P0300 Diagnostic Trouble Code Discussion for March 2009
Multiple Misfire Detected
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| Help Request | Posted | |
| 2000 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: IJ4G248S4Y P0300: Multiple Cylinder Misfire Detected. Im having trouble with this jeep. Car came into the shop with a MIL. there was only one code present when it came in P0304(cylinder 4 Mis). i cleared the codes and tried to duplicate the syptom. i noticed that if i rev. the car at 3000 rpm for about 30 seconds... |
March 02, 2009 | |
| 2005 Jaguar S-Type Sport 4.2L Misfire VIN: SAJWA0IU75 ... drives fine. It came in with p0300, p0301, p0303, p0305, p0307, and p1316. customer stated that car was missing. but now seems fine. Just wondering where to start on this one and would gre... |
March 03, 2009 | |
| 1999 Pontiac Grand Am SE 2.4L Misfire VIN: 1G2NE52TXX P0300: Multiple Cylinder Misfire Detected. Trying to be as efficant with customers money as possible. timing chain, broken valve spring worn cam lobe all possible? |
March 03, 2009 | |
| 2005 Chevrolet Trailblazer EXT LS 4.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNDS13S75 P0300: random cylinder misfire. Hi GM techs, I hope someone can help me with this headache. I have this trailblazer with an idling problem. Came in with PO300 and PO014. The PO014 has not come back since i cleared it. THe problem is at idle, this truck misfires on cylinders 2,4, and sometime... |
March 04, 2009 | |
| 2002 Chevrolet Astro LS 4.3L Misfire, MIL Lamp on VIN: 1GNDM19X12 P0300: Multiple Cylinder Misfire Detected. ... poorly. The crank sensor had been hitting the reluctor and was dead. It was replaced and shimmed, per factory bulletin, as the case looked fine. It also had a code P0300 for random misfire. Also had P0101 Mass air folw sensor out of range and a P0463 fuel ... |
March 05, 2009 | |
| 1999 Ford F-150 4.2L Misfire VIN: 1FTZY1726X Skips on all cylinder on right bank.rechecked spark.injector pluse,pulled injectors to check.compression test 180 psi |
March 06, 2009 | |
| 1997 Toyota 4Runner 2.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: JT3HM84R9V P0300: Multiple Cylinder Misfire Detected. Hi and thanks in advance.This one has me stumped. Ive done evey thing i could think of twice and some things three times.Vehicle has spark fuel and compression.Scan data is normal.Fuel pressure normal.New plugs and wires.New injector. Runs smoother at higher r... |
March 06, 2009 | |
| 2001 Jeep Grand Cherokee Laredo 4.0L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1J4GW48S61 P0300: Multiple Cylinder Misfire Detected. Vehicle came in with a no start condition. No fuel pressure and a crank postion code P0320. Replaced the crank sensor and the fuel pump. Vehicle drove good until it go hot (15-20mins). The misfire codes popped up and the vehicle misfired bad. Checked the synce... |
March 10, 2009 | |
| 1999 Pontiac Grand Prix GT 3.8L Misfire VIN: 1G2WP52K8X P0300: Multiple Engine Misfire Detected. missfire at idle code p0300 most evident at idle cylinder 4 missfire showing on scanner in the thousands. checked the above stuff all seems ok .just want secound opinion. thanks for the help in advance. |
March 10, 2009 | |
| 1999 Pontiac Grand Prix GT 3.8L Misfire VIN: 1G2WP52K8X P0300: Multiple Engine Misfire Detected. missfire at idle code p0300 most evident at idle cylinder 4 missfire showing on scanner in the thousands. checked the above stuff all seems ok .just want secound opinion. thanks for the help in advance. |
March 10, 2009 | |
| 2000 Chevrolet S10 2.2L Misfire, MIL Lamp on VIN: 1GCCS195XY P0300: Multiple Engine Misfire Detected. Hello, I have this little truck here that has been to a couple of different shops locally and now to me, when first started it runs o.k. for a few seconds then starts missing on #4 cylinder. Checked compression, has 125 cranking compression across the board, f... |
