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P0300 Diagnostic Trouble Code Discussion for December 2007

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
1998 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD54YWU
P0300: Engine Misfire Detected. ... gaskets and seal bottom end oil leaks. Sent engine to machine shop to have head gaskets install with new inserts. Installed engine machine shop had timing off car would not start. Timed engine, car runs fine, no misses. Deliver car to customer two days lat...
December 03, 2007
1999 Chevrolet Tahoe LS 5.7L Misfire, Poor Fuel Economy VIN: 1GNEK13R3X
P0300: Multiple Cylinder Misfire Detected. This Tahoe misses at idle steady at an idle on number 7 cylinder. compression great, spark great and took upper plenium off and poppets and injectors great. Now only diff is at idle oil pressure light came on and pressure at idle is 1.5psi. at 1000 rpm up to 4...
December 03, 2007
2003 Kia Sedona EX 3.5L Misfire, MIL Lamp on VIN: KNDUP13123
P0300: Multiple Misfire Detected. timming belt replaced as maintance at another shop in our chain. they said timming was on its marks twice!! we recived the van took the timming covers off it was out of time on the right (back) cams, so we aligned the timming marks and spun the engine over two...
December 03, 2007
2003 Mitsubishi Lancer Evolution 2.0L Misfire VIN: JA3AH86F93
P0300: Random Misfire Detected. ... inherited this 03 Mitsu Lancer Evolution after several shops tried. It has a reoccuring P0300(random misfire). I AM AWARE of the 5 speed trans update. I found excessive oil from the K&N Filter all over the MAF sensor(I cleaned it up). I smoked it for a...
December 03, 2007
2004 Volkswagen Passat GLX 4 Motion 2.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WVWYH63BX4
P0300: random misfire. car came in with 2 misfire codes. performed tune up with plugs, wires and replaced coils with module. still not fixed. fuel pressure is over spec by 1.2 bars. swapped plugs,wires and injectors from cyl to cyl no change. my next step is to manually regulate fue...
December 03, 2007
1996 GMC Jimmy 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GKDT13W8T
P0300: Multiple Cylinder Misfire Detected. Replaced cap,rotor,plugs and wires vehicle now will start but runs VERY BAD rechecked cap and wire routing all good engine will run but missing bad checked engine vacumme only 5inches vac not good tried disconnecting cat still no good im thinking possible plug...
December 05, 2007
1998 GMC Jimmy Envoy 4.3L MIL Lamp on VIN: 1GKDT13W6W
P0300: Multiple Cylinder Misfire Detected. ... vehicle. Repaired misfire by installing "revised" injector assy. Still have occ. MIL and p0300 which is keeping vehicle inspection sticker from happenning. Have tried multiple times to perform crankshaft variation relearn w/Tech2 and will not learn...
December 05, 2007
2003 Mitsubishi Lancer Evolution 2.0L Misfire VIN: JA3AH86F93
P0300: Random Misfire Detected. ... inherited this 03 Mitsu Lancer Evolution after several shops tried. It has a reoccuring P0300(random misfire). I AM AWARE of the 5 speed trans update. I found excessive oil from the K&N Filter all over the MAF sensor(I cleaned it up). I smoked it for a...
December 05, 2007
2005 Ford Taurus SE 3.0L Poor Idle Quality, Poor Fuel Economy VIN: 1FAFP53U25
P0300: random misfie. runs rough with high fueltrims at all times on bank one only, i also hear a girgling or popping noise coming from the air filet intake at idle. need help guys...thinking stuck or sticking valves or maybe inj problems?
December 06, 2007
1998 Cadillac Seville SLS 4.6L No Start VIN: 1G6KS54Y1W
P0300: Engine Misfire Detected. I am having a problem with this car starting,It will start for a second but shut down.It has no comm on bcm 1,2, and 3 says ingintion voltage is at 24 volts and ingition is inactive.It aslo says it has no fuel and the customer just filled it up and the gauge i...
December 07, 2007
2004 Chevrolet Tahoe LS 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNEC13T64
P0300: Multiple Cylinder Misfire Detected. ... thank you in advance. this truck came from other shops,including the local dealer. I have p0300 dtc, modis miss fire monitor shows #7 and#2 cylinder miss fire.swiched spark plug, plug wire,coil, fuel injector to another cylinder. miss fire s stayed the sam...
