P0300 Diagnostic Trouble Code Discussion for March 2007
Multiple Misfire Detected
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| Help Request | Posted | |
| 2000 Honda CR-V LX 2.0L Poor Idle Quality, Cuts out, Misfire VIN: JHLRD28461 P0300: Multiple Misfire Detected. vehicle presents when cold runs extremly rough at idle/ lean once starts to warm will idle but poorly and is drivable.map sensor at idle reads approx 1.4-1.5 volts with a vac reading of approx 14 inches... If it had one i would say EGR is stuck open only codes... |
March 02, 2007 | |
| 1998 Mazda MPV ES 3.0L Hesitation, Surge, MIL Lamp on VIN: JM3LV5235W P0300: Multiple Misfire Detected. ... badly. We pulled codes and found P0300, P0420 and P1345. Checked the plugs and found them to be worn down to electrode so we replaced them.Runs better but far from normal. 02 bank 1 is switc... |
March 02, 2007 | |
| 2001 Hyundai XG300 3.0L Poor Idle Quality, MIL Lamp on VIN: KMHFU42F01 P0300: Multiple Misfire Detected. hello all after we replaced timing belt 3 days later came back with check engine light on misfire code and other code .felt misfire at idle do you think possible bent valve cyl1,3,5 for one side cylinder head some one out there can help me with this problem th... |
March 03, 2007 | |
| 1999 Chevrolet Tahoe LS 5.7L Poor Idle Quality, Hesitation, Misfire VIN: 1GNEK13R6X P0300: Multiple Cylinder Misfire Detected. Cylinder 6 missfire, only while driving under light acceleration, heavy acceleration=no miss. Had spark at all cylinders but cap and rotor were corroded, replaced with new. Unchanged. Swapped cyl. 8 and 6 wires, unchanged. Checked plugs, Delco platinums only 6... |
March 05, 2007 | |
| 2002 Jaguar Vanden Plas 4.0L Poor Idle Quality, Misfire VIN: SAJDA24C82 P0300: random miss fire detected. HELLO GROUP: I need some help on this car, no matter what i do, it keeps on miss firing. Before injector flush it was showing miss fire cyl 1 2 and 4, now cyl 7 and 8. I've checked crank angle sensor wave form , it looked good. Inspected flywheel for warpage a... |
March 05, 2007 | |
| 2005 Volvo xc70 2.5L Excessive Emissions, Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: YVASZ59295 P0300: Random misfire. Hi folks- thought I'd run this one by you guys before I got in too deep. Car left him on the side of the road and was towed in. It started for me but is misfiring badly and running really rich. Exhaust will burn your eyes. Has a PO261 for #1 injector circuit ... |
March 05, 2007 | |
| 1998 Chevrolet Camaro Z28 5.7L Hesitation, Surge, Misfire VIN: 2G1FP22G3W P0300: Multiple Engine Misfire Detected. Hello GM techs, This is my 1998 SS Camaro and I dont much time to work on it. It has misfires on cylinders 1 and 6. The misfires are present more so at an idle and sometimes from an acceleration that comes from a deceleration when driving, not really present a... |
March 06, 2007 | |
| 1997 Ford Explorer Eddie Bauer 4.0L Hesitation, Misfire VIN: 1FMDU34E7V ... explorer- it is my personal vehicle- it would occasionally misfire at idle, but under load on accel was fine, accel was normal, power was normal; i decided to replace the plugs and wires since i do not know when they were last changed- it had autolites in ... |
March 06, 2007 | |
| 1999 BMW 528i 2.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WBADM6331X this car runs great in open loop, but has a problem as it warms up. misfireing is the only synptom, we used our scope on the primary side of the coils as a starting point, and i noted th amp draw of the coils droped form 7amp to .58amp as soon as the problem s... |
March 07, 2007 | |
| 2000 Jeep Cherokee Sport 4.0L Poor Idle Quality, f trim / O2 heater VIN: 1J4FF48S4Y P0300: Multiple Cylinder Misfire Detected. NO CODES CURRENTLY PENDING OR PRESENT!!! Engine is smooth & easy starting. Undermaintained & abused by hi mileage owner. "Tune" 6 components consisted of spark plugs / filters(not fuel filter however)& ignition coil ass'y being a 1 piece co... |
March 07, 2007 | |
| 2001 Oldsmobile Aurora 3.5L Hesitation, MIL Lamp on VIN: 1G3GR64H51 P0300: Multiple Cylinder Misfire Detected. THe mil light is on, code PO300 random mis-fire. Mis-fire data shows all cylinders are having mis-fires but not severe enough to feel. I cleaned the MAF sensor and checked fuel pressure, checks OK. Do they have intake issues, I spayed carb cleaner around and R... |
