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P0300 Diagnostic Trouble Code Discussion for May 2009

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2003 Chevrolet Silverado 2500 HD 6.0L Misfire, MIL Lamp on VIN: 1FTSX21Y06
P0300: Multiple Engine Misfire Detected. First Post - New Shop :) Truck is not running on the Left Bank , Cylinder #6 not running on the right bank. Fuel trim on left side is at 50%, Oxygen sensor voltage is low. We replaced the O2 and reset trims. Suspected broken valve spring - removed valve cov...
May 01, 2009
1998 Chevrolet Tahoe LS 5.7L Misfire VIN: 1GNEK13R1W
P0300: Multiple Cylinder Misfire Detected. compress is low on #5cyl.about 130psi.
May 02, 2009
1996 GMC C1500 Sierra SL 4.3L MIL Lamp on VIN: 1GTEC14W5T
P0300: Multiple Cylinder Misfire Detected. Hello, This truck runs and drives great however it keeps throwing a PO300 on the misfire history counter it shows, #1 24000 misfires #2 5 #3 19 #4 1976 #5 12 #6 22 when excellerating it may show 1 or 2 misfires on #1 and #4 but on deacceleration it sh...
May 02, 2009
2001 Volkswagen Passat GLX 2.8L Misfire, MIL Lamp on VIN: WVWBH63B01
P0300: Random multiple cylinder misfire. This car is killing us, I believe it had compound problems, and we are chipping away at them, but this misfire is really puzzling, the new parts are listed above, also, the oil pressure is good(29 psi at idle and 55 psi at 2,000 rpm), fuel pressure within spec...
May 04, 2009
2008 Chevrolet Colorado LT 3.7L Misfire VIN: 1GCDT13E18
P0300: Random multiple missfire. Ok here we go. This wonderful vehicle is a SALVAGE vehicle bought at a used car dealer with no warranty as is. This thing was in a head on collision previously, bad enough to put the engine in the firewall about 4-5 inches. Anyway body shop hacked this thing u...
May 05, 2009
2002 Honda Accord EX 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1HGCG22562
P0300: Multiple Misfire Detected. ... first time. I did a tune up and scheduled maintenance service. Car returned 4 days later as a no start. Turns out it ran out of gas. Added 2 gallons of gas and it started right up. Customer opted for Timing Belt Service. Returned next day with bad misfirin...
May 05, 2009
2002 Volkswagen Passat GLX 2.8L Misfire, MIL Lamp on VIN: WVWRH63B52
P0300: random missfire. ok have checked all but cam chain timing on bank one this will be my next step . but if any body out there has any idea what is going on please help. also alldata says there should be a 9v ref. at both sensors is this true? i have 5v ref.
May 05, 2009
1996 Chevrolet Tahoe 5.7L Misfire VIN: 3GNEK18RXT
P0300: Multiple Cylinder Misfire Detected. I am out of ideas on this one. comes in with CEL & code listed. doesn't seem to run poorly. Misfire counter continually shows #3 misfire. I have confirmed the plug, wire, cap & rotor are all good(previously replace @ another shop). Customer states that...
May 06, 2009
2002 Honda Accord EX 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1HGCG22562
P0300: Multiple Misfire Detected. ... first time. I did a tune up and scheduled maintenance service. Car returned 4 days later as a no start. Turns out it ran out of gas. Added 2 gallons of gas and it started right up. Customer opted for Timing Belt Service. Returned next day with bad misfirin...
May 07, 2009
2001 Volkswagen Passat GLX 2.8L Misfire, MIL Lamp on VIN: WVWBH63B01
P0300: Random multiple cylinder misfire. This car is killing us, I believe it had compound problems, and we are chipping away at them, but this misfire is really puzzling, the new parts are listed above, also, the oil pressure is good(29 psi at idle and 55 psi at 2,000 rpm), fuel pressure within spec...
May 12, 2009
1996 Mazda 626 DX 2.0L Misfire, MIL Lamp on VIN: 1YVGE22C9T
P0300: Random Misfire Detected. ... times then on solid. But the funny thing is you couldn't feel any missfire what so ever. when vehicle first arrived at my shop i pulled a pending code and history code p0300 and p0304. the OTHER SHOP before their tune up p...
May 13, 2009
2005 Saturn Ion-2 2.2L Misfire, MIL Lamp on VIN: 1G8AJ52F25
P0300: Random Misfire Detected. vehicle has no spark on 2 and 3. replaced coil and module with no results. using longer spark plug wires to connect scope, we find no spark on #2 & #3. probing driver from ecu we see the same pattern for #1 & #4 white wire to be the same as #2& #3 ...
