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P0300 Diagnostic Trouble Code Discussion for October 2007

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
1998 Chevrolet Tracker 1.6L Misfire VIN: 2CNBJ1368W
P0300: random cyl. misfire. fellow techs. got a real teaser,initially I had a problem with number 3 cyl. spark was good right to the cyl. I tested the spark plug,OK. tested the firing of the injector,OK. flow tested the injector,OK. I performed a injector flush, the engine ran worse. I r...
October 01, 2007
2003 Ford Ranger XL 2.3L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1FTYR1OD23
P0300: random misfire. ... listed codes p2014,P0316,B1600,P0300,P0302,p0304 and a misfire. No history of problems with this truck until this morning. I pulled the truck in and ran the codes and let it idle for a minute...apeared to quit missing. i t...
October 01, 2007
1995 Lexus GS300 3.0L MIL Lamp on VIN: 1J8BD42S4T
P0300: Random Misfire. Greetings, Another mind bender. Car was in our shop for major work-- steering rack and pump, major service, timing belt, and the check engine light was on for an EGR code--only stored code. We ended up cleaning all the EGR passages and replaced the EGR valve a...
October 01, 2007
1996 Lexus SC300 3.0L MIL Lamp on VIN: JT8CD32Z4T
P0300: Multiple Cylinder Misfire Detected. Vehicle came in for oil leaks. Valve cover gaskets, cam seals, crank seal, P/S pressure hose and steering rack were replaced. After repairs were completed, MIL illuminated and began flashing with 3 misfire codes listed below being stored. The misfire PIDs fo...
October 01, 2007
2003 Ford Ranger XL 2.3L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1FTYR1OD23
P0300: random misfire. ... listed codes p2014,P0316,B1600,P0300,P0302,p0304 and a misfire. No history of problems with this truck until this morning. I pulled the truck in and ran the codes and let it idle for a minute...apeared to quit missing. i t...
October 02, 2007
2001 Lexus RX300 3.0L Poor Idle Quality, Hesitation, Surge, Stall, Misfire, MIL Lamp on VIN: JTJTF10U21
P0300: random cylinder misfire. this is the owners wifes vehicle: we brought it in to do a routine 100,000 mile maintenance. timing belt(toyota timing belt), spark plugs(ngk spark plugs), water pump, cam and crank seals, pcv valve, engine and cabin air filters, drive belts & we also serv...
October 02, 2007
2001 Saturn L300 3.0L Misfire VIN: 1G8JW53R51
P0300: Random Misfire Detected. Veh came in 3 months ago with a misfire on Cyl. #3. Found the 1-2-3 coil was bad. Replaced coil, misfire gone... Veh returned last week with a Random misfire code (Po3oo). After connecting scanner found that cyl. # 6 has a constant misfire. Replaced coil and I...
October 02, 2007
1997 Chevrolet Blazer 4.3L Hesitation, no power VIN: 1GNDT13W5V
P0300: Multiple Cylinder Misfire Detected. hi everybody, hope you can help with this one. vehicle brought to me after all this work. runs like it has a resricted exhaust. did a backpresure test and found over 10psi. removed convertor & roadtested-still runs the same I rechecked distributor install ...
October 03, 2007
1999 Chevrolet Silverado 1500 4.3L MIL Lamp on VIN: 1GCEC14W4X
P0300: Multiple Cylinder Misfire Detected. ... 50mile/hr but if you go 65 & up check engine light flashes & set the DTC P0300. Checked compression--145 +- 10psi(Good), I replaced all the related parts(including MAF). but still same problem. I really appreciated your input on this problem. Thank...
October 03, 2007
1999 GMC Savana 1500 5.0L Misfire VIN: 1GKFG15M9X
P0300: Multiple Cylinder Misfire Detected. 3 weeks ago van in for misfire, - checked and found #7 injector bad - replaced engine ran perfect. prior to coming to our shop , van had cap rotor and wires replaced at another shop. same complaint of intermittent misfire on #7. upon return van set code for mi...
October 03, 2007
1998 GMC Jimmy Envoy 4.3L Excessive Emissions, Stall, popping on accel VIN: 1GKDT13W1W
P0300: Multiple Cylinder Misfire Detected. Please Help!! We have ran out of ideas. Truck runs great after warm. Only On cold start within first 10 minutes dies right out. Vehicle pops on acceleration thru intake we can feather gas pedal sometimes to allow the truck to rev up. Please note all parts list...
October 04, 2007
2002 Mazda Protege5 2.0L Poor Idle Quality VIN: JM1BJ24582
P0300: Multiple Misfire Detected. Hi all, I have the above mentioned vehicle in our shop today. The vehicle arrived this morn with a heavy surge/chug and light missfire at idle, yet smoothes out upon acceleration. The mentioned codes are present, I believe the missfire is present due to a poss...
