Join Now
International Automotive Technicians Network

P0300 Diagnostic Trouble Code Discussion for November 2007

Multiple Misfire Detected


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2000 Toyota Sienna LE 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 4T3ZF13C9Y
P0300: Multiple Cylinder Misfire Detected. ... rough. P0172 bank 1 rich, p0300, p0301, p0305. Tested the ignition system and all is well. Plugs were not wet or fouled. It even had the correct Denso plugs. Next I smoke checked for vacuum leaks, none found. Tested the MAF sensor, Normal waveform. Tested ...
November 01, 2007
2000 Volkswagen Beetle GL 2.0L Cuts out, Stall VIN: 3VWCC21COY
P0300: random mis. This car won't pull over 50gps and lays down at 4k rpm. Customers issue is the car stalls after a twenty min. road trip and will resart after about 2/3 min. We have goten the car to do this once. It felt as if it ran out of fuel. ie, sputtered to a stall. Whe...
November 01, 2007
2000 Chevrolet Impala 3.4L Cuts out VIN: 2G1WF52E1Y
P0300: Multiple Cylinder Misfire Detected. Hi all. Hair puller! Acts like fuel cut/rev limiter when cold. Comes in about 2000 rpm and pops in the exhaust and just runs like crap until 30 seconds or so go by and it then will get (whatever it is) out of it's system and run as strong as ever. When we star...
November 04, 2007
1997 Chevrolet Cavalier 2.2L Misfire VIN: 1G1JF5241V
P0300: Multiple Engine Misfire Detected. rough Idle slight hesitation and misses all the time seems to be worse when cold. I have checked for vacuum leaks, checked fuel injectors compression iac motor all test o.k
November 05, 2007
2004 Dodge Ram 1500 Truck ST 4.7L Misfire VIN: 1D7HU18N24
P0300: Multiple Misfire Detected. 2 weeks after repairs vehicle returned, owner said transmission not shifting & CEL. Scanned & found cyl 5 misfire,& random misfire. Tested coils & injectors, resistance good, waveforms good & wiring good to PCM. Road tested vehicle & fo...
November 05, 2007
1997 Oldsmobile Aurora 4.0L Poor Idle Quality, Misfire VIN: 1G3GR62C6V
P0300: Multiple Cylinder Misfire Detected. We have an Oldsmobilr Aurora that has misfires on cylinders #2,4,6,8. Most of the misfires are on # 6 & 8. Only at idle. Perfored an injector balance test and all are even. Injectors all have a good signal. Smoked the intake but can not see any leaks. Not ...
November 05, 2007
2006 Volkswagen Passat 2.0T 2.0L Misfire, vacume leak VIN: WVWAK73C76
P0300: 301 302 303 304 cyl 1-4 miss fire. Car came in running rough, pulled codes listed. Also multi misfires on all cylinders. Check for vacume leak with spray and hooked up smoke machine to intake system, no leaks with smoke machine, but did encounter some leaks with carb spray, but never in the sam...
November 05, 2007
2003 Isuzu Rodeo S 2.2L Misfire, MIL Lamp on VIN: 4S2CK58D31
P0300: Multiple Cylinder Misfire Detected. performed compression test #1=210 / #2=210 / #3=190 / #4=210 / engine misfires like a secondary miss . it does it at idle & at cruise . even under load . sets random missfire code. no other codes set.
November 06, 2007
2002 Toyota Celica GT 1.8L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: JTDDR32T72
P0300: Multiple Cylinder Misfire Detected. This vehicle was originally brought in for a rough run and mil light on. scanned codes found codes for multiple cylinder misfire. Removed plugs and found to be bad, so replaced plugs and cleared light. rechecked operation still has misfire present. suspected c...
November 06, 2007
2000 Audi TT 1.8L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: TRUTC28N7Y
We are experiencing a hard start on cold start, back firing, hesitation with reduced acceleration capabilities. Engine runs better when warmed up, provided that it will run long enough to warm up. We have recieved input/suggestions from AUDI dealerships with n...
November 07, 2007
2003 Audi A4 3.0L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: WAULT68E03
P0300: random/multiple misfire. This vehicle has been running great. All of a sudden hesitation sputter and had no power. Vehicle towed in and all misfire codes were retrieved.Erased codes and test drove. Ran good for couple miles and then hesitated with check engine light on. Code po300 and...
November 07, 2007
2002 Kia Sportage 2.0L No Start, Poor Idle Quality, Cuts out, Stall, Misfire, MIL Lamp on VIN: KNDJA62352
P0300: Random Cylinder Misfire Detected. hello all Im having trouble with this kia sportage on the first start up of the day the car will run fine until you step on the gas it emediately goes into a skipping of all cylinders and stalls when you try to restart it acks like it is flooded badly the only...