December 07, 2007
2004 Chevrolet Tahoe LS 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNEC13T64
P0300: Multiple Cylinder Misfire Detected. ... thank you in advance. this truck came from other shops,including the local dealer. I have p0300 dtc, modis miss fire monitor shows #7 and#2 cylinder miss fire.swiched spark plug, plug wire,coil, fuel injector to another cylinder. miss fire s stayed the sam...
December 11, 2007
2000 Honda Accord EX 3.0L Poor Idle Quality, Hesitation, Cuts out, Misfire VIN: 1HGCG1652Y
P0300: Multiple Misfire Detected. This vehicle had a complaint of starting and stalling intermittently customer stated that it also ran poorly for a short period of time.Once a couple of minutes have past symptom completely goes away.Scanned Computer found codes for misfires P0301-P0305 stored...
December 11, 2007
2005 Chrysler PT Cruiser Touring 2.4L Misfire, MIL Lamp on VIN: 3C4FY58B75
P0300: Multiple Cylinder Misfire Detected. Hello all, I have this 2005 PT Cruiser whick is running rough and no acceleration. I scanned vehicle and found above codes. Suggested to customer to replace spark plugs and wires and run a compression check while doing this. After plug and wire replacement no ...
December 12, 2007
1996 Mitsubishi Mirage S 1.5L Misfire, MIL Lamp on VIN: JA3AA11A0T
P0300: Random Misfire Detected. ... missfire P0300. seems to be worse under load, replaced all ignition components with oe parts, valve lash adjustment (.008-intake, .010-exhaust hot). comp test showed all cylinders at approx 160 psi. vehicle does have carbon buildup, motor vac system with n...
December 12, 2007
1997 Chevrolet Cavalier 2.2L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G1JC5244V
P0300: Multiple Engine Misfire Detected. ... no-start pulled plugs found them fouled with fuel and worn replaced plugs got vehicle to start but ran very bad and no power watched data on mentor found timing adv all over the place pulled front cover found tensioner in pieces and timing two teeth off re...
December 13, 2007
2003 Chevrolet Cavalier 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G1JC12F93
P0300: Multiple Engine Misfire Detected. misfire at idle rpm just above idle skip goes away
December 13, 2007
2005 Chrysler PT Cruiser Touring 2.4L Misfire, MIL Lamp on VIN: 3C4FY58B75
P0300: Multiple Cylinder Misfire Detected. Hello all, I have this 2005 PT Cruiser whick is running rough and no acceleration. I scanned vehicle and found above codes. Suggested to customer to replace spark plugs and wires and run a compression check while doing this. After plug and wire replacement no ...
December 13, 2007
2000 Ford Crown Victoria 4.6L Misfire VIN: 2FAFP73W3Y
P0300: random misfire. i got this crown vic in my shop that will misfire almost every time under light acceleration. it only misfires while driving if driven like grandma, any real acceleration and the vehicle runs fine. it also pings at times which seems to come and go. we replaced...
December 13, 2007
1996 Mitsubishi Mirage S 1.5L Misfire, MIL Lamp on VIN: JA3AA11A0T
P0300: Random Misfire Detected. ... missfire P0300. seems to be worse under load, replaced all ignition components with oe parts, valve lash adjustment (.008-intake, .010-exhaust hot). comp test showed all cylinders at approx 160 psi. vehicle does have carbon buildup, motor vac system with n...
December 13, 2007
1997 Chevrolet Cavalier 2.2L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G1JC5244V
P0300: Multiple Engine Misfire Detected. ... no-start pulled plugs found them fouled with fuel and worn replaced plugs got vehicle to start but ran very bad and no power watched data on mentor found timing adv all over the place pulled front cover found tensioner in pieces and timing two teeth off re...
December 14, 2007
2000 Ford Crown Victoria 4.6L Misfire VIN: 2FAFP73W3Y
P0300: random misfire. i got this crown vic in my shop that will misfire almost every time under light acceleration. it only misfires while driving if driven like grandma, any real acceleration and the vehicle runs fine. it also pings at times which seems to come and go. we replaced...
December 14, 2007
1999 Saab 9-5 SE 3.0L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: YS3EF48Z5X
P0300: mis firing code. I have this 99/9-5 V-6 Auto. The misfiring code 0300 keeps coming up on my Tech 2. I have replaced new NGK plugs, 2 IDMs, checked for air leaks, Evaps leaks, fuel pressure, replaced MAF sensor, crank sensor,Timing was on the money, Engine Compression is good. ...
