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P0300 Diagnostic Trouble Code Discussion for April 2008

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2001 Mitsubishi Montero XLS 3.5L Misfire, MIL Lamp on VIN: JA4MW31R31
P0300: Random Misfire Detected. Hello any Techs I have a Mitsubishi Montero thats giving me a hard time I don't want to keep throwing parts at it customer brought vehicle after smog check he was told that readings were not good even though it passed that he should have it checked after diggi...
April 01, 2008
2002 Honda CR-V EX 2.4L Poor Idle Quality, Stall, MIL Lamp on VIN: JHLPD78492
P0300: Multiple Misfire Detected. Runs like the valve timing is off and/or the valves are hanging open. Immidately trips a code P0341. The diagnostics in alldata are pretty vague. Suspect a problem in the VTC actuator. Any suggestions? Thanks.
April 02, 2008
2002 Mercedes-Benz C240 2.6L Hesitation, Misfire, MIL Lamp on VIN: WDBRF61J02
P0300: random misfire. i have a 2002 m/b c240 with 2.6 v6 with mil light on. test drove car; had miss and ran rough, car when into limp mode. check wires, coils, spark plug seem ok. cleared light test drove car again car runs good no miss. any ideas? thank you for your help
April 04, 2008
2001 Nissan Pathfinder LE 3.5L Hesitation, Misfire, MIL Lamp on VIN: JN8DR075Y1
P0300: Multiple Misfire Detected. Greetings Nissan master techs. I have been humbled by several recurring misfire codes and now a cat efficiency code. Initially the customer noticed severe hesitation on acceleration that became worse after warm up. The plugs were original so were replaced, as ...
April 07, 2008
2000 Oldsmobile Intrigue GX 3.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G3WH52HXY
P0300: Multiple Cylinder Misfire Detected. i have a 2000 oldsmobile with a 3.5 in it for some reason it has a misfire on cylinders 2 and 4 and it does it most of the time, although sometimes it will be fine.if your watching it on the scanner sometimes other cylinders will misfire once or twice but most...
April 07, 2008
1997 Dodge Stratus ES 2.5L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 1B3EJ56H4V
P0300: Multiple Cylinder Misfire Detected. Engine runs rough at idle and hesitates on acceleration. I tried to motorvac the vehicle but no help. Fuel pressure is good. Volume is good. Checked for vacuum leaks with smoke machine. No leaks found. I'm thinking I have partially plugged injectors. I don't r...
April 08, 2008
2000 Nissan Maxima SE 3.0L Misfire, MIL Lamp on VIN: JN1CA31DOY
P0300: Multiple Misfire Detected. This is the vehicle from hell. Now I have a problem with cylinders 4 & 6. Have replaced both coil two times, one with a NAPA and one with A factory coil. #2 coil was replaced less than 629 miles. I saw a some replies that indicated the wiring harness may b...
April 08, 2008
2001 BMW 325Ci 2.5L MIL Lamp on VIN: WBABS33461
P0300: random miss. hi group have this 01 325ci ck engine on with 17 codes stored after reset cold in a.m. random miss/lean/during start up after a few minutes car is perfect reset no codes.i suspent vac leak ,hook up smoke machine no leaks detected i am going to try it again nex...
April 09, 2008
1997 Chevrolet Blazer 4.3L Misfire VIN: 1GKCS13W2V
P0300: Multiple Cylinder Misfire Detected. has misfire,worse @idle.ran good prior to repairs,double checked all work by 2 senior techs,any chance air can enter fuel system and cause multiple misfire,we are stumped because vehicle ran good prior to repairs.thanks in advance for any advice.
April 09, 2008
1999 Oldsmobile Aurora 4.0L Poor Idle Quality, Hesitation, Misfire VIN: 163GR62C0X
P0300: Multiple Cylinder Misfire Detected. This vechicle came in for MIL and poor idle (miss at idle) I pulled codes, found the laundry list, and constant misfires on #5. Since this vehicle is a regular in my shop, I peformed a inj. flow test and resistance test since I just istalled plugs and wires ab...