March 07, 2007 | |
| 1999 BMW 528i 2.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WBADM6331X this car runs great in open loop, but has a problem as it warms up. misfireing is the only synptom, we used our scope on the primary side of the coils as a starting point, and i noted th amp draw of the coils droped form 7amp to .58amp as soon as the problem s... |
March 08, 2007 | |
| 1999 Mercedes-Benz C230 Kompressor 2.3L Misfire VIN: WDBHA24G6X P0300: random misfire. ... with no drivability complaint but check engine light was on code p0302 stored. during road test noticed fuel trim was up to 21%. checked state of tune ok . replaced m/f sensor and re-tested fuel trim now at -3%. returned vehicle to customer. about a week l... |
March 08, 2007 | |
| 2006 Chevrolet Suburan 5.3L Surge, Misfire, MIL Lamp on VIN: 1GNEK16Z66 P0300: misfire. this sub has a mis fire on #7 cyl at idle if rpms raised to 1500 miss is gone.I have looked at the plug wire and coil swapped to different cyl.swapped injector checked fuel rail for obstruction.checked compression.smoked tested for vacumn leaks none found.pull... |
March 09, 2007 | |
| 1999 Dodge Ram 1500 Van 3.9L Misfire VIN: 2B6HB11X0X P0300: Multiple Cylinder Misfire Detected. Van came in with miss all the time, checked archives for tips,checked installed height of valves and found them with different installed heights so pulled heads for warranty and then found a crack in block surface. Got reman engine from same company, those val... |
March 09, 2007 | |
| 2003 GMC Savana 3500 6.0L Poor Idle Quality, Surge, MIL Lamp on VIN: 1GDJG31U73 P0300: Multiple Cylinder Misfire Detected. hey techs. got this gmc box van that runs great most of the time. every once in a blue moon.(twice in the last three weeeks this idle will flare up to 900 to 1000 rpm and hang up there. i thought i had bad iac motor. replaced it and then relearned idle . iac s... |
March 09, 2007 | |
| 2004 Honda S2000 2.2L MIL Lamp on VIN: JHMAP21464 P0300: Random Misfire Detected. ... missfire 1 and 4, and also random missfire, clear code. second time check engine light on with missfire #4 and factory code p1399 for igntion missfire. I usually run in to acura and honda with valve adjustment that is off and cause this, but at this time i... |
March 09, 2007 | |
| 2001 GMC Savana 3500 5.7L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1GTHG39R41 P0300: Multiple Cylinder Misfire Detected. hey fellow tecs i need help. this gmc savana 5.7 is giving me gray hair anyways i have a misfire on #5 and #7 changed plugs cap and rotor, first a standard motor cap then (ac delco) installed reman distribtor, scope patern was as good as it gets, replaced 5 &a... |
March 12, 2007 | |
| 1999 Mercedes-Benz ML320 3.2L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 4JGAB54E4X P0300: Random missfire. Vehicle stalls out at above 1/2 throttle with excessive missfires. Fuel pressure is good. Spark plugs are new. All coils operational. Vehicle idles good. Tested new maf sensor, no change. Checked voltage out puts from throttle actuator to ecm. Found from pin 7... |
March 12, 2007 | |
| 2004 Chevrolet Cavalier 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G1JC12F34 P0300: Multiple Engine Misfire Detected. ... cavalier with a 2.2 liter engine. this car has an obvious misfire at idle and more pronounced in drive or reverse. seems ok while driving unless you try to accelerate wot. code p0300b is set and show misfires on cylinders #1 and#4 only. checked emissions w... |
March 14, 2007 | |
| 1997 Dodge Ram 1500 Laramie 5.2L Poor Idle Quality, Misfire, MIL Lamp on, LOW POWER VIN: 3B7HF13Y9V thank's for your time people!i think codes were tripped by customer pulling off spark plug wires trying to pick out rough idle. after coil was replaced customer noticed lack of power compared to before.if you get rpm's over 3000 seems to come alive.also notice... |
March 14, 2007 | |
| 2001 Toyota Avalon XL 3.0L Misfire, MIL Lamp on VIN: 4T1BF28B01 P0300: Multiple Cylinder Misfire Detected. Dear fellow techs this should have been easy.This toyota came in for miss fire and flashing cel. Car never had spark plugs. removed manifold replaced spark plugs inspect coil and ohm check injectors reassembled all. No change in problem.swapped coil from good ... |