May 13, 2009
1998 Chevrolet C1500 Cheyenne 4.3L Surge, Misfire VIN: 1GCEC14W9W
P0300: Multiple Cylinder Misfire Detected. The customers complaint is that the truck will buck and jerk and feel like it wants to quite. On a test drive it only acted up once and it won't act up again. The cap and plugs are ok. The fuel pump and filter are ok. Does anyone have any ideas, Mike
May 14, 2009
2001 Chevrolet Astro 4.3L Misfire, MIL Lamp on VIN: 1GBDM19W01
P0300: Multiple Cylinder Misfire Detected. veh has missfire on 1 3 5 cylinders long term and short term fuel trim is normal.
May 14, 2009
2003 Chevrolet Silverado 2500 6.0L Misfire VIN: 1GCHK23UX3
P0300: Multiple Engine Misfire Detected. Hi Folks. This truck has light misfires on all cyl. tried all the listed repairs with no help. Had a local GM master tech suggest to pull the crank sensor and check for damage. None found. Did have heavy rust buildup on mounting serface, cleaned that and still...
May 14, 2009
2006 Honda Civic EX 1.8L Hesitation, Misfire, MIL Lamp on VIN: 2HGFG11896
P0300: Random Misfire Detected. good afternoon, this one is for the honda guys out there. we installed a used 7k mile long block from a 2007 modle car supplied to us by an aftermarket warranty company. (very clean engine) it was supplied with valve cover and oil pan only. we transfered all t...
May 14, 2009
1999 Lexus ES300 3.0L MIL Lamp on VIN: JT8BF28G1X
P0300: Multiple Cylinder Misfire Detected. Hi This lexus came in running fine and I cant dublicate the problem. The Customer says on a long drive the car will sometimes lose power and misfire on acceleration.There is misfire codes for cyl 1 3 5 and a code p1349 variable valve timing problem bank 1.I re...
May 14, 2009
1998 Chevrolet C1500 Cheyenne 4.3L Surge, Misfire VIN: 1GCEC14W9W
P0300: Multiple Cylinder Misfire Detected. The customers complaint is that the truck will buck and jerk and feel like it wants to quite. On a test drive it only acted up once and it won't act up again. The cap and plugs are ok. The fuel pump and filter are ok. Does anyone have any ideas, Mike
May 16, 2009
1996 Chevrolet K1500 Cheyenne 5.7L Misfire, MIL Lamp on VIN: 2GCEK19R9T
P0300: Multiple Cylinder Misfire Detected. engine will idle @ -2 cam retard, increase rpm and cam retard goes to 45 and sets code. scanner does not pick up and particular engine missfire. distributer shaft feels no play. ecm??? what other info can i give you?
May 18, 2009
2002 Toyota Sequoia SR5 4.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: A22S066804
P0300: Multiple Cylinder Misfire Detected. Need Toyota help on a 4.7 V8. This thing misfires on all the odd cylinders bank 1. Only does it during idle ,cruise is ok.Suspect a problem with variable valve timing?
May 18, 2009
1998 Chevrolet K1500 Cheyenne 5.7L Misfire, MIL Lamp on VIN: 2GCEK19R4W
P0300: Multiple Cylinder Misfire Detected. This truck is giving me a bit of trouble. It came in to the shop with a transmission problem. It sat for about 5 months (owner started it occassionally and let it run). Installed GM rebuilt transmission. Took it for a road test and after 10-15 miles SES light ...
May 19, 2009
2000 Toyota Celica GTS 1.8L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: JTDDY32T5Y
P0300: Multiple Cylinder Misfire Detected. car misses on all cylinders at 2200 rpm, goes away after 2500, has updated injectors per toyota tsb, no slack in timing chain; some wear on guides, fuel trim , lt-10%, st -1%, replaced maf meter (3.6), intermitant power loss
May 19, 2009
2002 Toyota Sequoia SR5 4.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: A22S066804
P0300: Multiple Cylinder Misfire Detected. Need Toyota help on a 4.7 V8. This thing misfires on all the odd cylinders bank 1. Only does it during idle ,cruise is ok.Suspect a problem with variable valve timing?
May 19, 2009
1998 Audi A6 Quattro 2.8L Misfire, MIL Lamp on VIN: WAUBA24B1W
P0300: random multiple missfire. ... A6 AHA motor with missfire codes p0300 and p0305. Spark plugs had 100k on them so we replaced and checked compression 6x175 lbs. Same issue, had wires and coil in stock so swapped them in to see, same issue. Smoked intak...