December 16, 2007
1999 Saab 9-5 SE 3.0L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: YS3EF48Z5X
P0300: mis firing code. I have this 99/9-5 V-6 Auto. The misfiring code 0300 keeps coming up on my Tech 2. I have replaced new NGK plugs, 2 IDMs, checked for air leaks, Evaps leaks, fuel pressure, replaced MAF sensor, crank sensor,Timing was on the money, Engine Compression is good. ...
December 18, 2007
2001 Chevrolet Malibu 3.1L Misfire, MIL Lamp on VIN: 1G1ND52J81
P0300: Multiple Cylinder Misfire Detected. Got a strange one here guys-on decel this Malibu will show misfires on all cylinders.You would never know there was a problem but it keeps on tripping the MIL.Fuel trim numbers look good as well as all other data so we went ahead and tuned it up but it didnt c...
December 19, 2007
2002 Chevrolet Impala 3.4L Misfire VIN: 2G1WF55E82
P0300: Multiple Cylinder Misfire Detected. car came to us with a miss on cylinders 1 and 2..the miss only occures at a snap accerleation on throttle, then it will miss continuously until the car is shut off for a couple of minutes. restart engine and no missfire detected...if you bring rpm up slow and ...
December 20, 2007
2003 Dodge Neon SXT 2.0L No Start, Poor Idle Quality VIN: 1B3ES56C73
P0300: Multiple Cylinder Misfire Detected. Came in no start, cranks. It was flooded. Dried cyl's installed new plugs, disconnected all injectors, started vehicle on propane. Engine started, plugged in all injectors. Noticed intake ducting would collaps. Installed new ducting. Was starting, would run ro...
December 20, 2007
2001 Pontiac Grand Am SE 2.4L Misfire VIN: 1G2NF52T71
P0300: Multiple Cylinder Misfire Detected. Hello all, I'm looking for some info on this Grand Am. We've replaced the plastic coil cover housing 4 times in the last year or so. The cover itself seems to short internally and create a misfire/no-start condition. The past two times it has been cylinders 1 ...
December 20, 2007
1999 Chevrolet Astro 4.3L Hesitation, Stall, Misfire, MIL Lamp on VIN: 1GNDM19WOX
P0300: Multiple Cylinder Misfire Detected. see previous
December 21, 2007
2003 Ford Focus ZX3 2.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3FAFP31343
P0300: engine misfire. the car is missing at idle also when you acelerate it will miss some of the time. it seems to start missing when the rpm goes back down under a grand but it will not do this all of the time it also started a pending code p2195 which is the 02 sensor which is d...
December 23, 2007
1997 Pontiac Grand Am SE 3.1L Poor Idle Quality, Misfire, Poor Fuel Economy
P0300: Multiple Cylinder Misfire Detected. Hi everybody this is my personal car I was chasing this problem for a long time, there is no repair manual that I did not try or advice that I did not use. This car is in top shape as you can tell by compression readings. No leaks all vacuum lines etc are tigh...
December 25, 2007
1996 Chevrolet Astro 4.3L Misfire VIN: 1GNDM19W6T
P0300: Multiple Cylinder Misfire Detected. Hey guys i have a 96 chevy astro with 177402 miles on it and it appears to be in good condiction. the customer had a major tune up back in 8/8/07 by a shop that is now out of business and asked if i would look at it. the van now has an engine miss. I inspected...
December 26, 2007
2003 Chevrolet Silverado 1500 5.3L Misfire, MIL Lamp on VIN: 2GCEK19T83
P0300: Multiple Cylinder Misfire Detected. check for spark ok . check for external vaccum leaks, long fuel trim 50% bank one . 25% short fuel trim , ran pid data bank 2 within perimeters. have random misfire po300 perimeter count flags 1,3,5,7 .
December 28, 2007
1997 Chevrolet Cavalier LS 2.2L Misfire VIN: 1G1JF5242V
P0300: Multiple Engine Misfire Detected. ok guys this car runs really rough (like its just running on 2 cylinders) and misfires on every cylinder. I will not accerelate at all. It smells rich and acts like it flooding. It also will not start with the air cleaner off and it seems like all 2.2 I've wor...
December 29, 2007
2001 Chevrolet Express 3500 5.7L No Start, Hesitation, Cuts out, Misfire VIN: 1GBJG31R21
P0300: Multiple Cylinder Misfire Detected. hard time cold starting or at all, when running c/e light flashed in mid throttle snap test. try to figure why my high range power is cut out. slow consistant t/p is the only way to get themotor to rev.high and not missfire. no history codes and the light does...