March 14, 2007 | |
| 2001 Audi TT 1.8L Hesitation, Misfire, MIL Lamp on, intermittent VIN: TRVWX28N91 P0300: Random/ Multiple cylinder Misfire detected intermittent. ... me nuts. This car when started cold once and a while for the first minute of operation will hesitate badly and stumble setting the above codes. I have replaced a ripped open PCV breather hose and changed the charge air pressure bypass valve, and air recirc... |
March 15, 2007 | |
| 2001 Volkswagen Passat GLS 1.8L Hesitation, Misfire VIN: WWWPD63B01 P0300: random misfire. car came in with lean and misfire codes. idle quality was very good. repaired large vacuum leak, now car has extreme lack of power/hesitation.installed new maf, no difference.tried relearn, no difference.checked exhaust back pressure, passed. when test driving... |
March 17, 2007 | |
| 2000 GMC Jimmy Diamond Edition 4.3L Surge, Misfire, MIL Lamp on VIN: 1GKDT13W7Y P0300: Multiple Cylinder Misfire Detected. hi techs,the problem is an intermittent misfire.has code po300 for random cyl.misfire.always starts right up & idles fine but if idle raised between about 1000-2000 rpm you can usually feel it misfire,sometimes barely sometimes alot.the same is felt while ... |
March 18, 2007 | |
| 2002 Toyota Tundra 3.4L MIL Lamp on VIN: 5TBJN32172 P0300: Multiple Cylinder Misfire Detected. ... two codes about every three weeks(p0300,p0301).The truck apears to run well and the owner said it never misses a beat.The only thing i have noticed is that on decel from about 2500rpm to idle the engine seems to run rough.Fuel trim # are good and the air f... |
March 18, 2007 | |
| 2000 Mitsubishi Galant ES 3.0L Poor Idle Quality VIN: 4A3AA46L5Y P0300: Random Misfire Detected. ... intermittentley vehical RPM is rise as he comes to a stop. Found Codes P0340, P0335, and P0300. Cleared and has not returned. Vehical seems to have to problem at this time and has not acted up for us in the shop. |
March 19, 2007 | |
| 1993 Cadillac DeVille 4.9L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G6KD54Y03 P0300: Random Misfire. Hey guys; This one is killing me. 90% of the time this has a dead miss #6 cylinder. Pulled the spark plug and was fuel fouled. Installed new plug and still missing. Performed injector balance test (OK); Scoped with low amps probe #6 injector (good - even show... |
March 20, 2007 | |
| 2002 Dodge Ram 1500 Van 5.9L Misfire VIN: 1D7HA18Z62 P0300: Multiple Cylinder Misfire Detected. When the truck came in a full tune-up had been done on it. The throtle body was dirty so we cleaned it and flushed the injectors. It misses more when cold but not for very long, but sometimes a little when hot. It started with only #7 and now both 7 & 8 wi... |
March 20, 2007 | |
| 1993 Cadillac DeVille 4.9L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G6KD54Y03 P0300: Random Misfire. Hey guys; This one is killing me. 90% of the time this has a dead miss #6 cylinder. Pulled the spark plug and was fuel fouled. Installed new plug and still missing. Performed injector balance test (OK); Scoped with low amps probe #6 injector (good - even show... |
March 21, 2007 | |
| 2002 Chevrolet Express 2500 5.7L Hesitation, MIL Lamp on VIN: 1GC6625R82 P0300: Multiple Cylinder Misfire Detected. ... with a customer complaint of intermittant check enging light with hesitation/misfire. Scanned codes and no current codes but p0300 and p1381 present in history codes. Attempting to diagnose but mitchell information limited. Any help would be appriciated. T... |
March 21, 2007 | |
| 2002 Dodge Ram 1500 Van 5.9L Misfire VIN: 1D7HA18Z62 P0300: Multiple Cylinder Misfire Detected. When the truck came in a full tune-up had been done on it. The throtle body was dirty so we cleaned it and flushed the injectors. It misses more when cold but not for very long, but sometimes a little when hot. It started with only #7 and now both 7 & 8 wi... |
March 22, 2007 | |
| 2001 Saturn L200 2.2L stft/ltftrim;subtrac VIN: 1G8JU52F51 P0300: Random Misfire Detected. Hi gang,this L200 came-in running poorly,checked codes=see below,monitored long term ful trim + stftrim,found numbers around mins10% stft@idle,,[...]@ idle...When Cruising numbers got worse,,,-25-stft,,minus-22ltft.. Also was popping thru intake,so i ck'ed exh... |
