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P0300 Diagnostic Trouble Code Discussion for February 2008

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2007 Ford Focus SES 2.0L Excessive Emissions, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1FAHP36N77
P0300: Random mis-fire 301 302 303 304 also. Today, the car started-up right away and while it seems to run ok, there is some noted problems. The O2 is lazy. It looks like the car has only traveled 45 miles on a half tank of gas and there is soot all over the car. There is a slight mis-fire under accel....
February 01, 2008
1999 Mercedes-Benz ML430 4.3L Misfire VIN: 4JGAB72E2X
P0300: Random miss-fire. Tech getting frustrated with vehicle. One thing that MB does when it detects a miss is that it shuts down the injector for the affected cylinder which does not allow much of a window to look at stuff before miss turns to a solid hard miss. Jim talked with Iden...
February 01, 2008
1999 Chevrolet Silverado 1500 4.3L Hesitation, Surge, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCEC14W8X
P0300: Multiple Cylinder Misfire Detected. Just wondering if a P0122 Pedal position sensor A low voltage is strictly a code for drive by wire system or if it can be related to the TPS also. I am under the impression that this code is for drive by wire systems. I checked TPS with Fluke meter and it chec...
February 03, 2008
1998 Chevrolet K1500 Cheyenne 5.7L No Start, Stall, Misfire, MIL Lamp on VIN: 1GCEK19R5W
P0300: Multiple Cylinder Misfire Detected. ... little lost. its a 1998 k1500 that only acts up when it feels like it. When it runs, it runs like a new truck but right now its acting like its jumped time. When you turn the truck over it pops and backfires just like the timing is off but i know its not. ...
February 04, 2008
2007 Ford Focus SES 2.0L Excessive Emissions, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1FAHP36N77
P0300: Random mis-fire 301 302 303 304 also. Today, the car started-up right away and while it seems to run ok, there is some noted problems. The O2 is lazy. It looks like the car has only traveled 45 miles on a half tank of gas and there is soot all over the car. There is a slight mis-fire under accel....
February 04, 2008
1998 Chevrolet K1500 Cheyenne 5.7L No Start, Stall, Misfire, MIL Lamp on VIN: 1GCEK19R5W
P0300: Multiple Cylinder Misfire Detected. ... little lost. its a 1998 k1500 that only acts up when it feels like it. When it runs, it runs like a new truck but right now its acting like its jumped time. When you turn the truck over it pops and backfires just like the timing is off but i know its not. ...
February 06, 2008
2000 GMC Safari SL 4.3L Misfire, MIL Lamp on VIN: 1GTDM19W0Y
P0300: Multiple Cylinder Misfire Detected. We are scratching our heads on this one. This van belongs to a really good customer of ours and were trying not to let him down but this van is a pain in the @%#$. It has a miss at idle but seems to go away when you rev it up to abuot 2500 rpms. Its setting a ...
February 06, 2008
2005 GMC Canyon Z85 SLE 3.5L Misfire VIN: 1GTDS13625
P0300: Engine Misfire Detected. the misfire counter detects a miss on cylinder 2. 2-4 misfires per cycle. But I do not feel the miss. Any help is greatly appreciated
February 06, 2008
2001 Saturn SL1 1.9L MIL Lamp on VIN: 1G8ZH52891
P0300: Random Misfire Detected. hello saturn techs. hoping someone can give me and idea where to start or tell me if these things have ecm problems. i general only work on imports this is a little new to me. all i am getting is the codes that are listed. car runs fine no drivabilty problems....
February 06, 2008
2004 Saturn Vue Red Line 3.5L Misfire VIN: 5GZCZ63454
P0300: Cylinder 2 Misfire Detected. We've got a 2004 Saturn Vue that has an intermitent skip on multiple cylinders but mostly occurs on cyl #2. At times it will run great and other times it will have a major skip. We've swapped coils with a good cyl. but the skip stayed on cylinder #2. Also, som...
