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P0300 Diagnostic Trouble Code Discussion for October 2004

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
1996 Plymouth Grand Voyager 3.0L Excessive Emissions, Misfire, MIL Lamp on VIN: 2P4GP243XT
P0300: Multiple Cylinder Misfire Detected. Need Help,please Vehicle has been to dealer serveral times for misfire. Now here, yea.(Very Grumpy customer) Code is for cyl #4, but #6 seams to be more affected, going by scope pattern. HC clean up, off idle. But does not show like a wire or plug problem. Has...
October 01, 2004
1997 Honda Passport EX 3.2L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 4S6CK58V6V
P0300: Random Misfire Detected. This vehicle ran perfect until I replaced the timing belt, water pump, valve cover gaskets and spark plugs. Now, there is a deffinate misfire on cyl. # 1 and 3, and the master tech reports misfire on 1,3,and 5. Timing belt has been checked, rechecked and check...
October 07, 2004
1996 Oldsmobile Cutlass Supreme 3.1L Poor Idle Quality, MIL Lamp on VIN: 1G3WH12M5T
P0300: Multiple Engine Misfire Detected. This vehicle runs fine, but idles poor. I have random misfires on most cylinders but mainly on #2. I thoroughly checked out the EGR system and found nothing. I don't think it is a fuel trim problem. Adding or subtracting fuel does not help. The O2 cycles well....
October 07, 2004
1998 Acura RL SE 3.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: JH4KA9680W
P0300: Multiple Misfire Detected. vehicle acted up(misfired)once in 40 miles, on start up for a minute, after 1 hour hot soak i came in my eye
October 08, 2004
2000 Chrysler Sebring LX 2.5L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 3C3EL55HOY
P0300: Multiple Cylinder Misfire Detected. Car came in last June with low fuel mileage complaint. Changed plugs & wires Everything ok Car is back. Starts and runs normally for about 30 seconds then stalls, has lack of power, Hesitation etc Customer states that car will run bad for about 10 min. a...
October 11, 2004
1999 Ford F-250 Super Duty Lariat 5.4L Hesitation VIN: 1FTNF20LXX
P0300: Random Misfire Detected. I tested everything no trouble found.It only bucks underload. Checked everyting cannot find trouble. Initial trouble code po300. Tryed to duplicate trouble could'nt.
October 11, 2004
1997 Dodge Caravan 3.3L No Start, Cuts out, Misfire, LOSE DASH COMPONENTS VIN: 2B4GT45R7V
P0300: Multiple Cylinder Misfire Detected. this is an intermitten problem with this vehicle, runs fine for several days, then all of the sudden starts then immediately shuts off. at which time you loose all dash functions. while in our presense experienced this problem once. after a heavy down pour. wh...
October 12, 2004
1997 Chevrolet Lumina 3.1L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 2G1WL52MV9
P0300: Multiple Engine Misfire Detected. ... engine light (P0300 random cylinder missfire)and a ESC code. New plugs, wires, fuel and air filter already installed. The knock sensor was unhooked (ESC code explained). Noticable slapping noise at high idle was noted. Idles smooth and ran fine at anything...
October 13, 2004
1998 Chevrolet Cavalier 2.2L Misfire, MIL Lamp on, CYL. 1 ONLY VIN: 3G1JC5241X
P0300: Multiple Engine Misfire Detected. Car came in with check engine light on and tune up was performed. We compression tested the cylinders and all checked out ok. I switched spark plugs, wires, and coils and the miss stayed on number 1. Used my MODIS on the CKP sensor and the pattern was good. Us...
October 13, 2004
1996 Chrysler Sebring LX 2.5L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on, Lean Condition VIN: 4C3AU42NXT
P0300: Multiple Cylinder Misfire Detected. Hey guys, I got one thats making me pull my hair out. This vehicle came to me with a random miss fire code. As I scanned the system I noticed that both LT banks were running about 20%. So I turned on the smoke machine and found the EGR leaking. Then I hooked u...