March 22, 2007 | |
| 1999 Volkswagen Beetle GLS 2.0L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 3VWCC21C4X P0300: random misfires. This Beetle starts and idles fine but stumbles when the throttle is pushed. It revs smooth if you push the throttle slowly. At full throttle no load the engine leans out chokes then starts to surge. Classic MAF problem but the new MAF nor a known good one off ... |
March 22, 2007 | |
| 2001 Saturn L200 2.2L stft/ltftrim;subtrac VIN: 1G8JU52F51 P0300: Random Misfire Detected. Hi gang,this L200 came-in running poorly,checked codes=see below,monitored long term ful trim + stftrim,found numbers around mins10% stft@idle,,[...]@ idle...When Cruising numbers got worse,,,-25-stft,,minus-22ltft.. Also was popping thru intake,so i ck'ed exh... |
March 23, 2007 | |
| 2003 Acura CL Type-S 3.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 19UYA41603 P0300: Multiple Misfire Detected. vehicle has misfire at idle only varies slight to signifigant. fuel trim adjusting for rich condition short and long term.misfire codes come and go fuel trim adjust constant. |
March 26, 2007 | |
| 2003 Chevrolet Trailblazer North Face 4.2L MIL Lamp on VIN: 1GNET16SX3 P0300: Multiple Engine Misfire Detected. this vehicle was towed in with no power. started with the basic checks, fuel pressure ok. checked exhaust for restrictions, no restrictions. scan for codes came up with the codes lised above. checked o2 operation , operates fine. checked for misfire, no fault ... |
March 26, 2007 | |
| 2001 Buick LeSabre Custom 3.8L Misfire VIN: 1G4HE54K61 P0300: Multiple Engine Misfire Detected. I have a constant miss on 6 cylinder idling and if you raise the rpm's it quites missing. I've changed coil pack, plugs, wires, and injector. What could it be? |
March 27, 2007 | |
| 1996 Ford Windstar GL 3.8L Misfire VIN: 2FMDA514XT P0300: multiple mis-fire detected. ... plugs/wires/coil/fuel filter all done in last 20,000 kms. Vehicle has driven fine since until two months ago - recurring P0300 random mis-fire- When we check van it does not miss. According to customer the check engine light only comes on after she's drive... |
March 28, 2007 | |
| 2000 GMC Safari SL 4.3L Hesitation, Misfire VIN: 1GKEL19W7Y P0300: Multiple Cylinder Misfire Detected. the van has had random misfires on all cyclinders under light load. doesn't matter if it is hot or cold. happens while in o/d with light acceleration, or from 10-20mph. if you brake torque it won't miss. if you accelerate hard it won't miss. has had the proble... |
March 28, 2007 | |
| 1999 Chevrolet Venture 3.4L Misfire, Misfire #4 Loaded VIN: 1G2HX53L9P P0300: Multiple Cylinder Misfire Detected. This vehicle is due back to me next Wednesday. Would like to know if someone has any bright ideas on what I could be looking at here. Truly feels like an ignition drop, but I am starting to believe my spidy senses are wrong on that. Changing out an injector on... |
March 29, 2007 | |
| 2001 Lincoln LS 3.9L intermittant misfire VIN: 1LNHM87A21 P0300: random misfire. car came to us with intermittint codes (p0300/p0304). cant feel a misfire, on scan data ltft -10 to -25. on o2, the front ones have good crosscounts in a normal range, the rear o2's, bank one around 60, bank 2 around 800. anyone seen this before? thank in adva... |
March 29, 2007 | |
| 1998 Buick LeSabre Limited 3.8L Misfire VIN: 1G4HR52K9W P0300: Engine Misfire Detected. ... misfire at an Idle on #1 cylider,It is not solid miss,but it does miss bad to the point of setting the p0300.I did check for an Intake leak by pulling T-body off,I did not see any coolant in the intake.Also I did preform an Injector balance and passed,also... |
March 30, 2007 | |
| 2001 Nissan Frontier SE 3.3L Poor Idle Quality, Stall, MIL Lamp on VIN: 1N6ED27T41 P0300: Multiple Misfire Detected. ... vehicle came in running real bad from idle to about 2500 rpms. It had a code P0300 cylinder misfire and a P0325 knock sensor. Checked for vacuum leaks, fuel pressure, cap, rotor, plugs, maf sensor, O2 sensor wireing plugged in to the correct connectors, al... |
March 30, 2007 |