November 07, 2007
2001 Oldsmobile Alero GL 3.4L Misfire VIN: 1G3NL52E11
P0300: Multiple Cylinder Misfire Detected. ... complained of an intermittant miss but no service engine light & no codes. Test drove car about 50 miles before it missed & only # 1 cylinder is showing any missfire. After about another 50 miles the check engine light finally started flashing when...
November 08, 2007
2003 Acura MDX 3.5L No Start VIN: 2HNYD18203
P0300: Random Misfire Detected. This one came from another shop. Cranking hard or no start cold. If it sits overnight it has to be huffed lightly with starting fluid to start. Then it will act lean and pop and miss until it gets warm then runs fine. Pulled spark plugs when it was cold after ...
November 09, 2007
2004 Nissan Frontier SVE 3.3L Misfire VIN: 1N6MD29Y04
P0300: Multiple Misfire Detected. ... point of needing people to stay on track hopefully someone can place me back on track on this job. This was a finish up of a tune up (cap, rotor, fuel filter from 3 months ago) that turned sour I know basics but just wishing someone has been down same ...
November 09, 2007
1998 Chevrolet Astro 4.3L Misfire, MIL Lamp on VIN: 1GCDM19WXW
P0300: Multiple Cylinder Misfire Detected. Hey GM guys, need some help here. Vehicle came to us from another shop to start off with. To start we Checked computer codes: po300=random cylinder misfire. watched misfire pattern and noticably missing at idle on cylinder #2. The higher the rpms it moves comp...
November 12, 2007
1999 Toyota Camry CE 2.2L Misfire, MIL Lamp on VIN: 4T1BG22K5X
P0300: Multiple Cylinder Misfire Detected. Hello All, I recently did a timing belt and water pump on this car and the car came back a couple of days later with the MIL on for codes PO300, PO302 and PO303. It did not have an MIL on before. I looked at the misfire pids and sure enough it is showing misf...
November 12, 2007
1998 Dodge Neon High Line 2.0L Misfire VIN: 1B3ES47Y0W
P0300: Multiple Cylinder Misfire Detected. tested injectors, no problem found. ohm to 12 ohms. used external injector testor and cycled injectors through the pcm harness and measured amp with labe scope. they were consitant .8 to 1 amp. installed a 2 amp fuse on the injector power feed by splicing into...
November 13, 2007
1996 Toyota T100 SR5 3.4L Misfire, MIL Lamp on, WONDERING MISS FIRE VIN: JT4UN24D4T
P0300: Multiple Cylinder Misfire Detected. this engine will run good for about 45 miles then miss starts to happen randemly, cold or hot. fuel pressurs stays good, fuel trim adds fuel. im at my witts end. help plz!
November 13, 2007
2004 Toyota Matrix 1.8L Misfire VIN: 2T1KR32E04
P0300: Multiple Cylinder Misfire Detected. Hey toyota techs.Hope you can help me on this one.This Matrix XR has a bad multiple cylinder misfire.First tried new dealer plugs and no change.Cleaned the MAF and still no change.Tried to swap coils to the cylinder not misfiring and it still doesn't misfire.S...
November 13, 2007
1999 Chevrolet Tahoe LS 5.7L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1GNEK13R1X
P0300: Multiple Cylinder Misfire Detected. This vehicle cuts out and at the same time the tach starts to jump around, drop out. It seems though the ignition is cutting out for a split second. any help would be appreciated.
November 14, 2007
2001 Chevrolet Express 3500 5.7L Misfire, MIL Lamp on VIN: 1GBHG31R41
P0300: Multiple Cylinder Misfire Detected. ... it has me stumped.To begin with I had put a reman motor in about four months ago with no problems, last week it had come in with a check engine light on ,code p0300. I had check the basics and replaced the distributor cap and rotor.When road tested the mis...
November 14, 2007
2003 Dodge Ram 2500 Truck 5.7L Cuts out, Stall, MIL Lamp on VIN: 3D7KU28D33
P0300: Multiple Cylinder Misfire Detected. Customer came in with these codes last week, We did a quick visual check of the connectors on the PCM and CKP sensor and they looked ok. We replaced the CKP sensor, and cleared the codes. Dealer did not have NVLD solenoid in stock so we sent him out for the we...
November 14, 2007
2004 Toyota Matrix 1.8L Misfire VIN: 2T1KR32E04
P0300: Multiple Cylinder Misfire Detected. Hey toyota techs.Hope you can help me on this one.This Matrix XR has a bad multiple cylinder misfire.First tried new dealer plugs and no change.Cleaned the MAF and still no change.Tried to swap coils to the cylinder not misfiring and it still doesn't misfire.S...
November 14, 2007
2001 Dodge Intrepid ES 2.7L Misfire VIN: 2B3HD4CR11
P0300: Multiple Cylinder Misfire Detected. Hello all and thanks in advance. I am working on this Intrepid. It came to me with a misfire that occurs after accelerating. Watching the misfire monitor it is always cylinders 5 and 6. (The rear on each bank) I have switched coils but no change. I have scope ...
