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P0300 Diagnostic Trouble Code Discussion for June 2007

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
1999 Mercedes-Benz ML430 4.3L Misfire VIN: WDC1631722
P0300: b miss damages twc. HI GUYS, GREATINGS FROM DOWN UNDER, "Sorry for the obvious Pun and hope you read on. We road tested and drove this ML430 quit hard, (always recommended if an intermittent fault) it failed and started to loose power, after a number of, ignition off/on reset...
June 01, 2007
1999 Honda Accord LX 2.3L Hesitation, Misfire, MIL Lamp on VIN: 1HGCG6658X
P0300: Multiple Misfire Detected. ... missfire and check engine light. i pulled the all misfire codes and 2 mass air meter codes. i took car of the air meter codes by replaceing it. For the missfire we did plugs wires cap ect. and it was fine. little did we know the car started to miss agian a...
June 05, 2007
1999 Honda Accord LX 2.3L Hesitation, Misfire, MIL Lamp on VIN: 1HGCG6658X
P0300: Multiple Misfire Detected. ... missfire and check engine light. i pulled the all misfire codes and 2 mass air meter codes. i took car of the air meter codes by replaceing it. For the missfire we did plugs wires cap ect. and it was fine. little did we know the car started to miss agian a...
June 06, 2007
1998 Toyota Camry CE 3.0L Misfire, MIL Lamp on VIN: 4T1BF28K7W
P0300: Multiple Cylinder Misfire Detected. ... also: P0301, P0303, P0305. From the scan data it appears bank one cylinders all show intermittent multiple misfires. After driving for a few hours it will kick the misfire codes. no other c...
June 06, 2007
1999 Chevrolet K1500 LS 5.7L Poor Idle Quality, Misfire, Poor Fuel Economy VIN: 1GCEK19R5X
P0300: Multiple Cylinder Misfire Detected. The last thing I changed was to two injectors cause #8 & 4 were not spray good but it seem to get worse .
June 07, 2007
1999 Chevrolet K1500 Suburban 5.7L Misfire, MIL Lamp on VIN: 1GNFK16R9X
P0300: Multiple Cylinder Misfire Detected. I found lots of info in the archives on this problem, but can't put my finger on this one. I have a miss at idle on #3 and #8 and a miss under heavy load on #4 without #3 and #8 missing. Delco fuel pump was in stalled due to flow issues and serious lack of pow...
June 11, 2007
2003 GMC Sierra 1500 HD SLE 6.0L Misfire VIN: 1GTGK13U03
P0300: Multiple Cylinder Misfire Detected. ... overlooking something. Truck came in with intermitant flashing mil, code p0300 random missfire. On road test at highway speed cylinders 1,5,6 & 8 rack up missfire data and missfire can be felt. No missfire at idle but it is not as smooth as I would lik...
June 11, 2007
2003 Toyota Tundra SR5 4.7L Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 5TBRT34193
P0300: Multiple Cylinder Misfire Detected. ... runs like complete crap when cold. Multiple missfires, no power, shaking, backfire thru intake, smoke out exhaust. p0300 plus p0301-p0308 at different times and random. Replaced plugs, I replaced a couple coils. The truck runs great after about 5 minutes o...
June 11, 2007
1999 Chevrolet Malibu 2.4L No Start, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G1ND52T1X
P0300: Multiple Cylinder Misfire Detected. ... headache car, first came in no start, customer claim it stall out on them, tow to Canadian Tire store, Code P0300 random misfire cyl detect, quote for 4 AC injector and fuel regulator, but don't garauntee it will fix the problem, customer tow it home, they...
June 13, 2007
1996 Chevrolet Blazer 4.3L MIL Lamp on VIN: 1GNDT13W3T
P0300: Multiple Cylinder Misfire Detected. Vehicle runs fine, no symptoms except that the MIL comes on with in one day of clearing the codes. I am leaning towards a fuel pressure problem, but would like a second opinion due to the expense of a regulator. Fuel pressure readings listed below in test sect...
June 14, 2007
1999 Chevrolet Malibu 2.4L No Start, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G1ND52T1X
P0300: Multiple Cylinder Misfire Detected. ... headache car, first came in no start, customer claim it stall out on them, tow to Canadian Tire store, Code P0300 random misfire cyl detect, quote for 4 AC injector and fuel regulator, but don't garauntee it will fix the problem, customer tow it home, they...
June 15, 2007
2002 Chevrolet Astro LS 4.3L Misfire, MIL Lamp on VIN: 1GNDM19X82
P0300: Multiple Cylinder Misfire Detected. Vehicle came in for a CEL and misfire. The misfire was on cylinder 1. Performed compression test, Lab scope, leak down,checked crank sensor, MAF, Fuel pressure, switched injector to another cylinder with no change. Removed head and had head checked. Found a ti...
June 15, 2007
1999 Dodge Ram 1500 Van 5.2L Hesitation, Misfire, MIL Lamp on VIN: 1B7HF13Y7X
P0300: Multiple Cylinder Misfire Detected. vehicle brought in after vehicle stalled and hard start - i suspected vehicle flooded so under wot vehicle started to get in shop. misfiring at idle - replace cap, rotor and wire set (felt arcing through wires) truck no longer misses at idle but on road test t...
June 18, 2007
1999 GMC Savana 3500 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GTHG39R3X
P0300: Multiple Cylinder Misfire Detected. Ok, so this vehicle came in with PO1345, removed the distributor cap, rotor was loose, replaced cap and rotor and rechecked. Cam retard was at 16. Removed distributor assembly, found that distributor gear was severely worn, replaced distributor, set cam retard...