December 29, 2007
1997 Chevrolet C1500 4.3L Misfire VIN: 1GCEC14W8W
P0300: Multiple Cylinder Misfire Detected. Only cylinder #1 is showing any misfires. we did a motorvac, no difference. Current ramp on #1 injector shows max amperage @1.03 amps. smooth wave form and a little flat spot 991us into the pattern. total duration 3.4ms and time at max amps abt 2.0ms. tried to...
December 31, 2007
1998 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD54YWU
P0300: Engine Misfire Detected. ... gaskets and seal bottom end oil leaks. Sent engine to machine shop to have head gaskets install with new inserts. Installed engine machine shop had timing off car would not start. Timed engine, car runs fine, no misses. Deliver car to customer two days lat...
December 03, 2007
1999 Chevrolet Tahoe LS 5.7L Misfire, Poor Fuel Economy VIN: 1GNEK13R3X
P0300: Multiple Cylinder Misfire Detected. This Tahoe misses at idle steady at an idle on number 7 cylinder. compression great, spark great and took upper plenium off and poppets and injectors great. Now only diff is at idle oil pressure light came on and pressure at idle is 1.5psi. at 1000 rpm up to 4...
December 03, 2007
2003 Kia Sedona EX 3.5L Misfire, MIL Lamp on VIN: KNDUP13123
P0300: Multiple Misfire Detected. timming belt replaced as maintance at another shop in our chain. they said timming was on its marks twice!! we recived the van took the timming covers off it was out of time on the right (back) cams, so we aligned the timming marks and spun the engine over two...
December 03, 2007
2003 Mitsubishi Lancer Evolution 2.0L Misfire VIN: JA3AH86F93
P0300: Random Misfire Detected. ... inherited this 03 Mitsu Lancer Evolution after several shops tried. It has a reoccuring P0300(random misfire). I AM AWARE of the 5 speed trans update. I found excessive oil from the K&N Filter all over the MAF sensor(I cleaned it up). I smoked it for a...
December 03, 2007
2004 Volkswagen Passat GLX 4 Motion 2.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WVWYH63BX4
P0300: random misfire. car came in with 2 misfire codes. performed tune up with plugs, wires and replaced coils with module. still not fixed. fuel pressure is over spec by 1.2 bars. swapped plugs,wires and injectors from cyl to cyl no change. my next step is to manually regulate fue...
December 03, 2007
1996 GMC Jimmy 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GKDT13W8T
P0300: Multiple Cylinder Misfire Detected. Replaced cap,rotor,plugs and wires vehicle now will start but runs VERY BAD rechecked cap and wire routing all good engine will run but missing bad checked engine vacumme only 5inches vac not good tried disconnecting cat still no good im thinking possible plug...
December 05, 2007
1998 GMC Jimmy Envoy 4.3L MIL Lamp on VIN: 1GKDT13W6W
P0300: Multiple Cylinder Misfire Detected. ... vehicle. Repaired misfire by installing "revised" injector assy. Still have occ. MIL and p0300 which is keeping vehicle inspection sticker from happenning. Have tried multiple times to perform crankshaft variation relearn w/Tech2 and will not learn...
December 05, 2007
2003 Mitsubishi Lancer Evolution 2.0L Misfire VIN: JA3AH86F93
P0300: Random Misfire Detected. ... inherited this 03 Mitsu Lancer Evolution after several shops tried. It has a reoccuring P0300(random misfire). I AM AWARE of the 5 speed trans update. I found excessive oil from the K&N Filter all over the MAF sensor(I cleaned it up). I smoked it for a...
December 05, 2007
2005 Ford Taurus SE 3.0L Poor Idle Quality, Poor Fuel Economy VIN: 1FAFP53U25
P0300: random misfie. runs rough with high fueltrims at all times on bank one only, i also hear a girgling or popping noise coming from the air filet intake at idle. need help guys...thinking stuck or sticking valves or maybe inj problems?
December 06, 2007
1998 Cadillac Seville SLS 4.6L No Start VIN: 1G6KS54Y1W
P0300: Engine Misfire Detected. I am having a problem with this car starting,It will start for a second but shut down.It has no comm on bcm 1,2, and 3 says ingintion voltage is at 24 volts and ingition is inactive.It aslo says it has no fuel and the customer just filled it up and the gauge i...
December 07, 2007
2004 Chevrolet Tahoe LS 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNEC13T64
P0300: Multiple Cylinder Misfire Detected. ... thank you in advance. this truck came from other shops,including the local dealer. I have p0300 dtc, modis miss fire monitor shows #7 and#2 cylinder miss fire.swiched spark plug, plug wire,coil, fuel injector to another cylinder. miss fire s stayed the sam...