November 15, 2007
2001 Chevrolet Astro 4.3L Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1GCDM19W11
P0300: Multiple Cylinder Misfire Detected. ... misfire and running bad. I check codes. P0300 and P0335 were in computer. I change crank sensor. No change still have misfire and crasnk code. I have since then removed upper intake inspect gasket and look to see if there were any signs of fuel rail proble...
November 16, 2007
2001 Nissan Sentra SE 2.0L Misfire, hard start VIN: 3N1BBS1D71
P0300: Multiple Misfire Detected. Alright guys this car has a hard start problem and misfire once you get it started. It also will not take gas very well. It wants to choke down if you go full throttle. Unless you pedal the gas the car will just start and stall. But if you pedal the gas it wil...
November 19, 2007
2000 Mercedes-Benz ML320 3.2L Misfire, MIL Lamp on VIN: 4JGAB54E8Y
P0300: Multiple missfires. This Benz came in with codes for all cylinders in right bank missing. Fuel trim numbers look good so don't suspect MAF problem, plus it was replaced not long ago. A search of the archives revealed a lot of missfires caused by plugged cats. On a test drive, und...
November 20, 2007
2005 Nissan Maxima SL 3.5L No Start, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire VIN: 1N4BA41E75
P0300: Multiple Misfire Detected. I have an 05 maxima here will not stay idling sometimes it will surge from 800- 2500 the tachometer bouning a lot right before it dies when cold it's beter gets worth as it's warm up all that started when owner let his young son drive this car. i suspect abuse...
November 20, 2007
2002 Mercedes-Benz C240 2.6L Misfire, MIL Lamp on VIN: WDBRF61J02
P0300: random missfire. car came in from another shop my brick can't communicate either odbII generick or the benz cart hooked up a genisis no commun. in m/b mode got codes from odbII generick hellllllp THANKS mark
November 25, 2007
2001 Chevrolet Astro 4.3L Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1GCDM19W11
P0300: Multiple Cylinder Misfire Detected. ... misfire and running bad. I check codes. P0300 and P0335 were in computer. I change crank sensor. No change still have misfire and crasnk code. I have since then removed upper intake inspect gasket and look to see if there were any signs of fuel rail proble...
November 26, 2007
2002 Mercedes-Benz C240 2.6L Misfire, MIL Lamp on VIN: WDBRF61J02
P0300: random missfire. car came in from another shop my brick can't communicate either odbII generick or the benz cart hooked up a genisis no commun. in m/b mode got codes from odbII generick hellllllp THANKS mark
November 26, 2007
1999 Chevrolet Cavalier 2.2L Poor Idle Quality, Hesitation, Surge, Misfire, MIL Lamp on VIN: 1G1JF524X7
P0300: Multiple Engine Misfire Detected. When vehicle first came in I scope tested found new plugs and wires(custumer installed.Went to injectors and scoped those with patterns.I replace coil pack with a known good one.I also replaced plugs and wires.I still have a random missfire at times and at oth...
November 27, 2007
2001 Pontiac Grand Am SE 2.4L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire VIN: 1G2NF52T81
P0300: Multiple Cylinder Misfire Detected. ... Came in 2 months/2k prior for running poor, miss. miss was #1,#3 cylinders, found burnt coil housing. replace 2 coils, housing, spark plug boots, and spark plugs. Vehicle was back 1 month/1k ago for died on road, replaced fuel pump. Now vehicle towed back ...
November 28, 2007
2000 Oldsmobile Alero GL 2.4L Misfire VIN: 1G3NL52T9Y
P0300: Multiple Cylinder Misfire Detected. hello, this is the story... the car came in 4 months ago running very poorly ... misfiring code po300, felt like was running on 2 cylinders. without testing anything our initial inspection revealed all original ignition components. replaced all secondary ignit...
November 29, 2007
2003 Chevrolet Impala LS 3.8L Hesitation, lack of power VIN: 2G1WH52K13
P0300: Multiple Cylinder Misfire Detected. Hello everyone, Thanks now for the advice. I am the third tech to attemp repair on this vehicle and am stumped. Vehicle came in with a P0401 code and a lack of power. They replaced to EGR valve which cleared the code. When running at light throttle vehicle run...
November 30, 2007
1996 Pontiac Grand Am SE 2.4L Poor Idle Quality, Misfire VIN: 1G2NE12T6T
P0300: Multiple Cylinder Misfire Detected. ... missing very bad. checked codes (no light) p0300 misfire.checked mis data all 4 cyl 0's (my scanner always shows ign misses sofar) check engine data lt fuel trim avg -100%,lt ft -11.7, short ft 0% st ft avr -100%, spark advance eratic 1-30+ deg,map 16 , te...
November 30, 2007