March 11, 2009 | |
| 2003 Chevrolet Tahoe LT 5.3L Cuts out, Misfire, MIL Lamp on VIN: 1GNEK13Z43 P0300: Multiple Cylinder Misfire Detected. This Tahoe came in and the customer ststed that the check engine light comes on while driving, engine misfires and check engine light flashes. No big deal, should be an easy misfire correction. I took the vehicle out and sure enough it happened. What I noticed... |
March 11, 2009 | |
| 2000 Pontiac Grand Am SE 3.4L Misfire VIN: 1G2NG12E8Y P0300: Multiple Cylinder Misfire Detected. ... Grand Am 3.4 misfires and bucks at 72+ mph. While driving on interstate this vehicle will run great until you reach 72+mph and let off slightly. At that point it begins to misfire and buck, scan data shows misfires across the board. After misfiring for a b... |
March 11, 2009 | |
| 1999 Toyota 4Runner SR5 3.4L Hesitation, Misfire, MIL Lamp on VIN: JT3HN86R9X P0300: Multiple Cylinder Misfire Detected. Hello there I have this 4 Runner with what seems to be a simple misfire issue. I have check plugs wires and coils and it still will misfire especially on #3. I have switched plugs wires and coils around and it still has a problem. It also has a no power when a... |
March 11, 2009 | |
| 2001 Toyota Corolla CE 1.8L Hesitation, Misfire, MIL Lamp on VIN: 1NXBR12E91 P0300: Multiple Cylinder Misfire Detected. ... very lean at idle.Car came in the shop with a p0171 .and p0300. My mastertech scaner shows at idle MAF 2.5 GR/s , both o2 sensors 0.00v ,stft 19%,ltft 29%. I have run fuel press ,compression,check for vac leaks and check injector resistance everything is i... |
March 11, 2009 | |
| 2000 Volkswagen Jetta GLS 2.8L Misfire, MIL Lamp on, NOISE VIN: 3VWSE29M7Y P0300: random miss. hey guys! car came in complaning of no pwr, missing, and knocking noise in eng. i thought at first it had a broken rod!! lol. it is hammering! but it is more top end, comming from intake runner area. but real loud. i movr the runner down and it changes tone sn... |
March 11, 2009 | |
| 1996 Chevrolet Caprice Classic 4.3L Misfire VIN: 1G1BL52WXT P0300: Multiple Engine Misfire Detected. Need some help. customer came in with misfire. checked the scanner and had every cylinder missing. The water pump was leaking horribly bad. the plugs and wires were original. along with the cap and rotor. I replaced the water pump and did a full tune up plug,w... |
March 12, 2009 | |
| 2005 Kia Sorento EX 3.5L Poor Idle Quality, MIL Lamp on VIN: KNDJD73375 P0300: Multiple Misfire Detected. ... light. Codes P0300, P0302, P0304, & P0306. The enine seems to idle a little rough but goes away immidiattly off of idle. Runs great down the road just idles rough. Did a smoke test and found a vac. hose on the right rear of plenum broken. Repaired and ... |
March 12, 2009 | |
| 2006 Saturn Ion-3 2.2L Misfire, MIL Lamp on VIN: 1G8AW15F46 P0300: Random Misfire Detected. This Ecotech engine sets a PO300 random misfire code.I can watch misfire data and see misfire counts on #4 cylinder.Customer's only complaint was MIL light on.They did not notice misfire.You can feel slight miss at idle.There are no misfires at any RPM's above... |
March 12, 2009 | |
| 1997 Toyota Camry CE 2.2L MIL Lamp on VIN: 4TB1G22K5V P0300: Multiple Cylinder Misfire Detected. This toyota was worked on at a friends shop and was sent to me for help. Car needs to be inspected. The list above tells the tale of parts that have been installed or tried. When I got car I test drove after clearing trouble codes for 30 miles. The car never m... |
March 12, 2009 | |
