Join Now
International Automotive Technicians Network

P0300 Diagnostic Trouble Code Discussion for December 2013

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
2007 Mazda CX-7 Touring 2.3L Poor Idle Quality, Hesitation, Misfire
P0300: Random Misfire Detected. Hi guys, I inherited this one and could use some help. Vehicle presented with a dead missfire on cylinder 2. Coils and plugs were switched and problem stayed on 2. So injector flush completed and upper intake clean done. Missfire 2 seemed to be gone road teste...
December 01, 2013
2005 Toyota Sienna CE 3.3L Poor Idle Quality, Misfire VIN: 5TDZA29C35
P0300: Multiple Cylinder Misfire Detected. ... Light on, Hard Start and lacking power since T-Belt Install 120kms Previously at another shop. Scan test showed only P0016, and P0018 only. I advised the customer that maybe the timing belt is off a tooth or two. Pulled covers, found crank pulley approx. 3...
December 01, 2013
2002 Chevrolet Astro LS 4.3L MIL Lamp on VIN: 1GNDM19X22
P0300: Multiple Cylinder Misfire Detected. ... this my first post, i'm a big fan of iatn. I have this astro van in my shop for the first time and having a bit of a head scratcher. All the work was done at another shop and previous shops have been unable to repair this problem. The vehicle runs like a c...
December 02, 2013
2000 Dodge Ram 1500 Laramie 5.9L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1B7HF16Z9Y
P0300: Random cylinder misfire. Customer came in with a running rough issue and a check engine light, never been tuned up has 100,xxx miles. Replaced cap,rotor,plugs,wires,air filter,3 injectors... Still running really bad. Checked firing order 3x. Suspect internal vacuum leak replaced manif...
December 02, 2013
2011 Volkswagen CC Sport 2.0L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: WVWMN7AN9B
P0300: . hey volkswagon techs we have a 2011 volkswagon cc sport changed oil in we used oe oil and filter per customer got done car wont idle. oil pressure lite on and setting numerous misfire codes oil is full and this thing idles like a tractor valve train is really ...
December 02, 2013
2007 Mazda 3 i 2.0L MIL Lamp on VIN: JM1BK32F97
P0300: Random Misfire Detected. This one is a little confusing to me. Car runs lean off idle. Runs like a champ. Dont let the mileage fool you. Car has been well maintained and is very clean. Sitting at idle the lt fuel trim is at 3-ish. As soon as you open the throttle plate (even barely) t...
December 03, 2013
2011 Volkswagen CC Sport 2.0L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: WVWMN7AN9B
P0300: . hey volkswagon techs we have a 2011 volkswagon cc sport changed oil in we used oe oil and filter per customer got done car wont idle. oil pressure lite on and setting numerous misfire codes oil is full and this thing idles like a tractor valve train is really ...
December 03, 2013
2007 Mazda 3 i 2.0L MIL Lamp on VIN: JM1BK32F97
P0300: Random Misfire Detected. This one is a little confusing to me. Car runs lean off idle. Runs like a champ. Dont let the mileage fool you. Car has been well maintained and is very clean. Sitting at idle the lt fuel trim is at 3-ish. As soon as you open the throttle plate (even barely) t...
December 04, 2013
1997 Mercedes-Benz C230 2.3L Cuts out, Stall
P0300: Random Miss Fire. Ok need help here My hair is all gone now got 12 hours into this problem. Car was towed in as a no run it will start and run for 30 sec to 1 1/2 min fine and smooth then just dies. Not dropping fuel pressure, spark, or injector pulse. Once it dies it starts ri...
December 04, 2013
2003 Dodge Neon SXT 2.0L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1B3ES56CX3
P0300: Multiple Cylinder Misfire Detected. I've never had this much trouble diagnosing a drivability problem! This car was towed in, customer said the catalytic converter had been glowing red hot and the vehicle running poorly. Sure enough, barely idles and barely limps into shop. Many codes, I look at...
December 05, 2013
1997 Mercedes-Benz C230 2.3L Cuts out, Stall
P0300: Random Miss Fire. Ok need help here My hair is all gone now got 12 hours into this problem. Car was towed in as a no run it will start and run for 30 sec to 1 1/2 min fine and smooth then just dies. Not dropping fuel pressure, spark, or injector pulse. Once it dies it starts ri...
December 05, 2013
2003 Dodge Neon SXT 2.0L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1B3ES56CX3
P0300: Multiple Cylinder Misfire Detected. I've never had this much trouble diagnosing a drivability problem! This car was towed in, customer said the catalytic converter had been glowing red hot and the vehicle running poorly. Sure enough, barely idles and barely limps into shop. Many codes, I look at...
December 06, 2013
2006 Chevrolet Impala LT 3.9L Poor Idle Quality, Surge, Misfire, MIL Lamp on
P0300: Multiple Engine Misfire Detected. Vehicle came in with ABS/trac light on and CEL. Vehicle had an engine noise, sounded like a ticking/knocking from B1 under valve cover area. Also found waterpump and crossover gaskets were leaking but no sign of overheating. Passes block test for head gasket l...