April 09, 2008
1997 Dodge Stratus ES 2.5L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 1B3EJ56H4V
P0300: Multiple Cylinder Misfire Detected. Engine runs rough at idle and hesitates on acceleration. I tried to motorvac the vehicle but no help. Fuel pressure is good. Volume is good. Checked for vacuum leaks with smoke machine. No leaks found. I'm thinking I have partially plugged injectors. I don't r...
April 10, 2008
1999 Saab 9-5 SE 2.3L Excessive Emissions, Poor Idle Quality, Stall VIN: YS3EF48E5X
P0300: random engine misfire. ... engine as sublet to local rebuilder. engine rebuilt and installed by us. Engine runs great when driving, at idle it struggles to keep running and sets two codes p0300, and p1251. we cleared p1251 with resetting throttle motor...
April 10, 2008
2001 Acura CL Premium 3.2L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: 19UYA42441
P0300: Multiple Misfire Detected. 2000 acura tl3.2 codes p0303 p0305 p0306 coils test good injectors good , fuel pressure ok, 5 gas are hc 6ppm no 0ppm co o.oo% co2 14.3 % o2 o.o car runs good then starts to stumbl but no missfire
April 11, 2008
2003 Chevrolet Corvette 50th Anniversary Edition 5.7L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1G1YY32GX3
P0300: Multiple Engine Misfire Detected. ... brother who is a GM tech. with about 2 decades of experience. The car can be made to misfire in the bay by power braking. Power balance test revealed cyl. #2 was a consistent misfire. The misfire starts at about 1400 RPM. Attempted repairs were new valve s...
April 11, 2008
2001 Acura CL Premium 3.2L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: 19UYA42441
P0300: Multiple Misfire Detected. 2000 acura tl3.2 codes p0303 p0305 p0306 coils test good injectors good , fuel pressure ok, 5 gas are hc 6ppm no 0ppm co o.oo% co2 14.3 % o2 o.o car runs good then starts to stumbl but no missfire
April 12, 2008
1999 BMW 328i 2.8L Misfire, MIL Lamp on VIN: WBAAM5533X
P0300: random misfire. i dont have a smoke machine to check intake gasket,being that the misfire is at idle only.so I'm thinking that maybe cam sensor's bad.info is limited for this so if any of you BMW techs could lead me in the right direction it would be grateful thanks
April 12, 2008
1999 BMW 328i 2.8L Misfire, MIL Lamp on VIN: WBAAM5533X
P0300: random misfire. i dont have a smoke machine to check intake gasket,being that the misfire is at idle only.so I'm thinking that maybe cam sensor's bad.info is limited for this so if any of you BMW techs could lead me in the right direction it would be grateful thanks
April 15, 2008
2003 Chevrolet Corvette 50th Anniversary Edition 5.7L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1G1YY32GX3
P0300: Multiple Engine Misfire Detected. ... brother who is a GM tech. with about 2 decades of experience. The car can be made to misfire in the bay by power braking. Power balance test revealed cyl. #2 was a consistent misfire. The misfire starts at about 1400 RPM. Attempted repairs were new valve s...
April 15, 2008
2003 Volkswagen Passat GL 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WVWMD63B03
P0300: Random Misfire Detected. ... who attempted to disassemble and clean the throttle valve himself. Of course when he was done it would barely run. It had a list of codes as long as your arm. BTW We have a Modis w/the euopean sotware - just updated. As you can see we covered the basics -N...
April 15, 2008
2005 Chevrolet Impala LS 3.8L Misfire VIN: 2G1WH52K25
P0300: Multiple Cylinder Misfire Detected. Hello everyone, this has a #2 cylinder miss fire. Ignition is good, very healthy spark. Injector fires as good as the other cylinders and fuel drop is the same. compression is 165 on all cylinders. I have even pulled the plug out to see if it was sparking and...
April 16, 2008
2000 Toyota Avalon XL 3.0L Misfire VIN: 4T1BF288XY
P0300: Multiple Cylinder Misfire Detected. Good day to you all! I have one that is i little weird too me. It came in last friday with the complaint of bad gas mileage and the MIL coming on and off and no power. Of course the MIL was off when it got too me...no history codes or pending codes. It had a h...