| 2000 Pontiac Grand Am SE 2.4L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G2NF52T1Y P0300: Multiple Cylinder Misfire Detected. Vehicle came in with MIL on P1171, P0300. Would misfire at idle no response on acceleration. I replaced fuel filter due to it being plugged up. Vehicle still has misfire. Fuel trim levels at idle do not go more than 10%-+. Idle Vacuum is about 16Hg. When you d... |
March 13, 2009 | |
| 2001 Toyota Corolla CE 1.8L Hesitation, Misfire, MIL Lamp on VIN: 1NXBR12E91 P0300: Multiple Cylinder Misfire Detected. ... very lean at idle.Car came in the shop with a p0171 .and p0300. My mastertech scaner shows at idle MAF 2.5 GR/s , both o2 sensors 0.00v ,stft 19%,ltft 29%. I have run fuel press ,compression,check for vac leaks and check injector resistance everything is i... |
March 13, 2009 | |
| 1999 GMC Sierra 1500 SLT 5.3L Misfire VIN: 2GTEC19T7X P0300: Multiple Cylinder Misfire Detected. thanks in advance.i was just wondering if that code could have anything to do with this random miss.i have checked fuel pressure okay,also cleaned out maf.misfire was on cylinder's 134578 at first after i cleaned maf no misfies on any cylinder,but to me it;s n... |
March 16, 2009 | |
| 2002 Nissan Sentra SE-R 2.5L no power VIN: 3N1AB51D52 P0300: Multiple Misfire Detected. ... my shop with a no power problem. It idles fine but as soon as you hit the gas pedal the first time apon starting it revs up to 3500 rpm than drops back down to 700 rpm no matter what the gas pedal is doing. I pulled the 02 sensor out thinking it was clogge... |
March 16, 2009 | |
| 2002 Honda Accord Value Package 2.3L Cuts out, Misfire VIN: 1HGCF86652 P0300: Multiple Misfire Detected. Honda specialists, please help. This car will level out at about 4500 RPM's under full throttle and will not speed up at all or shift to second gear when it reaches this point unless you start to let off of the gas pedal some and then it will go ahead and shif... |
March 17, 2009 | |
| 2002 Jaguar S-Type 4.0L Misfire, MIL Lamp on VIN: SAJDA01P82 ... codes P0300 & P0303. i swapped # 1 & # 3 coils. reset mil light and took it for a test drive. it cant get out of its own way and then set codes P0300 P0302 P0303 P0304 P0306. i have checked iatn for same problems and looked over the car with what o... |
March 17, 2009 | |
| 2006 Volkswagen Passat 2.0T 2.0L Poor Idle Quality, Misfire VIN: WVWAK73C96 P0300: mis on all cyl. intemittent. i have been looking at this car for about a week.i tryed mass air and wastegate sol valve.ive checked for air leaks-nothing.i removed recirculating valve for turbo tested ok.any help at this point would be great. |
March 17, 2009 | |
| 2002 Mercury Sable GS 3.0L Poor Idle Quality, Surge, Misfire VIN: 1MEFM50U91 P0300: multiple cylinder missfire detected. ... with cel on with a p0300 stored. test drove vehicle to verify and it did miss under load. performed tune up and that cleared up problem. now when started cold, i have a missfire/stumble that goes away after approx 1 min. stft varies from 0-10, ltft stays a... |
March 18, 2009 | |
| 1997 Oldsmobile Aurora 4.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G3GR62C4V P0300: Multiple Cylinder Misfire Detected. This car is one of those that doesn't want to leave. Plugs and wires were replaced for arcing out, that repaired the miss under load, but now I had lean codes. That turned out to be the plenum gaskets, but that's where the problem started. The first set of gas... |
March 18, 2009 | |
| 1997 Toyota Camry CE 2.2L MIL Lamp on VIN: 4TB1G22K5V P0300: Multiple Cylinder Misfire Detected. This toyota was worked on at a friends shop and was sent to me for help. Car needs to be inspected. The list above tells the tale of parts that have been installed or tried. When I got car I test drove after clearing trouble codes for 30 miles. The car never m... |
March 18, 2009 | |