October 04, 2007
2003 Suzuki Grand Vitara 2.5L Misfire VIN: JV3MD62V43
P0300: Multiple Cylinder Misfire Detected. Vehicle camn in with MIL light flashing on light acceleration. Scanned vehicle computer and found 2 codes, PO300 - random misfire and PO305 - Cylinder 5 Misfire. Swapped #3 & #5 coil still have misfire on #5. Checked spark from coil with spark tester good ...
October 04, 2007
2001 Volkswagen Jetta GLS 1.8L Surge, Cuts out, MIL Lamp on VIN: 3VWSD69M61
P0300: . ... repeted p1297(17705)& PO300.I have checked the hoses & connections from the turbo to the throttle body & can not find any leaks! The car will be back on Monday, & I plan to clean the throttle body & replace plugs (due at 80k anyway). I ...
October 04, 2007
2001 Chevrolet Silverado 1500 HD LS 6.0L Hesitation, Surge, Stall, MIL Lamp on VIN: 1GCGK13U91
P0300: Multiple Cylinder Misfire Detected. ... of stalling and power loss. the check engine light had come on. We scanned the computer and had a code p0300 in memory. Freeze frame data showed the ST fuel trim bnk 1 at -35% LT at -14%, bnk 2St 3% and LT at 0%. bnk 1 pw at 6.9 and pw bnk 2 at 13ms. occur...
October 05, 2007
1999 Toyota Solara SE 3.0L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2T1CF22P4X
P0300: Multiple Cylinder Misfire Detected. This vehicle came in with a running rough, black smoke, exhaust leak, blinking check engine light, no power. Checked the basics, code lead to rear bank misfire. This vehicle has the coil over on the front of the engine and wires going to rear cylinders, checke...
October 05, 2007
2002 Chevrolet Impala 3.8L Misfire VIN: 2G1WF55K52
P0300: Multiple Cylinder Misfire Detected. ... worn out. replaced plugs, and road tested. misfire p0300 then p0303. replaced spark plug wires and test drove again. Did some better but under hard acceleration misfiring and and no power....
October 08, 2007
2005 Dodge Ram 1500 Truck ST 5.7L Hesitation, Cuts out, Stall, MIL Lamp on VIN: 1D7HU16D15
P0300: Multiple Misfire Detected. Hello all, got this 05 dodge ram just out of warranty. Intermittenly truck will stall while sitting at stoplight at idle. On accel truck will start to pop and misfire and loose power, earlier today on accel truck was acting like it was hitting the rev limiter ...
October 08, 2007
2001 Cadillac DeVille 4.6L Misfire, MIL Lamp on VIN: 1G6JD54V21
P0300: Engine Misfire Detected. ... Cyl 8 and 6 have misfire history in the 2000-4000 range. cyl 2 and 4 are in the 50-300 range and mayjust be as a result of the major misses on 6 and 8. My fuel trim shows adding 34% at the freeze frame for the p0300 but only on bank 2 (cyl 2,4,6,8) fuel tr...
October 09, 2007
1999 Mazda Miata 10th Anniversary 1.8L MIL Lamp on VIN: JM1NB3532X
P0300: Random Misfire Detected. ... questions on. Has this P0402 that keeps coming back. So far I have pulled the Egr to check that the passages aren't clog, check the EGR boost sensor, and MAP sensor. The passages don't seem to be clogged when we pull of the EGR and start the car it wants t...
October 09, 2007
2001 Chevrolet Silverado 2500 HD 6.0L MIL Lamp on VIN: 1GHK24UX1E
P0300: Multiple Cylinder Misfire Detected. ... for cyl # 1 and 6 while my scanner is connected and it seems to run and drive perfect. p0300,301 and 306 keeps coming up . I checked tsb's and found injector problems to be common, some alarm systems causing problems, and...
October 10, 2007
2003 Suzuki Grand Vitara 2.5L Misfire VIN: JV3MD62V43
P0300: Multiple Cylinder Misfire Detected. Vehicle camn in with MIL light flashing on light acceleration. Scanned vehicle computer and found 2 codes, PO300 - random misfire and PO305 - Cylinder 5 Misfire. Swapped #3 & #5 coil still have misfire on #5. Checked spark from coil with spark tester good ...
October 11, 2007
2003 Honda Odyssey EX 3.5L Poor Idle Quality, Surge, Misfire, MIL Lamp on VIN: 5FNRL18963
P0300: Random Misfire Detected. Hi Honda Techs! I hope you can give me some pointers on where to go with this van. Last week, I had this Honda Odyssey come in for a brake job. Upon driving it, I noticed that the MIL lamp was flashing and it was running pretty bad. After doing the brakes, I p...