October 14, 2004
1999 Chevrolet Silverado 2500 6.0L Misfire, MIL Lamp on VIN: 1GCGK29U5X
P0300: Multiple Cylinder Misfire Detected. ... light on code p0300 randonm missfire found bad fuel pressure reg. and intake leaking (vacuum leak) replaced both no luck same problem. only cylinder showing a missfire is # seven I have good spark at the plug and good pulse at the injector. pulled fuel rai...
October 15, 2004
1998 Volkswagen Jetta GLS 2.0L Stall VIN: 3VWSA81H0W
P0300: random misfire. this vehicle will normally run perfect when here.college student has had car stall twice in last two months but vehicle will usually restart.
October 18, 2004
1995 Chevrolet S10 4.3L Misfire, MIL Lamp on, VIN: 1GCCT19W6T
P0300: sets randomlyruns ok. Has set random missfire code several times over the course of 3 months of driving.(owner has cleared each time) Not acting up for us.We checked timing and found cam retard was at negative 10 degrees and according to our info it should be at 0 degrees.Truck run...
October 22, 2004
1998 Buick LeSabre Custom 3.8L Misfire VIN: 1G4HP52K7W
P0300: Engine Misfire Detected. Hello everyone and thanks in advance for any help. I have a 98 LeSabre with cylinders 3 & 4 misfiring like crazy. No other cylinder is affected. Replace spark plugs, plug wires, ignition module, pcm, had injectors rebuilt, replaced ignition coils, map sens...
October 23, 2004
1998 Buick LeSabre Custom 3.8L Misfire VIN: 1G4HP52K7W
P0300: Engine Misfire Detected. Hello everyone and thanks in advance for any help. I have a 98 LeSabre with cylinders 3 & 4 misfiring like crazy. No other cylinder is affected. Replace spark plugs, plug wires, ignition module, pcm, had injectors rebuilt, replaced ignition coils, map sens...
October 24, 2004
1996 Chevrolet Blazer 4.3L MIL Lamp on VIN: 1GNDT13W8T
P0300: Multiple Cylinder Misfire Detected. Vehicle sets multiple missfire code but I can never feel a missfire. I can test drive with the missfire graph pulled up on the tech 2 and see the missfires stack up on #3 and #6 cylinders but only when engine is at 1700 rpm give or take 25 rpm. Back in the sho...
October 24, 2004
1999 Mazda Miata 10th Anniversary 1.8L Misfire, MIL Lamp on VIN: JM1NB3537X
P0300: Random Misfire Detected. This car came in about 2 months ago for an MIL issue. Found 2 codes PO300 and PO421. Inspected plugs and wires and found carbon track marks on number 2 wire. We replaced plugs and wires with OEM parts and found quite a few posts about bad converters in the arc...
October 26, 2004
1999 Chevrolet Tahoe 5.7L No Start, Misfire VIN: 3GNEC18R3X
P0300: Multiple Cylinder Misfire Detected. Hello!! Everybody. This is not a help request, just for somebody in the future. However. you can still leave the comments if you have any opinions. I had this Tahoe came in for leaking coolant from intake manifold gaskets. After the repair has done, it did ...
October 27, 2004
1999 Chevrolet Astro 4.3L Misfire, MIL Lamp on VIN: 1GCDM19W6X
P0300: Multiple Cylinder Misfire Detected. This van has multiple cylinder missfires just off idle and at cruise, under load the missfire is gone, what I have noticed is that the cam sensor in the distributor is reading -15 degrees at 1000 or 2000 rpm, there is no adjustment on the distributor, I have r...
October 28, 2004
1999 Mazda Miata 10th Anniversary 1.8L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: JMINB3539X
P0300: Random Misfire Detected. ... engine light on, ran rough, customer stated light was flashing at first. Road tested light on solid, ran ok. checked codes p0300 (random misfire), inspected #1 plug looked ok, wet tested ignition, ok (has been wet & rainy here), unable to duplicate pro...
October 28, 2004
2000 Chrysler Sebring LX 2.5L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 3C3EL55HOY
P0300: Multiple Cylinder Misfire Detected. Car came in last June with low fuel mileage complaint. Changed plugs & wires Everything ok Car is back. Starts and runs normally for about 30 seconds then stalls, has lack of power, Hesitation etc Customer states that car will run bad for about 10 min. a...
October 29, 2004