| 1997 Chevrolet C1500 4.3L Excessive Emissions VIN: 1GCEC14W3V P0300: Multiple Cylinder Misfire Detected. ... including the b1s3 ) the tp sensor voltage readings are within range ( P0121 ) ( P0300 ) was in freeze frame only, there are no misfire counts showing on any cylinder. The stft's 1 & 2 are at mid 120's the ltft's are at mid 130's always. When the P030... |
March 19, 2009 | |
| 2004 Dodge Neon SXT 2.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1B3ES56C34 P0300: Multiple Cylinder Misfire Detected. ... that hopefully someone out there has seen before. It came in as a check engine light with codes p0300, and po303. We replaced plugs with champions and customer left. A few days later she was back with the same codes, so we ... |
March 20, 2009 | |
| 2002 Honda Accord Value Package 2.3L Cuts out, Misfire VIN: 1HGCF86652 P0300: Multiple Misfire Detected. Honda specialists, please help. This car will level out at about 4500 RPM's under full throttle and will not speed up at all or shift to second gear when it reaches this point unless you start to let off of the gas pedal some and then it will go ahead and shif... |
March 20, 2009 | |
| 2002 Toyota Camry SE 2.4L Excessive Emissions, Misfire, MIL Lamp on VIN: 1GCCS1442T P0300: Multiple Cylinder Misfire Detected. not to much exp on toyota 1 month ago customer brings in car has po442 decined looking into code,car run ok,now problem with idel and shows slight misfire,lean bk 1,dont know toyota to well,and would like to know what direction to take from you guys,fuel press... |
March 20, 2009 | |
| 2005 Ford Ranger Edge 3.0L Misfire VIN: 1FTYR14U65 P0300: Random Misfire. Cylinder #1 misfire. This misfire is present all the time. compression is 160 as are all others, running compression is 90 as are all others. Good spark, tests at 50kv available. we swapped spark plugs with #3 cylinder with no difference. we swapped injector w... |
March 23, 2009 | |
| 2001 Jeep Cherokee Sport 4.0L MIL Lamp on VIN: 1J4FT47S51 P0300: Multiple Cylinder Misfire Detected. Hello group, I have one that has been wished on me. This truck was involved in an accident. The owner hit a deer on the driver side front corner. The car was taken to a body shop and repaired. I have found several things that were left undone. Those I have rep... |
March 23, 2009 | |
| 1996 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: 1J4GZ58S3T P0300: Multiple Cylinder Misfire Detected. ... customer. Came in for a smog pre-test. He knew his Check Engine light was on. I performed the Calif. TSI test. The car passes emissions, But failed for P0300,301,302,303,304,305, AND 306. The local dealer had replaced the pcm 3 ... |
March 24, 2009 | |
| 2002 Toyota Camry SE 2.4L Excessive Emissions, Misfire, MIL Lamp on VIN: 1GCCS1442T P0300: Multiple Cylinder Misfire Detected. not to much exp on toyota 1 month ago customer brings in car has po442 decined looking into code,car run ok,now problem with idel and shows slight misfire,lean bk 1,dont know toyota to well,and would like to know what direction to take from you guys,fuel press... |
March 24, 2009 | |
| 2001 Buick Century Limited 3.1L Hesitation, Misfire VIN: 2G4WY55J01 P0300: Engine Misfire Detected. Hi all. This car has problems on acceleration. It has a miss/jerking and low power when accelerating. It happens most of the time, but sometimes not during the 1st minutes of a cold start. Otherwise during all accel, including on the highway. Also at times, wh... |
March 25, 2009 | |
| 2004 Ford Focus ZX3 2.0L Poor Idle Quality, Cuts out, Stall, Misfire VIN: 3FAHP31334 P0300: missfire. ... scan code p0300 .got to start but runs like to is running out of fuel.getting fuel psi 45-60psi vehical is leaning out tryed maf sensor no change.has a electric fuel regulator my scan tool not read fuel psi snap on. other scan tool no comm.is there a nothe... |