February 06, 2008
1996 Chevrolet Lumina LS 3.4L Poor Idle Quality, Surge, Cuts out, Stall VIN: 2G1WN52X2T
P0300: Multiple Engine Misfire Detected. the car came in with a complaint of dieing out and hunting idle we checked for vacuum leaks and found the pcv hose under the intake leaking so we replaced it no change so we than checked and replaced the timing belt do to it missing about half the belt it was ...
February 07, 2008
2005 Hyundai Sonata GLS 2.7L Stall, Misfire, MIL Lamp on VIN: KMHWF35HX5
P0300: Multiple Misfire Detected. this is a very intermitant problem. misfires, slows down and stalls. cannot duplicate driver concern. took 30 days to rehappen .
February 07, 2008
1999 Mercedes-Benz SLK230 Kompressor 2.3L Cuts out, Misfire VIN: WDB1704472
P0300: random / multiple cyl misfire detected. thanks for looking at this request. i have a car that seems to have an excessive amount of oil in the intake hose area. it first came in for no start and we traced it to the air mass meter. we replaced that and roadtested fine but noticed a lot off oil in the ...
February 07, 2008
2003 Mitsubishi Eclipse GT 3.0L No Start, Misfire VIN: 4A3AC84H33
P0300: Random Misfire Detected. We did a waterpump/ timing belt and full tune-up, 203 miles before this car got towed back to us. It cranks strong but did not run, we had injector and spark, we pulled the front spark plugs and they were gas soaked. After cleaning the plugs it started. It now...
February 07, 2008
1996 Chevrolet Lumina LS 3.4L Poor Idle Quality, Surge, Cuts out, Stall VIN: 2G1WN52X2T
P0300: Multiple Engine Misfire Detected. the car came in with a complaint of dieing out and hunting idle we checked for vacuum leaks and found the pcv hose under the intake leaking so we replaced it no change so we than checked and replaced the timing belt do to it missing about half the belt it was ...
February 08, 2008
2006 Chevrolet Colorado LT 3.5L Poor Idle Quality, Misfire VIN: 1FE3HI82I6
P0300: Engine Misfire Detected. This is my parents truck and they live out of state so all the info is not correct. The problem is a rough idle that feels like it is misfiring. Increase RPM's and it goes away. After reading some past fixes we were concerned that the head was bad. the first t...
February 08, 2008
1999 Oldsmobile Bravada 4.3L Misfire, MIL Lamp on VIN: 1GHDT13W4X
P0300: Multiple Cylinder Misfire Detected. OK,I think i should have left this one alone but i did not.it had been looked at by someone else and the customer told it had a burnt valve,i was asked if i wanted to fix it-without seeing it i suggested just get a head and i'll install it and then it'll go qu...
February 08, 2008
2002 Oldsmobile Silhouette Premiere 3.4L Misfire VIN: 1GHDX03E72
P0300: Multiple Cylinder Misfire Detected. ... on wednesday. Then all at once it started to run bad, and the check engine light came on. I scaned it, and it came up with a #3 misfire. I put an inline park tester and found spark from the coil. Replaced that plug and wire. It still misfired. Replaced the...
February 08, 2008
2004 Suzuki Forenza S 2.0L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: KL5JD52Z34
P0300: Multiple Cylinder Misfire Detected. ... rough all the time check codes found P0300 and P0134 O2 sensor circuit no activity bank 1 sensor 1, removed plugs and found oil in the spark plug wells, and spark plug boots swollen from oil, we sold plugs and wires and valve cover gasket, (had to wait sev...
February 08, 2008
2005 Chevrolet Colorado Sport 2.8L Misfire, MIL Lamp on
P0300: Engine Misfire Detected. Truck came in with po300,checked misfire counters #3 was misfiring the most.So I changed the #3 coil and did a tune-up.It seems to miss when you first start it up and when you rev it up.Customer said gas milage improved after tune-up.There is a TSB for bad val...
February 09, 2008
1999 Oldsmobile Bravada 4.3L Misfire, MIL Lamp on VIN: 1GHDT13W4X
P0300: Multiple Cylinder Misfire Detected. OK,I think i should have left this one alone but i did not.it had been looked at by someone else and the customer told it had a burnt valve,i was asked if i wanted to fix it-without seeing it i suggested just get a head and i'll install it and then it'll go qu...