October 15, 2007
1999 Buick LeSabre Custom 3.8L Misfire VIN: 1G4HP52K1X
P0300: Engine Misfire Detected. I have a 3.8 with multiple cylinder missfires #3 #6 cylinder miss at same time I have tried replacing the coil and module with known good wires and plugs are new and look ok what I want to know is there something related to these two cylinders (cam sync or cra...
October 16, 2007
2004 Chevrolet Suburban 1500 LS 5.3L Misfire VIN: 3GNFK16Z74
P0300: Multiple Cylinder Misfire Detected. Hi Chevy Techs, I have been helping another shop on this Suburban and there is another vehicle at another shop doing the same thing. Number seven cylinder has a misfire at idle. When you raise the rpm's to around 1500, the misfire goes away. If you go above 1...
October 16, 2007
2003 Honda Odyssey EX 3.5L Poor Idle Quality, Surge, Misfire, MIL Lamp on VIN: 5FNRL18963
P0300: Random Misfire Detected. Hi Honda Techs! I hope you can give me some pointers on where to go with this van. Last week, I had this Honda Odyssey come in for a brake job. Upon driving it, I noticed that the MIL lamp was flashing and it was running pretty bad. After doing the brakes, I p...
October 16, 2007
1997 Pontiac Sunfire SE 2.2L No Start, MIL Lamp on VIN: 1G2JB524V7
P0300: Multiple Engine Misfire Detected. vehicle will try and start but it backfires threw the intake, like its out of time and dies, spark plugs are black vehicle is flooding out.checked compression, shows 125psi on all cylinders.vehicle did run for 5 minutes one time. checked vacuum while running i...
October 16, 2007
2001 Chevrolet Silverado 1500 5.3L Misfire, MIL Lamp on VIN: 2GCEK19T01
P0300: Multiple Cylinder Misfire Detected. This pickup came in for a tune up. It was running ok but he wanted to get ready for winter. I changed the plugs and fuel filter. when I was finished it had a miss on number 8 cylinder. I shut it off and checked to make sure I had the wire on tight when I resta...
October 17, 2007
2003 Chevrolet Astro 4.3L Hesitation, Surge, Misfire, MIL Lamp on, LACKS POWER VIN: 1GNEL19X23
P0300: Multiple Cylinder Misfire Detected. ... cheverlet astro awd. codes p0101 and p0300, seem to be related, had some abs codes too ,no results, cleared abs and engine codes, still clear after several drives. concern is lack of power. goes fine on the flat. up to 65...
October 17, 2007
2004 Chevrolet Suburban 1500 LS 5.3L Misfire VIN: 3GNFK16Z74
P0300: Multiple Cylinder Misfire Detected. Hi Chevy Techs, I have been helping another shop on this Suburban and there is another vehicle at another shop doing the same thing. Number seven cylinder has a misfire at idle. When you raise the rpm's to around 1500, the misfire goes away. If you go above 1...
October 17, 2007
2005 Chrysler 300 (Car) C 5.7L Misfire VIN: 2C3JA63H05
P0300: Random misfire. ... Chrysler techs who see this. This 300C Hemi has 1 code, P0300 for random misfire. Code is not current. No fault freeze data shown on either of my aftermarket scan tools. But, fuel pressure is good at 63psi, I can scope the coils with my Vantage Pro and all...
October 17, 2007
1999 Buick LeSabre Custom 3.8L Misfire VIN: 1G4HP52K1X
P0300: Engine Misfire Detected. I have a 3.8 with multiple cylinder missfires #3 #6 cylinder miss at same time I have tried replacing the coil and module with known good wires and plugs are new and look ok what I want to know is there something related to these two cylinders (cam sync or cra...
October 18, 2007
2002 Chevrolet Astro LS 4.3L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GNEL19X12
P0300: Multiple Cylinder Misfire Detected. #4 cylinder counts up on mis-fire counter, mis-fire diminishes at part throttle and under load. air checked cylinder for leakage. has some leakage.
October 18, 2007
2003 Chevrolet Astro 4.3L Hesitation, Surge, Misfire, MIL Lamp on, LACKS POWER VIN: 1GNEL19X23
P0300: Multiple Cylinder Misfire Detected. ... cheverlet astro awd. codes p0101 and p0300, seem to be related, had some abs codes too ,no results, cleared abs and engine codes, still clear after several drives. concern is lack of power. goes fine on the flat. up to 65...
