn and I have tried dozens of times with 2 different snap-on scanners and 3 different tech 2s. After WOT the sna...
November 18, 2015
2004 Dodge Ram 1500 ST 5.7L Misfire VIN: 1D7HU18D24
P0300: Multiple misfire. ... looked in the records and have not found any symptoms that are a match. Customer brought vehicle to me about 10 days ago. Had a misfire dtc P0300. Found right bank all misfiring. Checked ignition, wires, compression, back pressure, vacuum. Replaced all 16 ...
November 18, 2015
2012 Jeep Grand Cherokee SRT8 6.4L Misfire VIN: 1C4RJFDJXC
Mis fire accurs at 2500 to 2750 rpms
November 18, 2015
2005 Cadillac SRX 3.6L Hesitation, Misfire, MIL Lamp on VIN: 1GYEE637X5
P0300: Engine Misfire Detected. ... trims are B1 +2, B2 -1, cam positions are a steady zero. At 55 mph, cams agree with desired and actual, calc load 50%, volumetric efficiency (as read on the Modis) 35%. On acceleration from any speed, it bogs down, data is B1 LTFT -11, B2 LTFT +12, calc lo...
November 19, 2015
2004 Dodge Ram 1500 ST 5.7L Misfire VIN: 1D7HU18D24
P0300: Multiple misfire. ... looked in the records and have not found any symptoms that are a match. Customer brought vehicle to me about 10 days ago. Had a misfire dtc P0300. Found right bank all misfiring. Checked ignition, wires, compression, back pressure, vacuum. Replaced all 16 ...
November 20, 2015
2005 Mercedes-Benz E500 5.0L Misfire VIN: WDB2110702
P0300: missfire all cylinders. cust complaint,when accelerated from stop engine started missing,and miss at idle,his repairer fitted new coils,leads,and manifold gaskets,2nd hand air flow sensor,no change came to me,have replaced air flow sensor with correct one,re set all adaptions,now eng...
November 23, 2015
2001 Chevrolet Suburban 1500 5.3L Poor Idle Quality, Cuts out VIN: 3GNFK16T11
P0300: Multiple Cylinder Misfire Detected. Engine will barely run and take no throttle till it goes in closed loop. When it goes in closed loop, STFT are 52% and LTFT are 25% and O2 shows under .200 volt so engine is lean. Injector MS at 7.00, clamp off fuel return, fuel pressure goes up to 80psi and S...
November 24, 2015
2005 Dodge Ram 1500 ST 5.7L Misfire VIN: 1D7HU16D85
P0300: Cylinder Misfire Detected. Dodge came in with misfire codes. Monitoring on the misfire counter found multiple cylinders randomly misfiring. Spark plugs were very worn, installed new plugs and wires. Now cylinders 2 and 3 are misfiring all the time. Cylinders 2 & 3 share ignition coi...
November 24, 2015
2001 Infiniti QX4 3.5L Poor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp on VIN: JNRDR09Y81
P0300: Multiple Misfire Detected. ... barely could nurse it into bays. At the time only code P1490 [ open or shorted vacuum cut valve by-pass valve ]. In park if you smoothly increased the rpms to about 2500 it was smooth. But if you tromped it it would stumble and backfire. Then found that I ...
November 25, 2015