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P0300 Diagnostic Trouble Code Discussion for April 2019

Multiple Misfire Detected

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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2006 Dodge Ram 1500 ST 4.7L Stall, Loss of throttle VIN: 1D7HA18N56
P0300: Multi cylinder misfire. Customer originally came in with the above codes and a p0420 and p0430. Both catalytic convertors were replaced. This vehicle runs great most of the time. Has intermediate lose of throttle. Will die sometimes. Our scanner reads that is it in closed loop ev...
April 01, 2019
2000 Toyota 4Runner SR5 3.4L Hesitation, Surge, Misfire, MIL Lamp on VIN: JT3HN86R6Y
P0300: Multiple Cylinder Misfire Detected. This vehicle runs poorly at 3000 rpm. The owner has replaced a lot of parts trying to determine the concern. I have a scope waveform of the CKP / CMP relationship: I uploaded that to the waveform library. I am thinking the timing belt may be off, but...
April 04, 2019
2003 Mazda 6 i 2.3L Cuts out, Misfire, VIN: 1YVFP80CX3
P0300: Random Misfire Detected. ... code p0300 random cylinder misfire test drove verified problem .checked for egr issue and found not closing all the way installed egr and new plugs,#1 spark plug came out black rest were fine.Test drove again and problem was worse so we checked timing...
April 12, 2019
2015 Audi Q3 Quattro Premium Plus 2.0L Misfire, MIL Lamp on VIN: WA1EFCFSXF
P0300: Random cylinder misfire detected. We have confirmed this is not an ignition misire. Inspected the spark plugs, swapped ignition coils and replaced the spark plugs. The misfire is always cyl.#4. It only happens on acceleration over 3,000 rpm's. We are looking at replacing the fuel injector....
April 15, 2019
2007 GMC Acadia SLE 3.6L Poor Idle Quality, Poor Idle Quality VIN: 1GKEV13737
P0300: Multiple Engine Misfire Detected. Hello, HELP !!! This Acadia is busting our brain. We have a mis-fire at idle only. Going down the road, car runs perfect and no mis-fires on the scanner. come to an idle and mis-fires on number 4 cylinder. We have changed the spark plugs, coil, fuel...
April 16, 2019
2001 GMC Sierra 1500 SL 5.3L Hesitation, Cuts out, Misfire VIN: 1GTEK19T81
P0300: Multiple Cylinder Misfire Detected. ... Our shop, has had plugs changed multiple times, intake was leaking, and ha been replaced, compression is good, all coils were replaced by customer with High voltage Performance amazon Specials, Problem is the same, It should be noted this only occurs @...
April 25, 2019