April 16, 2008
1997 Pontiac Grand Am SE 2.4L Misfire VIN: 1G2NE52T8V
P0300: Multiple Cylinder Misfire Detected. ... misfire, P0300 set, misfire counters on scan tool confirm misfires on cyl 1 and 3. Not waste-spark companion cylinders. Check for spark - no spark on cyl 1 and 3. Replaced Ign. coil housing, springs and plug boots - no change. Replaced Ign. Module - no cha...
April 17, 2008
2002 Audi A4 3.0L Misfire, MIL Lamp on VIN: WAULT68E92
P0300: misfire. I have an intermittent misfire on #4. I swapped coils and plugs, miss still on #4. I have spark and noid light. It seems like it has to sit for 20-30 minutes before it acts up and only lasts for 30-45 seconds. I also hear slight valve noise. I am thinking lift...
April 18, 2008
2000 Chrysler Sebring JXi 2.5L Stall, Misfire, MIL Lamp on VIN: 3C3EL55H3Y
P0300: Multiple Cylinder Misfire Detected. ... any help. We have a 2000 Chrysler Sebring LXI Convertable with the 2.5 V6 engine. The car had a recent past history of stalling out. We would tow the car in and it would start right up (no codes)and run all day. After a couple of these episodes the owner ...
April 19, 2008
2005 Dodge Ram 1500 Truck ST 4.7L Stall, MIL Lamp on VIN: 1D7HU18N95
P0300: Multiple Misfire Detected. dodge techs i am working on 2005 dodge ram 1500 p/u 4.7 liter.has po300 intermitten.i replaced all spark plugs.take it for test drive no codes and runs fine.customer picked up to truck and 2 days later light is back on with same code.when monitor the missfire ...
April 19, 2008
2002 Mitsubishi Eclipse GT 3.0L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: NOVISIBLEV
P0300: Random Misfire Detected. ... one drives me nuts for 2 days. I have this spidey in the shop originally came in with mil on had lean codes for both banks, fuel trims were over 20% at idle found lower intake manifold g-t leaking that brought short term trim to normal at idle but while dr...
April 20, 2008
2004 Mazda MPV LX 3.0L Misfire VIN: JM3LW28A24
P0300: Multiple Misfire Detected. Hi group, first thank you for your time. This 2004 mazda 3.0l came in with a blinking ses light and misfire at all times. Replaced coil no.4 and coil boots, also leaky vacuum hose in back of the manifold, codes erased felt a big change, but there it goes as so...
April 21, 2008
2001 Nissan Pathfinder LE 3.5L Hesitation, Misfire, MIL Lamp on VIN: JN8DR075Y1
P0300: Multiple Misfire Detected. Greetings Nissan master techs. I have been humbled by several recurring misfire codes and now a cat efficiency code. Initially the customer noticed severe hesitation on acceleration that became worse after warm up. The plugs were original so were replaced, as ...
April 21, 2008
2005 Nissan Quest 3.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: 5N1BV28U94
P0300: Multiple Misfire Detected. This van has a multiple misfire code that is driving me nots. I smoked it to make sure there were no leaks and could find none. Checked MAF and everything seems normal. Looked at the front plugs and they are platinum and appear not to be in bad shape. My scann...
April 21, 2008
2003 Saab 9-3 Arc 2.0L Poor Idle Quality, Hesitation, Surge, MIL Lamp on VIN: YS3FD49Y53
P0300: random cyl missfire. ... familliar with the new style 9-3 than I. This vehicle came in for some normal service tires etc,but also a complaint of a poor run. The conditions are upon a cold start after sitting over night the engine will run rough at first occasionally setting a chec...
April 23, 2008
2003 Volkswagen Beetle GLS 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3VWCD21CO3
P0300: random. well this is what happening with this bug had codes listed on cold start this unit fires up missing on 1 and 2 in about 60 seconds it runns fair quits missing any how i swaped coils 1234 to 4321 and no change fine no coil problem so did same with injectors and...
April 24, 2008
1995 Jaguar XJS 4.0L Excessive Emissions, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: SAJNX2741S
P0300: Random Misfire. According to the scanner Long Term Fuel Trim on both bank 1 and 2 is +57.8%. Short Term on bank 1 is +25%, short term on bank 2 is -25%. With a scope connected to the back of the PCM probing the oxygen sensor wires, they read +4.9v KOEO. When the engine is st...
April 29, 2008