December 10, 2013
2005 Chevrolet Silverado 1500 LS 5.3L No Start, MIL Lamp on VIN: 2GCEK13TX5
P0300: Multiple Cylinder Misfire Detected. We are working on a 2005 Silverado 1500. We scanned computer for codes. There was a code for the fan control circuit and random misfire. Checked and found a large amount of moisture in the ECM plug. We cleaned and applied dielectric grease to seal and connecto...
December 11, 2013
2006 Cadillac CTS 3.6L Misfire VIN: 1G6DP57756
P0300: Engine Misfire Detected. I am not familiar with this engine. Live data on scan tool shows miss's in cylinders #1 & #2 but primarily in #1. History shows miss in cylinders #1, #2, #3 & #4. Miss seems to be constant both at idle and while driving. Oil is about a quart high &...
December 16, 2013
2005 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Misfire VIN: 2GCEC19T65
P0300: Multiple Cylinder Misfire Detected. ... complaint, CEL on. Started after setting in about 20-30 degree weather for 2 days and has been present since that time. Checked codes and data, had P0300. Checked miss history, had misfire counts on cyls 1,3,5&7, cyl 1 had the highest counts and lower ...
December 16, 2013
2008 Lexus RX350 3.5L No Start, MIL Lamp on, Power loss VIN: 2T2GK31UX8
P0300: Randum misfire. ... Crank but no start; Low coolant due to a leak at Water pump. The story: Teen age driver; Was driving at 45 MPH when MIL came on along with VSC OFF and Traction Icon lights; soon after that she felt no response while accelerating. So she stopped, turned ke...
December 16, 2013
2006 Chevrolet Trailblazer LT 4.2L Misfire VIN: 1GNET16S46
P0300: Multiple Engine Misfire Detected. Thank you for reading this, I have a misfire at idle on number 6. I have smoke checked for vacuum leaks, Ramp tested coil and injector. Swapped coil and plug with cylinder #2 and it didn't change. Fuel pressure is at 60 PSI. Performed a fuel injector balance t...
December 17, 2013
2007 Audi A4 2.0L No Start VIN: WAUAF78E57
P0300: Random Misfires Detected. Hello Audi Techs: We have got a tow in that we discovered has oil in the intake and has flooded the Air Flow Meter. We did the crank case valve (recently) that is on the valve cover and the car still was smoking. We did find that the oil filter housing also ha...
December 18, 2013
2007 Volkswagen Touareg 3.6L MIL Lamp on VIN: WVGZE77L37
P0300: misfire. VW and Audi Tech, please help. Car came in complaint about loud vibration noise from engine area and check engine light on. We heard the noise from the fuel rail area. Install scanner, all misfire faults, cam fault possible due [...] low oil or timing chain re...
December 18, 2013
2004 Cadillac SRX 4.6L Misfire VIN: 1GYDE63A04
P0300: Engine Misfire Detected. Hello Guys and Gals. Please assist me with the O2 Heater issue I am having. Tested the Pwr feed and recieved 12 volts to the O2 sensor. To test the ground side, I connected a test light to positive and back probed the PPL/White wire on the harness side and see...
December 20, 2013
2004 Cadillac SRX 4.6L Misfire VIN: 1GYDE63A04
P0300: Engine Misfire Detected. Hello Guys and Gals. Please assist me with the O2 Heater issue I am having. Tested the Pwr feed and recieved 12 volts to the O2 sensor. To test the ground side, I connected a test light to positive and back probed the PPL/White wire on the harness side and see...
December 21, 2013
2003 Mazda Protege ES 2.0L Hesitation, Misfire, MIL Lamp on VIN: JM1BJ22593
P0300: Multiple Misfire Detected. This is the 4th time has been back same code. Customer reports that vehicle will hesitate and ses lamp comes on. I have never been able to duplicate the hesitation or misfire but the code is always there. Freezeframe data: 1900 rpm, 36%tps, ect 82 degc, iat 13...
December 21, 2013
1999 Honda Prelude 2.2L Stall, Misfire VIN: JHMBB6241X
P0300: Multiple Misfire Detected. Having a problem with this car after it sits out side when its cold. Starts up fine but after driving one block and coming up to a stop sign it idles real low and dies. Will start back up after cranking awhile but dies at the next stop sign. After that it runs...
December 23, 2013
2003 Saab 9-3 Arc 2.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: YS3FD49Y03
P0300: randon cyl misfire. ... code p2135 return immidiately. do not have a tech2 and out launce will not communicate. generic obd shows tps at 28% always. has no throttle response. Identafix and alldata say no diagnostic info for code p1681. replace ecm...
December 26, 2013
2003 Saab 9-3 SE 2.0L No Start, Cuts out, Stall VIN: YS3DF78K63
P0300: Random misfire. Car towed in, customer states was driving fine, then stumbled and died. It would crank but start and die. Checked Fuel pressure was 19 psi. Figured bad pump, replaced. It starts easier but still dies right after starting. Talk to a friend said try replacing cr...
December 27, 2013