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P0300 Diagnostic Trouble Code Discussion for July 2004

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
1996 Dodge Ram 1500 Truck 5.9L Hesitation, Cuts out VIN: 1B7HC13Z6T
P0300: Multiple Cylinder Misfire Detected. Hello all This truck will not accelerate- acts like it is governed. Will bog down and not rev up on acceleration down freeway. If you accelerate VERY gradually it will get to cruising speed. Customer put a new fuel pump assembly in before bringing to our shop....
July 01, 2004
1996 Saab 9000 CSE Turbo 2.3L MIL Lamp on VIN: YS3CF68M9T
P0300: random misfire. ... a P0441 and P0300 causing the check engine light to come on. I'm not getting any misfire counts on the Tech 2, the cassette and plugs are new. Have checked all the hoses and connections involved with the evap system. This car doesn't support evap. system t...
July 02, 2004
1999 Pontiac Grand Prix SE 3.8L MIL Lamp on VIN: 1G2WJ52K4X
P0300: Multiple Engine Misfire Detected. This car has a P0300 code. No problems are felt from the seat or looking at the motor. The ignition module has been replaced. With the Tech 2 and using the Misfire graphic cyl 3 & 6 are causing the problem. I did a power balance and all 6 dropped roughly t...
July 03, 2004
2001 Chevrolet Venture LS 3.4L Misfire VIN: 1GNDUO371D
P0300: Multiple Cylinder Misfire Detected. ... all the basics, code scan and it showed P0300, misfire. traced it to the number two cylinder. comp test showed OK. tested plugs and wires, they showed OK. I even replaced with new to make sure. Coils put out good voltage. Injector ballance test showed all ...
July 05, 2004
1999 Chevrolet Tahoe LS 5.7L No Start, Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1GNEK13R9X
P0300: Multiple Cylinder Misfire Detected. ... help. This one has us stumped. Customer complaint was hard start, when it did start it ran rough until operating temp was reached. Check engine light came on, the only code is P0300, random miss fire. We had the truck over night and checked it 1st thing th...
July 07, 2004
1996 Chevrolet Camaro Z28 5.7L MIL Lamp on VIN: 2G1FP22P0T
P0300: Multiple Engine Misfire Detected. ... and has some high performance upgrades. these codes come sometimes after start up, sometimes in the shop, and sometimes you need to drive the car(not very far, usually not even out of the shop) tested all circuits and no problems are found the main codes t...
July 08, 2004
1999 Chevrolet Tahoe LS 5.7L No Start, Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1GNEK13R9X
P0300: Multiple Cylinder Misfire Detected. ... help. This one has us stumped. Customer complaint was hard start, when it did start it ran rough until operating temp was reached. Check engine light came on, the only code is P0300, random miss fire. We had the truck over night and checked it 1st thing th...
July 08, 2004
1996 Chevrolet C1500 Cheyenne 4.3L Misfire, MIL Lamp on VIN: 1GCEC14W9T
P0300: Multiple Cylinder Misfire Detected. intermitently runs like multiple misfires. shakes shifter several inches. code p0340 will set regularly even when engine appears to be running smoothly.
July 10, 2004
1996 Oldsmobile Cutlass Supreme 3.1L Misfire
P0300: Multiple Engine Misfire Detected. this car will intermitently miss and mil will flash when ever it feels like it. i have checked the crank sensors the cam sens. the ign. module the coil packs. in history codes no.6cyl has missed 63000 times somtimes others have missed but only a few and not al...
July 12, 2004
1999 Pontiac Grand Prix SE 3.8L MIL Lamp on VIN: 1G2WJ52K4X
P0300: Multiple Engine Misfire Detected. This car has a P0300 code. No problems are felt from the seat or looking at the motor. The ignition module has been replaced. With the Tech 2 and using the Misfire graphic cyl 3 & 6 are causing the problem. I did a power balance and all 6 dropped roughly t...
July 13, 2004
2000 GMC Sierra 1500 SL 4.8L Misfire VIN: 2GTEK19V9Y
P0300: Multiple Cylinder Misfire Detected. Hello everyone. Thanks for taking the time to read this. This truck developed a severe missfire one afternoon. When checked found no's 3, 5 and 7 cylinder with very low compression, (30 psi). Cylinder leakage test blows air into crankcase. Looking into cylinde...
