Join Now
International Automotive Technicians Network

P0300 Diagnostic Trouble Code Discussion for October 2014

Multiple Misfire Detected


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2001 Chevrolet Silverado 1500 5.3L No Start, Cuts out, Stall VIN: 1GCEK19T51
P0300: Multiple Cylinder Misfire Detected. ... on the highway and unable to restart. Customer did state that it stalled several times before and would restart after a cool down period. Battery was dead from customer prolonged cranking. Jumped battery. After several attempts was able to start and drive ...
October 02, 2014
2006 Volkswagen Golf GTI 1.8T 1.8L Poor Idle Quality, Misfire, lean VIN: 9BWDE61J86
This vehicle is a problem child! Misfires and runs lean only on cold starts for maybe 60 sec. Once secondary air pump turns off it will run perfect. I have changed every thing that was backed up by failed tests. The last thing was smoke testing for vacuum leak...
October 02, 2014
1999 Chevrolet S10 4.3L Hesitation, Surge, Misfire, MIL Lamp on
P0300: Multiple Cylinder Misfire Detected. Truck came in with p0171 p0174 p0300 p0305 check injectors ok check compression 150 all check leak down test install new injectors new spark plug, wires, distributor rotor distributor cap, notice voltage at number 5 was 30kv the rest ok fuel filter was plugged...
October 07, 2014
1998 Mazda Millenia 2.5L Poor Idle Quality, Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: JM1TA2216W
P0300: Multiple Misfire Detected. ... customer has worked on it themselves and have replaced a bunch of parts (dist,cap and rotor, mass air, fuel pump) but it still has the problem. It has a p0300 for misfire. What we have found is that when you accelerate normal or hard it shuts off spark to ...
October 07, 2014
1999 Chevrolet S10 4.3L Hesitation, Surge, Misfire, MIL Lamp on
P0300: Multiple Engine Misfire Detected. Truck came in with p0171 p0174 p0300 p0305 check injectors ok check compression 150 all check leak down test install new injectors new spark plug, wires, distributor rotor distributor cap, notice voltage at number 5 was 30kv the rest ok fuel filter was plugged...
October 08, 2014
2007 Chevrolet Impala LT 3.9L Surge, Cuts out VIN: 2G1WS55R17
P0300: Multiple Engine Misfire Detected. Greetings to all recieved this car from local repair shop.when driving this car on local streets the car shuts down and it will restsrt with no problems.i drove this several times and it seems to drop right out on deceleration.feathering the throttle coming to...
October 09, 2014
2006 Honda Pilot EX 3.5L Misfire VIN: 5FNYF18406
P0300: Random Misfire Detected. vehicle came back to us running rough and both vtm 4 light and cel back on. found oil in all sparkplug holes. upon talking to customer we discovered that another shop had put head gaskets on 5 mos. ago. we replaced both valve cover gaskets and cleaned out spar...
October 09, 2014
2005 Chevrolet Astro 4.3L Misfire, MIL Lamp on VIN: 1GNEL19X45
P0300: Multiple Cylinder Misfire Detected. ... p0306.i found p0300 and p1134.clear codes and road test. car runs well.p0300 returned. pull up-hill engine light flashes,cyl.6 misfires on current counters.#6 comp.= 150 psi. plug wire 20k plus volts.no arcing at wire. swap #...
October 10, 2014
2007 Jeep Patriot Limited 2.4L MIL Lamp on VIN: 1J8FF28W37
P0300: Multiple Cylinder Misfire Detected. Car came in with these codes and 2 qt low on oil. Changed exhaust cam sensor and crank sensor. Performed oil flush. Scoped crank and cam sensor signals. Timing appears to be good, using know good waveform. There is a voltage spike occuring with regular frequen...
October 11, 2014
2006 Honda Pilot EX 3.5L Misfire VIN: 5FNYF18406
P0300: Random Misfire Detected. vehicle came back to us running rough and both vtm 4 light and cel back on. found oil in all sparkplug holes. upon talking to customer we discovered that another shop had put head gaskets on 5 mos. ago. we replaced both valve cover gaskets and cleaned out spar...
October 13, 2014
2007 Chevrolet Suburban 1500 Z71 5.3L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 3GNFK16377
P0300: Multiple Engine Misfire Detected. Officially stuck on this one. Misfire at idle Cyl. #3 Compared all readings with non-misfiring cylinder and both are identical - 150 lbs compression - 10% cylinder leak down - running compression the same - keep in mind on this LC9 that cylinder #3 is not one ...
October 15, 2014
2012 Jeep Liberty Sport 3.7L Misfire VIN: 1C4PJLAK0C
P0300: Random misfire. This Jeep liberty is difficult to start and when it does start, it runs horribly. After about a minute the catalytic converter on the drivers side glows red hot. All cylinders have 160 psi compression. There is spark to all cylinders. All the injectors are fir...
October 15, 2014
2001 GMC Jimmy SLE 4.3L Poor Idle Quality, Cuts out, Misfire VIN: 1GKDT13W51
P0300: Multiple Cylinder Misfire Detected. Customers said problem occured after start up, no prior complaints, check engine light on runs rough at idle or under load, found codes PO122, PO155, PO300, PO440, PO452. Miss fire counts in history on #5 and #6 are 40 to 50k each other cylinders range from a ...
October 16, 2014
2012 Jeep Liberty Sport 3.7L Misfire VIN: 1C4PJLAK0C
P0300: Random misfire. This Jeep liberty is difficult to start and when it does start, it runs horribly. After about a minute the catalytic converter on the drivers side glows red hot. All cylinders have 160 psi compression. There is spark to all cylinders. All the injectors are fir...
October 17, 2014
2002 Mitsubishi Lancer ES 2.0L Poor Idle Quality VIN: JA3AJ26E62
P0300: Random Misfire Detected. rough idle vacuum readings low 13, dtc po300 sets within a couple of minutes, ran car off of acetalyne not much change, scoped cmp and ckp seperatly pattern ok installed new timing belt crank key way looked ok, timing marks dead on, smoked intake npf , ignitio...
October 23, 2014
2004 Honda Civic DX 1.7L No Start VIN: 2HGES16384
P0300: Random Misfire Detected. hello all, i have a customers Honda here that seem to be flooding out (to the point of a no start and un accurate compression readings). the info i pull up on libraries dose not match this vehicle fuel delivery design. as in pressure regulator design. the regu...
October 26, 2014
2005 Audi A4 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WAULC68E65
P0300: Random missfire. The car runs good as long as it doesn't rain. Ok customer said on a day that is raining he will go out in the morning and start the car and it starts good and no check engine light on he starts going down the road car runs good until he steps on the brake and ...
October 30, 2014