February 09, 2008
2002 Oldsmobile Silhouette Premiere 3.4L Misfire VIN: 1GHDX03E72
P0300: Multiple Cylinder Misfire Detected. ... on wednesday. Then all at once it started to run bad, and the check engine light came on. I scaned it, and it came up with a #3 misfire. I put an inline park tester and found spark from the coil. Replaced that plug and wire. It still misfired. Replaced the...
February 09, 2008
2001 GMC Jimmy SLE 4.3L MIL Lamp on, Hard Starting VIN: 1GKDT13W71
P0300: Multiple Cylinder Misfire Detected. HELP This is my Father-in Law's car -- So ofcourse not making a big profit here-- HA HA --- Has extended crank most of the time--- codes came on at about 110,000 miles-- changed O2 sensors and did complete tune-up--- ran great-- still does-- but after a week o...
February 12, 2008
1999 Nissan Pathfinder LE 3.3L MIL Lamp on VIN: JN8AR05S0X
P0300: Multiple Misfire Detected. ... the MIL light, P0300 random misfire. There are no vacuum leaks and the plugs and wires rotor and cap are in good condition. I'm suspecting a problem with the PCM/calibration, although it is rare, for a couple of reasons. First the P0300 code. The engine a...
February 13, 2008
2001 Nissan Sentra GXE 1.8L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire VIN: 3N1CB51D41
P0300: Multiple Misfire Detected. absolute pressure and atmospheric pressure both read 3.94v and never change even at wide open throttle cant seem to find the info i want
February 13, 2008
1996 Lexus LS400 4.0L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: JT8BH22F8T
P0300: Multiple Cylinder Misfire Detected. vehicle also has had injectors rebuilt,radiator replaced,speed cam and crank sensors ok,cam timing on the money reluctor good, installed properly, no scratches and sometimes engine runs perfect...??? fuel pressures ok so please help, keeps setting all 8 miss...
February 14, 2008
1998 Jeep Wrangler Sahara 4.0L Misfire VIN: 1J4FY49S3W
P0300: Multiple Cylinder Misfire Detected. thanks to all who read this. we have this vehicle which is new to the customer and it only misses at cruise and warm. the miss cannot be felt when driving but shows on the misfire moniters on the modis and of course sets codes. we have checked ignition parts, ...
February 15, 2008
2000 Oldsmobile Alero GX 2.4L Hesitation VIN: 1G3NK52T9Y
P0300: Multiple Cylinder Misfire Detected. ... installed. avging 1 1/2 months between code reappearing(p0420). 2 time there were missfire codes with the cat code. all scan reading seem normal. we have reprogramed the ecm also. any help would be greatly appreciated
February 15, 2008
2004 Chevrolet Cavalier LS 2.2L Poor Idle Quality VIN: 1G1JF52F24
P0300: Multiple Engine Misfire Detected. ... & P0172 present. Checked history misfire counts and all seemed to be close on all cylinders. Vacuum @ idle 10 hg. Smoked intake and little seepage out throttle valve - but no other vacuum leaks. Checked compression 160 all cylinders. Performed upper cy...
February 18, 2008
2000 Honda CR-V EX 2.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: JHLRD1869Y
P0300: Multiple Misfire Detected. I have a honda with a misfire that I am unable to pinpoint to any 1 cyl. If I remove a plug wire from any cylinder, the engine RPM's drop drastically. I have replaced timing belt due to mileage and slack between gears, (also w/pump was leaking). I have replace...
February 18, 2008
2001 Pontiac Grand Am SE 2.4L Misfire VIN: 1G2NF52T71
P0300: Multiple Cylinder Misfire Detected. Hello all, I'm reposting this vehicle because it is still having the same issue. This is the second time back since my first posting. Last time I replaced the plugs with AC Delco ones and also replaced both ignition coils. It has been less than 2k miles and it...