March 25, 2009 | |
| 2005 Saturn Ion-1 2.2L lack of power VIN: 1G8AF54F15 P0300: Random Misfire Detected. ... power. Customer stated that the car would idle good but bog down when the accelerator was pressed, and didn't have enough power to pull itself. Scanned and found the codes listed. I took it out for a test drive and the car ran perfect. Cleared codes and re... |
March 25, 2009 | |
| 1999 BMW 323i 2.5L Poor Idle Quality, Surge, Misfire, MIL Lamp on VIN: WBAAM3339X P0300: random missfire. Running lean p1189 (228) need help with this bmw, came in with bunch of codes, cleared codes and drove till mil. foud 4 lean codes and missfire. missfireing and ligh backfire heard in intake like a lean backfire only when first started. then short term goes +2... |
March 27, 2009 | |
| 2001 Chevrolet Silverado 1500 4.3L Poor Idle Quality, Hesitation, Surge, Misfire VIN: 1GCEC14W91 P0300: Multiple Cylinder Misfire Detected. Hey Guys, My Alldata computer is down again and I have this 4.3 chev pickup with a bad random missfire in 1 and 2 cylinders. I have since put AC Delco plugs wires cap and rotor but have also discovered that it has some stupid readings on the Sensors. Such as C... |
March 27, 2009 | |
| 1997 Oldsmobile Aurora 4.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G3GR62C4V P0300: Multiple Cylinder Misfire Detected. This car is one of those that doesn't want to leave. Plugs and wires were replaced for arcing out, that repaired the miss under load, but now I had lean codes. That turned out to be the plenum gaskets, but that's where the problem started. The first set of gas... |
March 27, 2009 | |
| 1999 Volvo S80 2.9 2.9L Misfire, MIL Lamp on VIN: YV1TS97DX1 P0300: random misfire. ... customer complained mil on and idles rough at times, found p0011 camshaft position a performance & p0300 random misfire. have tested reset valve shows good. our scanner will not show cam angle, oil level is good. have n... |
March 27, 2009 | |
| 2003 Audi A4 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WAULC68E13 P0300: Random misfires. ... light and unstable idle. we checked the codes and had a P0171 lean bank 1, p0328 knock sensor circuit high input, p0300, p0301, p0302, p0303,p0304 all misfire codes. The MAF was defective ... |
March 28, 2009 | |
| 2005 Nissan Altima SE-R 3.5L Poor Idle Quality, MIL Lamp on VIN: 1N4BL11E75 P0300: Multiple Misfire Detected. Engine has a rough idle. Data for ITV Time Bank 1 is 80 degrees and Bank 2 is +/- 1 degree. Cam sensor signal seems OK for Bank 1. Tested valve solenoid and passed resistance and functional test. I suspect Timing Chain out but due to the low milege, in not con... |
March 29, 2009 | |
| 2000 Jeep Cherokee Sport 4.0L Misfire VIN: 1J4FF48S2Y P0300: Multiple Cylinder Misfire Detected. Hello, this Cherokee 4.0L has intermittant misfire codes. All 6 spark pluge were replaced July 11, 2008. On Nov. 19, 2008 we found the #4 spark plug had the porcelain cracked, causing a misfire. Replaced plug, veh returned Feb. 11, 2009 W/ #3 plug porecelain c... |
March 30, 2009 | |
| 2005 Mercedes-Benz SLK350 3.5L Misfire VIN: WDBWK56F75 P0300: random misfire. Thanks as always fellow technicians Mil is on, all misfire codes and mixture codes for rt. bank of cylinders, If this was a M112 or M113 I'd be sending him to the dealer for warranty catalyst replacement on the rt. bank. I have only worked on a few of the M272... |
March 30, 2009 | |
| 2005 Mercedes-Benz SLK350 3.5L Misfire VIN: WDBWK56F75 P0300: random misfire. Thanks as always fellow technicians Mil is on, all misfire codes and mixture codes for rt. bank of cylinders, If this was a M112 or M113 I'd be sending him to the dealer for warranty catalyst replacement on the rt. bank. I have only worked on a few of the M272... |
March 31, 2009 |