June 18, 2007
2000 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCEK19T7Y
P0300: Multiple Cylinder Misfire Detected. ... of MIL. At that time only DTC p0300b ws present. Bank one was adding fuel and bank 2 was subtracting fuel. Y pipe and o2 sensors were coated with mud and stuff. Repair trac info and fix database show pattern converter failures, owner wanted vehical that da...
June 20, 2007
2003 Chevrolet Avalanche 1500 5.3L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 3GNEC13T33
P0300: Multiple Cylinder Misfire Detected. runnig at road speed lost power towed to shop no power poor idle
June 20, 2007
2000 Honda Accord EX 2.3L Misfire, MIL Lamp on VIN: 1HGCG5664Y
P0300: Multiple Misfire Detected. Cust came in last week with MIL on, P0133, O2 slow response. I looked at a wiring diagram, spliced the new 'universal' sensor in, road tested and cleared the code. I was pretty careful about the wiring and used the sensors instructions along with an engine wir...
June 20, 2007
2000 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCEK19T7Y
P0300: Multiple Cylinder Misfire Detected. ... of MIL. At that time only DTC p0300b ws present. Bank one was adding fuel and bank 2 was subtracting fuel. Y pipe and o2 sensors were coated with mud and stuff. Repair trac info and fix database show pattern converter failures, owner wanted vehical that da...
June 21, 2007
1998 Pontiac Grand Am SE 2.4L Poor Idle Quality, Misfire VIN: 1G2NE12T5W
P0300: Multiple Cylinder Misfire Detected. ... last week with check engine light and running bad. checked codes found only one,p0301 misfire on cylinder #1.pulled tower assembly,tower was cracked and coils have been arching. we replace coils,boots,tower and plugs.car left running fine a week later car ...
June 21, 2007
1998 Chevrolet K1500 Cheyenne 5.0L Misfire, MIL Lamp on VIN: 2GCEK19M2W
P0300: Multiple Cylinder Misfire Detected. truck misses at light load or pulling trailer under light load on #7 and #2 can duplicate it in 2nd gear at about 2000 rpm, all scan tool data is good not running lean or rich as far as i can tell with one cyl missing on each bank, fuel trim is at the most +6....
June 22, 2007
1997 Toyota Tacoma DLX 2.4L Misfire VIN: 4TANL42N2V
P0300: Multiple Cylinder Misfire Detected. This vehicle has a misfire/poor idle for a very short amount of time on a dead cold start, starts and runs fine afterwards. Had codes stored, but was unable to duplicate after clearing the codes, nor do the misfire monitors indicate misfiring. I looked for a c...
June 22, 2007
2001 Mitsubishi Eclipse RS 2.4L Misfire VIN: 4A3AC34G91
P0300: Random Misfire Detected. ... check engine light and rough running complaint. after checking codes found a p0300. inspected coils, found number 1/4 coil practically melted, replaced coil but still no fire from coil. i do not own a scope, but i have check for signal from ecm, has signal...
June 25, 2007
1998 Chevrolet K1500 Cheyenne 5.0L Misfire, MIL Lamp on VIN: 2GCEK19M2W
P0300: Multiple Cylinder Misfire Detected. truck misses at light load or pulling trailer under light load on #7 and #2 can duplicate it in 2nd gear at about 2000 rpm, all scan tool data is good not running lean or rich as far as i can tell with one cyl missing on each bank, fuel trim is at the most +6....
June 26, 2007
2001 Chevrolet Express 1500 4.3L Hesitation, Misfire, MIL Lamp on VIN: 1GCEG15W81
P0300: Multiple Cylinder Misfire Detected. This one has got me stumped. Customer complaint is MIL on and pinging noise under load or at highway speeds. Test drive vehicle, with Tech II scan tool, and watch misfire data. Found that cylinder #2 is misfiring on scan tool but no noticable misfires are felt...
June 26, 2007
2005 Chevrolet Silverado 1500 LS 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2GCEK13T75
P0300: Multiple Cylinder Misfire Detected. First of all thanks to all who have read this request. This pick-up belongs to a good friend of mine and the day after he paid it off along came the problem. The truck intermittently on accel in the 1500-2500rpm range the truck will miss like hell. It may go d...
June 26, 2007
1999 Dodge Ram 1500 Van 5.2L Hesitation, Misfire, MIL Lamp on VIN: 1B7HF13Y7X
P0300: Multiple Cylinder Misfire Detected. vehicle brought in after vehicle stalled and hard start - i suspected vehicle flooded so under wot vehicle started to get in shop. misfiring at idle - replace cap, rotor and wire set (felt arcing through wires) truck no longer misses at idle but on road test t...
June 26, 2007
1997 Chevrolet Lumina 3.1L No Start, Poor Idle Quality, Misfire VIN: 2G1WL52M7V
P0300: Multiple Engine Misfire Detected. This car came to me on a hook. Customer stated that on his way down the highway, he experienced a couple of "bucks" acting like a misfire. It eventually lost power and stalled out. After it sat here for a few days till I could look at it, it started ve...
June 27, 2007
2001 Chevrolet Express 1500 4.3L Hesitation, Misfire, MIL Lamp on VIN: 1GCEG15W81
P0300: Multiple Cylinder Misfire Detected. This one has got me stumped. Customer complaint is MIL on and pinging noise under load or at highway speeds. Test drive vehicle, with Tech II scan tool, and watch misfire data. Found that cylinder #2 is misfiring on scan tool but no noticable misfires are felt...
June 27, 2007
2003 Chevrolet Astro 4.3L Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GNDM19X63
P0300: Multiple Cylinder Misfire Detected. this is a long post and a weird problem.. loss of power at 60 mph. cant go over 67mph. vehicle has sporatic misfires under moderate load (after wot) and mostly on cyl #2! also has occasional mis under heavy load at max speed around 60mph! the vehicle actually ...
June 29, 2007