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P0300 Diagnostic Trouble Code Discussion for May 2013

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2003 Nissan Murano SE 3.5L Misfire VIN: JN8AZ08T03
P0300: Multiple Misfire Detected. Vehicle came into shop with p0300. It has a dead miss on clinder#1 replaced coil and sparkplugs. i even swapped the injectors around to see if the misfire would change to different cylinder. Did a compression test is at 180 psi. Im lost here what can i be over...
May 01, 2013
2005 Ford Taurus SE 3.0L Poor Idle Quality VIN: 1FAFP53U65
P0300: Missfire. Vehicle Came In Not Running Replaced Fuel Pump Now Has Fuel Pressure and Runs. Test Drove And Problem Now Is A Large 300 RPM Surging Idle And It Will Drive For A Period Of Time At 1500 RPM 30 MPH And Then Slowly Decrease To Idle Range TPS Shows Closed Throtlle...
May 02, 2013
2000 Mercedes-Benz S500 Guard 5.0L Hesitation, Surge, Misfire, MIL Lamp on VIN: WDBNG75J4Y
P0300: Multiple misfires detected. Could not get starter to engage, new battery was discharged. Renewed starter and vehicle cranked and started. Ran poorly and would not accelerate. Scanned multiple times, finally on OBD II setting (Launch X-431) was able to get misfire codes and Mil started fl...
May 03, 2013
2005 Ford Taurus SE 3.0L Poor Idle Quality VIN: 1FAFP53U65
P0300: Missfire. Vehicle Came In Not Running Replaced Fuel Pump Now Has Fuel Pressure and Runs. Test Drove And Problem Now Is A Large 300 RPM Surging Idle And It Will Drive For A Period Of Time At 1500 RPM 30 MPH And Then Slowly Decrease To Idle Range TPS Shows Closed Throtlle...
May 04, 2013
2007 Ford F-250 Super Duty XLT 6.8L Misfire, MIL Lamp on VIN: 1FTSW21Y47
P0300: Random Misfire Detected. Customer came in with a P0300, but never had any misfire symptom. We replaced all 10 plugs and coils (carquest) coils and after driving it for a day the P0300 comes back. Weve never seen a misfire, just fighting a light. We have heard a bad cam sensor can caus...
May 06, 2013
2005 Scion tC (Car) 2.4L Poor Idle Quality, Misfire VIN: JTKDE17795
Hey guys, I feel like this one's staring me in the face and I just can't get it. It has a random miss at idle that affects all cylinders and the kicker is it goes away and PURRS when I add 20% injector volume on my scanner. Lean miss, right? No specific cylind...
May 06, 2013
2002 Pontiac Grand Prix SE 3.1L Excessive Emissions, Misfire, MIL Lamp on VIN: 1G2WK52J32
P0300: Multiple Cylinder Misfire Detected. ... came back aprox 500 mi later with same code, replace cat again with a OE unit, and new front and rear O2's. Back again with p0420 and p0300 after aprox 50 mi. Cyl #4 has a very slight miss, cant feel it but the verus is show...
May 07, 2013
2005 Scion tC (Car) 2.4L Poor Idle Quality, Misfire VIN: JTKDE17795
Hey guys, I feel like this one's staring me in the face and I just can't get it. It has a random miss at idle that affects all cylinders and the kicker is it goes away and PURRS when I add 20% injector volume on my scanner. Lean miss, right? No specific cylind...
May 07, 2013
1999 Volkswagen EuroVan MV 2.8L Hesitation, Misfire, MIL Lamp on VIN: WV2MH2704X
P0300: Random cylinder misfire. Thank all of you in advance for your time and input! One of our customers is in the car flipping business and brought us this van to go through. When we first got the van we found the engine started right up but missfired badly on cylinders 1 and 6. We repla...
May 07, 2013
2001 Chevrolet Express 1500 5.0L Misfire VIN: 1GCFG15M01
P0300: Multiple Cylinder Misfire Detected. hello techs,have a 2001 chevy express 1500 5.0 has codes p1381 and po300 when customer brought it to me it was a no start it had a bad distributor cap had some condensation in it, found tsb,cleaned distributor vents, where ok,customer supplied cap,then called ...
May 08, 2013
2006 Ford E-150 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTRE14WX6
P0300: Random misfire. ... for Rough idle, MIL flashing. Only happened when vehicle was sitting at long lights. Would run better above 30mph. Originally found P0307 and P0304 misfire along with P0300 and P0316. Vehicl...