May 20, 2009
2002 Chevrolet Express 2500 5.7L Misfire VIN: 1GCGG25RX2
P0300: Multiple Cylinder Misfire Detected. ... since new. Dealer played with it to no avail until 44,000 miles and customer gave up on them. We found bad distributor gear and replaced, having no issues for 9000 miles. Came [...] with what customer saw as same problem. Bad mass air flow where cleaning w...
May 20, 2009
1999 Buick Regal GS 3.8L power loss on accel. VIN: 2G4WF5219X
P0300: Engine Misfire Detected. Hello all; I have this supercharged Regal that came in with a flashing Mil, and an obvious misfire. Found several spark plugs with carbon tracking down the sides. Replaced plugs and wires (ac delco irridum). Now idels and drives great until you try a harder th...
May 21, 2009
2002 Chevrolet Suburban 1500 LS 5.3L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 3GNEC16Z82
P0300: Multiple Cylinder Misfire Detected. Any help appreciated. My technician is stumped.
May 21, 2009
2004 Chrysler Sebring Limited 2.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1C3EL65RX4
P0300: Multiple Cylinder Misfire Detected. koeo check engine light flashes ten time exactly, long and short term trims on bank 1 only both climbed down to -30. initial startup to 30 seconds runs fine, after that fuel trims drop and misfires on all bank 1 cylinders begin to show up. bank 2 shows fine, n...
May 21, 2009
1998 Audi A4 2.8L Poor Idle Quality, MIL Lamp on VIN: WAUED28D7W
P0300: Random missfire. ... were extracted we found P0300,P0302,P0304,P0305,and P0306.Codes were cleared and car was test driven. Cel began to flash then remained on steady. Codes were again extracted with P0300,P0304,...
May 22, 2009
1999 BMW 323i 2.5L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: WBAAM3339X
P0300: randmon miss. this car was work on by another car lot , they installed new intake and plugs , the car has over 11 codes at first the ones came back i show,the car has a very rough and bad idle at cold , once warmed up runs better once in a while it will miss fire , i think ...
May 26, 2009
2002 Ford Ranger Edge 3.0L Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on, NO POWER. VIN: 1FTYR44V52
P0300: random misfire. about 10% of improvement was noticed after repair. the main concern is no power on acceleration. crank and cam signals are ok, no glitches on scope when driving. cam sensor synchronizer is in correct position. no exhaust backprssure exists, removed twc and pro...
May 26, 2009
2000 Volkswagen Jetta GLS 2.0L Poor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp on VIN: 3VWSC29M7Y
P0300: Misfire. We checked the MAF sensor and the voltage was close; however, it was a little high at idle.
May 27, 2009
1999 Infiniti QX4 3.3L Poor Idle Quality, Surge, Misfire, MIL Lamp on VIN: JNRAR0ZY9X
P0300: Multiple Misfire Detected. I have this nightmare of a QX4 that has a rough idle issure with a random misfire code. When I first looked at the car I smoke tested it for vacum leaks and found the inlet boot at the t-body to have a large crack in it. Replaced it with a new inlet boot think...
May 28, 2009
2006 Chevrolet Express 2500 4.8L Hesitation, Misfire, MIL Lamp on VIN: 1GCGG29V16
P0300: Multiple Cylinder Misfire Detected. ... vehicle came in orignally with p0200 and p0300 codes and runs rough.# 7 cly show sever missfire in misfire frame around 2000 counts and rest of the clys between 4 and 26 counts.seems to get worse when after reaching operating temp. we check the wiring harn...
May 29, 2009
2006 Chevrolet Trailblazer LT 4.2L Poor Idle Quality, Cuts out, MIL Lamp on, no throttle control VIN: 1GNET16S76
P0300: Multiple Engine Misfire Detected. This truck came in No Start no crank, with no fuel pressure Had good power and ground at fuel pump so I replaced the pump, now has fuel. Also had a blown main fuse 180 amp when it came in. After repairs it started and ran but after about 2 min's it started idl...
May 29, 2009
2006 Chevrolet Express 2500 4.8L Hesitation, Misfire, MIL Lamp on VIN: 1GCGG29V16
P0300: Multiple Cylinder Misfire Detected. ... vehicle came in orignally with p0200 and p0300 codes and runs rough.# 7 cly show sever missfire in misfire frame around 2000 counts and rest of the clys between 4 and 26 counts.seems to get worse when after reaching operating temp. we check the wiring harn...
May 30, 2009
2002 Honda Civic EX 1.7L Misfire, MIL Lamp on VIN: 1HGEM219X2
P0300: misfire all cylinders. ok everyone. this civic is beating me up! need advise.. i got this 02 civic ex 5sp. only got 59k on it. intermittent misfire. only happens when engine is cold. found spark plugs worn, replaced w/ genuine honda parts. thought o2s1 was slow. replaced w/ denso re...
May 30, 2009