February 18, 2008
1997 Jaguar XK8 4.0L Misfire VIN: SAJGX2746V
P0300: Random misfire. The car came in again a day ago and the codes listed in this post were set. There was not previously a code for a fuel injection fault, and the code for the crankshaft pos. sensor was not stored as an engine fault, but as a climate control system fault, but I ...
February 19, 2008
1999 Lexus RX300 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Misfire, MIL Lamp on VIN: JT6GF10U5X
P0300: random misfire. Car came to us with the complaint Mil on and runs rough. Upon scanning the system we found the codes recorded. Due to the fact the timing belt had been replaced recently we decided to check cam timing first. We did not find anything out of time (all marks dead...
February 19, 2008
2006 Mitsubishi Lancer ES 2.0L Hesitation, Surge, MIL Lamp on VIN: JA3AJ16E66
P0300: Random Misfire Detected. ... techs. I have this lancer with dtc P0300. I replaced spark plugs coils spark plugs wires. The codes continues. I make some visual checks and i found that front crankshaft oil seal have a leak and cranshaft position sensor is wet. We replace cranshaft posit...
February 19, 2008
1997 Chevrolet K1500 Suburban 5.7L Misfire VIN: 3GNFK16R3V
P0300: Multiple Cylinder Misfire Detected. cxhecked entire system and unable find the problem. the vehicle will have an intermittant misfire at adle when stopped under a load while the brake is applied. only at idle. any help with this one would be appreciated. was unable to reproduce customer complain...
February 20, 2008
2001 Chevrolet Blazer LS 4.3L Misfire, MIL Lamp on VIN: 1GNDT13W51
P0300: Multiple Cylinder Misfire Detected. ... maintained.the shop could not figure out the reason for the miss so they sent it to me.I scaned the vehicle got P0300 and P01345, data showed cyl 5 and 6 misfiring and cam retard at 1000rpm at -21 deg.I noticed the distr. w...
February 20, 2008
2002 Chevrolet Venture 3.4L No Start, Stall, Misfire VIN: 1GNDU03E62
P0300: Multiple Cylinder Misfire Detected. Hey guys thanx for the help in advance, This is my son's car and when he was driving it it was missing. Then it lost power and died. I checked misfire hist. and #1 was the only one missing. I checked data when cranking,I have a crank signal but no cam sig. Th...
February 20, 2008
2006 Mitsubishi Lancer ES 2.0L Hesitation, Surge, MIL Lamp on VIN: JA3AJ16E66
P0300: Random Misfire Detected. ... techs. I have this lancer with dtc P0300. I replaced spark plugs coils spark plugs wires. The codes continues. I make some visual checks and i found that front crankshaft oil seal have a leak and cranshaft position sensor is wet. We replace cranshaft posit...
February 20, 2008
2000 Oldsmobile Intrigue GX 3.5L Hesitation, Misfire, MIL Lamp on VIN: 1G3WH52H8Y
P0300: Multiple Cylinder Misfire Detected. Hello all and thanks in advance for reading this post. This 00 Intrigue goes dead lean (both O2's read lean when it acts up, approx. 40mv) under load (intermittently) and loses power/hesitates, it will eventually come out of it, but for the most part it reads ...
February 20, 2008
1998 BMW 318i 1.9L Misfire VIN: WBACC0327W
P0300: multipule cylinder misfire. i have this bmw which has a hard start problem when cold.the first start of the day the enine starts but it sounds as if though it was flooded with gas.i let it sit with a fuel pressure gauge installed and monitored my fuel pressure drop thinking possibly the ...
February 21, 2008
1996 Pontiac Firebird Formula 5.7L Cuts out, Stall, Misfire, MIL Lamp on VIN: 2G2FV32P0T
P0300: Multiple Engine Misfire Detected. This T.A. runs like a scalded dog until you drive it for about 20-30 min. It will then slowly start to develop a misfire. At idle in gear it feels like just one cylinder. Upon accelleration, the misfires become more severe and exhaust backfires start. If you f...