May 08, 2013
2002 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: 2GCEK19T22
P0300: Multiple Cylinder Misfire Detected. miss at idle and under light load. miss is all bank one, moved coils, plugs, wires, cleaned injector rail, moved injectors, bank 1 and bank 2 o2 sensors, all of them to other side. no change. replaced fuel filter. b1s2 reads 800 and b2s2 reads around zero. rep...
May 09, 2013
2003 GMC Savana 1500 4.3L Misfire VIN: 1GTFG15X03
P0300: Multiple Cylinder Misfire Detected. Are there any suggestions from anyone? It would be of a big help.
May 10, 2013
2004 GMC Yukon SLE 4.8L Poor Idle Quality, Surge, Misfire VIN: 1GKEK13V74
P0300: Multiple Cylinder Misfire Detected. ... L. This truck belongs to a used car lot so I don't have much history about it. Here is the problem, it came in idling rough, fuel pressure is good, I checked for all kinds of vacuum leaks with a smoke machine and found none, even checked the purge valve if...
May 10, 2013
1998 Chevrolet K1500 Suburban 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3GNFK16R1W
P0300: Multiple Cylinder Misfire Detected. The customer complaint is that it has a miss/hesitation at idle and light acceleration, the problem started after he went threw the automatic car wash, it straigtened out later in the day then the next morning it started with the miss again and has been there ...
May 13, 2013
2003 Chevrolet Malibu 3.1L Misfire VIN: 1G1ND52J83
P0300: Multiple Cylinder Misfire Detected. ... post, and for any help that you can offer. This vehicle comes from another shop with a p0300 after installing a used engine. They replaced plugs, wires, and ignition coils. We replaced ignition module as well. the misfire seems to be ignition related becau...
May 13, 2013
2004 Chevrolet Silverado 2500 6.0L Misfire VIN: 1GCHK29U54
P0300: Multiple Engine Misfire Detected. This truck misfires on cylinder #1 at idle only, hot or cold. Cylinder #8 has less 1/10 the misfire counts. Freeze frame shows DTC set at idle too. I pulled the spark plugs because the customer said they had been changed, he thought with Split-Fire plugs but t...
May 13, 2013
2009 Chevrolet Malibu LS 2.4L Hesitation, Poor Fuel Economy, MIL Lamp on VIN: 1G1ZG57B79
P0300: random misfire. replaced both actuators cleared codes and test drove. symptoms persist but no codes returned within 12 drive cycles. checked cat for blockage all seemed ok. please help!!! this thing is throwing me for a loop and the customer is from out of town in our waiting...
May 13, 2013
2004 Chrysler PT Cruiser GT 2.4L Misfire VIN: 3C8FY78G74
P0300: Multiple Cylinder Misfire Detected. Vehicle came in 2 months ago with these same codes, we couldn't duplicate at the time. Replaced plugs and wires because they were due. KV checked the coil, good output from both coils. Fast forward to today. Now it misses at idle (not every time, misses about...
May 13, 2013
2005 Nissan Sentra 1.8L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 3N1CB51D25
P0300: Multiple Misfire Detected. ... in from a used car dealer who is trying to get it to pass emissions so they can sell it. It has been worked on by many technicians. I am supposedly the sixth tech to work on it. When first got it it would not run very well and had a p0300 code and air fuel...
May 13, 2013
2008 Volkswagen Eos lux 2.0L Hesitation, Cuts out, Poor Fuel Economy, MIL Lamp on VIN: WVWFA71F18
P0300: random misfire. EPC light on, when cold problem seems worse. According to Mitchell I checked voltage at the low pressure fuel pressure sender. Mitchell says I should have ground on 1 term, 5 volt on another, and bat voltage on 3rd term. I have ground on 1 and 5 volts on both ...
May 13, 2013
2006 Audi A3 2.0L Misfire, MIL Lamp on VIN: WAUMF78P26
Hello Audi/VW Techs. This A3 has a pattern of running rough and misfiring for about 30 seconds when cold, then it runs perfect all day. High and low fuel pressure are within specs. Coils have been updated. The interesting thing is that when it runs rough my re...
May 14, 2013
2008 Chrysler Town & Country (Van) LX 3.3L Hesitation, Surge, Misfire VIN: 2A8HR44H48
P0300: Random Misfire. This vehicle came in with a lack of power and hesitation under load. If you drive it at medium cruise or a light load the problem does not exist. The cam and crank have been scoped several times and good amplitude and signature with no drop outs. The ground an...
May 14, 2013
2007 Volkswagen Beetle 2.5 2.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3VWRG31Y27
P0300: Random misfire. Hello Everyone, I have a vehicle that idles rough and misfires when cold. After it warms up for about 45 seconds it run fine. We replace spark plugs and mass air flow sensor and that didn't help. I was wondering if someone can lead us in the right direction. W...