July 16, 2004
1999 Saturn SL2 1.9L Misfire, MIL Lamp on VIN: 1G8ZJ5270X
P0300: Random Misfire Detected. Hello Everyone: I truly hope that one of my techs has helped someone in the past with a truly baffling problem!! Because, this Saturn is going to send me to Mars, Venus, and back!!! Like an idiot, I took on a SIMPLE engine swap from a local used car dealer o...
July 20, 2004
1999 Saturn SL2 1.9L Misfire, MIL Lamp on VIN: 1G8ZJ5270X
P0300: Random Misfire Detected. Hello Everyone: I truly hope that one of my techs has helped someone in the past with a truly baffling problem!! Because, this Saturn is going to send me to Mars, Venus, and back!!! Like an idiot, I took on a SIMPLE engine swap from a local used car dealer o...
July 21, 2004
1998 Toyota RAV4 2.0L Surge VIN: JT3GP10V8V
P0300: Multiple Cylinder Misfire Detected. at idle and up to 2700 (roughly) all is fine above that rpm engine bucks and surges. ignition scope shows dwell change. crank sensor at idle is about 5 volts looks good with identifier notch, at misfire rpm peak to peak voltage is 12.6 and still looks picture ...
July 21, 2004
2002 Chevrolet Avalanche 1500 5.3L Poor Idle Quality, Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 3GNEK13T42
P0300: Multiple Cylinder Misfire Detected. Hello GM techs . This 6/01 Chevy Avalanche,{ made in Mexico model} has a strong misfire that develops after at least 9 miles of driving . Sometimes the problem carries over and persists when cold started . The misfires are on all cylinders and are as follows f...
July 22, 2004
1997 Cadillac Catera 3.0L Misfire VIN: W06VR54R1V
P0300: Multiple Cylinder Misfire Detected. heys guys doing all the work myself trying to save time and money...hope cadi tecks can help or anyone with cadi exp... car has misfire interm.. and i cant see any misfiresoccurs intermittly..plugs wires look ok but i suspect coil pack.. any one come across th...
July 23, 2004
1998 Porsche 911 Carrera 3.6L Poor Idle Quality, MIL Lamp on VIN: WP0CA2993W
P0300: Misfire Random. Vehicle appears to run fine with the exception or a poor idle, 13" vac @ idle I suspect is due to a commanded ignition timing amount of 3 degrees. Vehicle runs good and appears to have plenty of power. When the MIL comes on and sets multiple cylinder misfi...
July 26, 2004
1997 Toyota 4Runner SR5 3.4L MIL Lamp on VIN: JT3HN86R4V
P0300: Multiple Cylinder Misfire Detected. the check engine lite will come on and stay on for a day or two then go off. the customer does not complain of a miss in the engine just the light coming on and off.
July 28, 2004
1997 Infiniti QX4 3.3L Misfire, MIL Lamp on VIN: JNRAR05YXV
P0300: Multiple Misfire Detected. ... no signs of misfiring. However the MIL light flashes and sets the P0300 code. The engine has had a complete tune up and the timing belt has been replaced recently. You could put a coin on its edge on top of the engine and it would not fall over. Was there ...
July 29, 2004
1998 Cadillac DeVille 4.6L Misfire, MIL Lamp on VIN: 1G6KD54Y2W
P0300: Engine Misfire Detected. missfire @ idle with a/c on.all cyls affected.this at times is intermitent.what am i missing.please help.
July 30, 2004
1997 Chrysler Town & Country (Van) LX 3.8L Stall, Misfire, MIL Lamp on VIN: 1C4GP54L1V
P0300: Random Cylinder Misfire. OK... Thought this one would be easy, hell 3.8s are pattern fail children arent they? Towed in, no RPM signal. Crank sensor open, zero signal. Install new crank sensor, fires up and runs great. Customer pickes up, drives away, gets towed back in an hour later....
July 30, 2004
2004 GMC Savana 2500 6.0L Misfire VIN: 1GTGG25U44
P0300: Multiple Cylinder Misfire Detected. We are having a problem with not only this vehicle, but two more 2004 GMC Savana's in our fleet. The driver comes into shop with check engine light flashing and say's it is running rough. We plug Modis in to get code's and it's PO300 Random misfire. Go to Misf...
July 30, 2004
1996 Mercury Grand Marquis GS 4.6L Misfire VIN: 2MELM74W5T
P0300: random misfire. ... codes (no codes or p1000 actually). Test drove vehicle and noticed an intermittent misfire. Checked codes and found a random misfire, I drove a little more till a p0301 and a p0305 came up then checked those two plugs and...
July 30, 2004