October 18, 2007
2003 GMC Sierra 1500 5.3L Hesitation, Misfire VIN: 1GTEK14X3Z
P0300: Multiple Cylinder Misfire Detected. ... code p0300, cylinder 2,4,6,8 all showed misfires when cold, after the truck runs alittle the miss clears up. bank 2 sensor 1 o2 senser read 1107 when first started then starts reading normal. after senor read truck runs great. the miss and o2 happens after...
October 18, 2007
1996 Oldsmobile Cutlass Ciera 3.1L poor accelleration VIN: 1G3AJ55M3T
P0300: Multiple Engine Misfire Detected. ... go when he pushed gas pedal. Code P0300 stored in computer. Compression and vacuum OK. I removed the O2 sensor, car ran MUCH better. Reinstalled O2 sensor and replaced clogged cat converter. Car accellerates better, but not correctly. I finally noted a cor...
October 18, 2007
1997 Chevrolet Blazer 4.3L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 1GNCS13W4V
P0300: Multiple Cylinder Misfire Detected. OK guys, this truck came to me milked. New coil, ign. module, cap, rtr, cts, plugs, wires, ckp snsr., harm. bal. already installed by another shop. It starts and runs good cold. It warms up and still seems to run well. After 5 or 10 mins. of driving with eng....
October 22, 2007
2001 Chevrolet Express 3500 5.7L Misfire, MIL Lamp on VIN: 1GBJG31R51
P0300: Multiple Cylinder Misfire Detected. van came in the shop for engine replacement, after rebuild engine was fired up there is a miss fire i can not fix, cylinder 1 & 2 are the ones missing, i have tried all most everything diferent ign. cables, spark plugs, injectors, known good distributor,e....
October 22, 2007
2002 Chevrolet Astro LS 4.3L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GNEL19X12
P0300: Multiple Cylinder Misfire Detected. #4 cylinder counts up on mis-fire counter, mis-fire diminishes at part throttle and under load. air checked cylinder for leakage. has some leakage.
October 22, 2007
1997 GMC K1500 Sierra SL 5.7L Misfire, MIL Lamp on VIN: 2GTEK19RXV
P0300: Multiple Cylinder Misfire Detected. I have a random miss fire code p0300 . cheaked miss fire data cyl # 3 miss firing with a miss on cyl# 6 thats sporatic . tune up was done .Truck was looked at by A GM dealer fuel injetors where then replaced . compresion cheak done and valve train on cyl 3 was...
October 24, 2007
2007 Chevrolet Tahoe LTZ 5.3L Misfire VIN: 1GNFK13037
P0300: Multiple Engine Misfire Detected. The tahoe came in with a SES light on.. P0300.. It seems to miss the most on cylinder 8 at about 1500 to 1600RPM.(about 53mph) Mostly at cruise speed, or on a slight decell. I've checked plugs, wires, coils, fuel injectors ect. I switched these components from...
October 26, 2007
2001 Saab 9-3 SE 2.0L Poor Idle Quality VIN: YS3DF75KX1
P0300: random mutiple misfires. Hey, Sweedish car lovers, here's my Saab Story: This little convertible belongs to my dentist, so I've got to get it right or I'm afraid he's going to go all "Marathon Man" on me at the next root canal. We swapped the head gasket to solve an oil leak a...
October 26, 2007
1999 Volkswagen Golf Wolfsburg Edition 2.0L No Start VIN: 3VWJA81H8X
P0300: random misfire. Came in with wet running problem, after wet test, replaced coil/module assembly, this is a distributor type ignition, not a distributorless (I had to enter distributorless on post as you don't allow any other than distributorless or diesel). Never ran since, t...
October 26, 2007
2001 Chevrolet Express 1500 4.3L Hesitation, Misfire, MIL Lamp on
P0300: Multiple Cylinder Misfire Detected. ... and off for month and a half now. Came in running rough with a miss on #1 compression test revealed no compression on #1 replaced intake valve compression is back to 150 so are all other cylinders here is the catch is still counting missfires on #1 check e...
October 28, 2007
2003 Audi A6 Quattro 4.2L Excessive Emissions, Misfire, MIL Lamp on VIN: WAUML64B13
P0300: random cylinder misfire. Customer previously had the Audi to another shop. They installed 8 new coils and an air mass meter,-genuine Audi parts. The Audi will idle steady and not misfire. While watching the misfire counter on the vag scanner you can see misfires in all 8 cylinders whe...
October 29, 2007
2001 Mazda Protege ES 2.0L Misfire, MIL Lamp on VIN: JM1BJ22591
P0300: Multiple Misfire Detected. hello all, i am dealing with a 2001 mazda protege that has an intermittent misfire that causes the engine to die or stumble. it has code p300 (random/multiple misfire). both of the coils check out fine.
October 31, 2007