May 14, 2013
2004 Chevrolet S10 LS 4.3L Misfire, MIL Lamp on VIN: 1GCDT13XX4
P0300: Multiple Cylinder Misfire Detected. This truck came in with a misfire at idle and on moderate and hard accel. but it goes away if you lift the rpm very slighty off idle. With the scanner on it shows cylinder #3 on misfire monitor. I found #3 wire and the distributor cap corroded at dist cap so r...
May 15, 2013
2008 Mini Cooper S 1.6L Poor Idle Quality, MIL Lamp on VIN: WMWMF73538
This car came in for check engine light and poor idle. Car idles poorly but runs great going down the road. I have smoked it several times and not found any vacuum leaks. Spark plugs look good and are correct. The fuel pressure readings on data stream seem goo...
May 15, 2013
2006 Audi A3 2.0L Misfire, MIL Lamp on VIN: WAUMF78P26
Hello Audi/VW Techs. This A3 has a pattern of running rough and misfiring for about 30 seconds when cold, then it runs perfect all day. High and low fuel pressure are within specs. Coils have been updated. The interesting thing is that when it runs rough my re...
May 16, 2013
2010 BMW X5 M 4.4L Misfire VIN: 5YMGY0C5XA
P0300: throttle valve angle intake manifold vacuum correlation. misfiring really bad seams to be at least three cylinders. Checked coils ok. checked compression ok. Can not check fuel trims because it is in a limp mode. Scan tool for some reason doesn't have pid for mass air flow sensor. I think it may be the fuel injector...
May 16, 2013
2002 Jeep Grand Cherokee Laredo 4.0L Misfire, MIL Lamp on VIN: 1J4GW48S02
P0300: Multiple Cylinder Misfire Detected. Vehicle came in with complaint of overheating and shake, lack of power etc. Found above codes. Checked plugs etc. (New) Since vehicle has high mileage we replaced crank sensor. Coil pack had what appeared to be a small crack and we replaced it also.Engine ran ...
May 16, 2013
2006 Jeep Wrangler Unlimited 4.0L Misfire, MIL Lamp on VIN: 1J4FA44S16
P0300: Multiple Cylinder Misfire Detected. Hello Gentlemen And Ladies this one came in two months with a #5 cylinder miss and I discovered a worn camshaft and lifter on # 5 Exhaust valve which blew my mind never thought a 4.0 liter with 50,000 miles could ever have a worn cam and lifter reminds of the ...
May 16, 2013
2008 Chrysler Town & Country (Van) LX 3.3L Hesitation, Surge, Misfire VIN: 2A8HR44H48
P0300: Random Misfire. This vehicle came in with a lack of power and hesitation under load. If you drive it at medium cruise or a light load the problem does not exist. The cam and crank have been scoped several times and good amplitude and signature with no drop outs. The ground an...
May 17, 2013
2004 Kia Spectra 1.8L Stall, Misfire VIN: KNAFB12104
P0300: Random Cylinder Misfire Detected. this lil car runs fine at idle and down road until u go pass a car then slow down it starts missfiring.or if u put it in gear under hard load it and then let off it missfires not while underload but at idle after the load is put on it like when u stop and go a...
May 17, 2013
2007 Jeep Liberty Sport 3.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1J4GK48K87
P0300: Multiple Cylinder Misfire. misfire at idle if i give it some gas to raise the idle itthe idle jumps up to 2500 rpm and stays there for at least five seconds before it falls down to where the idle is suposed to be
May 21, 2013
2007 Chevrolet Tahoe LTZ 5.3L Misfire, MIL Lamp on VIN: 1GNFK13007
P0300: Multiple Engine Misfire Detected. ... head a bit. Car came in with the dash lit up and a p0300 stored. Data showed number 2 cyl counting up at idle only. Swapped plugs and coil and miss stayed with 2. Fuel pressure is good Injectors ohm out ok and flow identical volume Pulled valve cover and...
May 24, 2013
1998 Chevrolet Malibu 3.1L Misfire VIN: 1G1ND52M1W
P0300: Multiple Cylinder Misfire Detected. Cylinder 4 misfire at 60-70 mph only. Fuel pressure good. Injector pressure drop good. Compression is good. Wondering if anyone has run across this or has any suggestions. Thank you!
May 29, 2013
1996 Saab 900 SE Turbo 2.0L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: YS3DF75N9T
P0300: misfire. This car initially had a lean code that comes and goes. The oxygen sensor is not switching according to the ecu. 3 upstream oxygen sensors all do not switch properly and mostly sits at .49v. The flow chart for p1171 says to take a 1.5v battery to check the s...
May 31, 2013