February 21, 2008
2001 Chevrolet Blazer LS 4.3L Misfire, MIL Lamp on VIN: 1GNDT13W51
P0300: Multiple Cylinder Misfire Detected. ... maintained.the shop could not figure out the reason for the miss so they sent it to me.I scaned the vehicle got P0300 and P01345, data showed cyl 5 and 6 misfiring and cam retard at 1000rpm at -21 deg.I noticed the distr. w...
February 25, 2008
2003 Chrysler PT Cruiser GT 2.4L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 3C8FY7G83T
P0300: Multiple Cylinder Misfire Detected. Inspect for running rough and stalling. Diagnose cylinders #1 and#4 not firing. Ground control to coil assembly not functioning. Open circuit "k19" . Ground control pin out at PCM is functioning correctly. Had trouble finding the open in the coil groun...
February 25, 2008
2004 GMC Savana 3500 6.0L Misfire, MIL Lamp on VIN: 1GTHG39V34
P0300: Multiple Cylinder Misfire Detected. ... this truck. P0300 random misfire with MIL flashing. All cylinders have a recorded misfire with #1 with the most amount. Inspected spark at #1 it will sometimes have inconsistant spark. Injector pulse is okay and injector signature pattern is good. I have s...
February 25, 2008
2001 Hyundai Santa Fe GL 2.4L No Start, Stall, Misfire, MIL Lamp on VIN: KM8SB82B21
P0300: Multiple Misfire Detected. This vehicle was driven in for running poorly and noisy engine. The above codes were stored in the computer. Upon inspection we found the timing belt missing teeth. I replaced it and the cam sensor. We sent the vehicle home the only complaint he had to open th...
February 25, 2008
1999 Chevrolet K1500 Suburban 5.7L Poor Idle Quality, Misfire VIN: 3GNFK16R2X
P0300: Multiple Cylinder Misfire Detected. I am pulling my hair out. Customer said another shop installed an dist. to fix a no start conditon, since then, the vechicle has a rough run and misfires on 3 and 5. I installed a fuel pump to cure the lean missfire on 3 and 5, then the miss moved to 6 and 7,...
February 26, 2008
2002 Chevrolet Tahoe LS 5.3L Poor Idle Quality, Misfire VIN: 1GNEK13Z12
P0300: Multiple Cylinder Misfire Detected. ... at start-up for about 30 seconds to a couple minutes, then clears up and runs fine. DTC P0300 sets at this time. This condition happens about once every two to four weeks. Other than start-up vehicls runs fine. When vehicle is brought to the shop DTC's are...
February 26, 2008
1998 Ford Windstar GL 3.8L Hesitation, Misfire, MIL Lamp on VIN: 2FMZA5143W
P0300: random cylinder misfire. Van was brought in with engine light on and engine had missfire #6 cylinder. We tested plug wires and comfirmed dead wire, so tune up. after tune up van had code 300 multipal cylinder misfire, and cam sensor 340 code, replaced cam sensor and checked all wiring...
February 27, 2008
1996 Dodge Grand Caravan ES 3.8L MIL Lamp on VIN: 1B4GP54L6T
P0300: Multiple Cylinder Misfire Detected. vehicle has a random misfire on all cylinder during accerlration at about 2000 RPM. Vehicle run smooth at idle. Misfre counts at cylinder 4 has the highest amount of misfire count during observation. No visiable sign of crack at flywheel. Compression is at abo...
February 28, 2008
2004 Ford F-150 FX4 5.4L Misfire VIN: 1FTPW14564
P0300: Random Misfire. ... ford truck F150 5.4L. Misses under small load at cruise speeds. P0300 code (random misfire). Did fuel pressure tests, appears ok. Scoped the enjectors, scoped primary ignition. Fuel trims +20 majority of the time on both banks. Looks like its starving for ...
February 28, 2008
2004 Ford F-150 FX4 5.4L Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, allright side misfir VIN: 1FTPX14534
P0300: . all right side of eng. is dead,has dead cyl.check eng.codes camsensor & eng.misfire check sensor ok.replace spark plugs check ign.coils ok.check injectors ok. removed valve cover on right side check spring on cam sproket check timing chain & guides are...
February 28, 2008