December 07, 2007
2004 Chevrolet Tahoe LS 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNEC13T64
P0300: Multiple Cylinder Misfire Detected. ... thank you in advance. this truck came from other shops,including the local dealer. I have p0300 dtc, modis miss fire monitor shows #7 and#2 cylinder miss fire.swiched spark plug, plug wire,coil, fuel injector to another cylinder. miss fire s stayed the sam...
December 11, 2007
2000 Honda Accord EX 3.0L Poor Idle Quality, Hesitation, Cuts out, Misfire VIN: 1HGCG1652Y
P0300: Multiple Misfire Detected. This vehicle had a complaint of starting and stalling intermittently customer stated that it also ran poorly for a short period of time.Once a couple of minutes have past symptom completely goes away.Scanned Computer found codes for misfires P0301-P0305 stored...
December 11, 2007
2005 Chrysler PT Cruiser Touring 2.4L Misfire, MIL Lamp on VIN: 3C4FY58B75
P0300: Multiple Cylinder Misfire Detected. Hello all, I have this 2005 PT Cruiser whick is running rough and no acceleration. I scanned vehicle and found above codes. Suggested to customer to replace spark plugs and wires and run a compression check while doing this. After plug and wire replacement no ...
December 12, 2007
1996 Mitsubishi Mirage S 1.5L Misfire, MIL Lamp on VIN: JA3AA11A0T
P0300: Random Misfire Detected. ... missfire P0300. seems to be worse under load, replaced all ignition components with oe parts, valve lash adjustment (.008-intake, .010-exhaust hot). comp test showed all cylinders at approx 160 psi. vehicle does have carbon buildup, motor vac system with n...
December 12, 2007
1997 Chevrolet Cavalier 2.2L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G1JC5244V
P0300: Multiple Engine Misfire Detected. ... no-start pulled plugs found them fouled with fuel and worn replaced plugs got vehicle to start but ran very bad and no power watched data on mentor found timing adv all over the place pulled front cover found tensioner in pieces and timing two teeth off re...
December 13, 2007
2003 Chevrolet Cavalier 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G1JC12F93
P0300: Multiple Engine Misfire Detected. misfire at idle rpm just above idle skip goes away
December 13, 2007
2005 Chrysler PT Cruiser Touring 2.4L Misfire, MIL Lamp on VIN: 3C4FY58B75
P0300: Multiple Cylinder Misfire Detected. Hello all, I have this 2005 PT Cruiser whick is running rough and no acceleration. I scanned vehicle and found above codes. Suggested to customer to replace spark plugs and wires and run a compression check while doing this. After plug and wire replacement no ...
December 13, 2007
2000 Ford Crown Victoria 4.6L Misfire VIN: 2FAFP73W3Y
P0300: random misfire. i got this crown vic in my shop that will misfire almost every time under light acceleration. it only misfires while driving if driven like grandma, any real acceleration and the vehicle runs fine. it also pings at times which seems to come and go. we replaced...
December 13, 2007
1996 Mitsubishi Mirage S 1.5L Misfire, MIL Lamp on VIN: JA3AA11A0T
P0300: Random Misfire Detected. ... missfire P0300. seems to be worse under load, replaced all ignition components with oe parts, valve lash adjustment (.008-intake, .010-exhaust hot). comp test showed all cylinders at approx 160 psi. vehicle does have carbon buildup, motor vac system with n...
December 13, 2007
1997 Chevrolet Cavalier 2.2L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G1JC5244V
P0300: Multiple Engine Misfire Detected. ... no-start pulled plugs found them fouled with fuel and worn replaced plugs got vehicle to start but ran very bad and no power watched data on mentor found timing adv all over the place pulled front cover found tensioner in pieces and timing two teeth off re...
December 14, 2007
2000 Ford Crown Victoria 4.6L Misfire VIN: 2FAFP73W3Y
P0300: random misfire. i got this crown vic in my shop that will misfire almost every time under light acceleration. it only misfires while driving if driven like grandma, any real acceleration and the vehicle runs fine. it also pings at times which seems to come and go. we replaced...
December 14, 2007
1999 Saab 9-5 SE 3.0L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: YS3EF48Z5X
P0300: mis firing code. I have this 99/9-5 V-6 Auto. The misfiring code 0300 keeps coming up on my Tech 2. I have replaced new NGK plugs, 2 IDMs, checked for air leaks, Evaps leaks, fuel pressure, replaced MAF sensor, crank sensor,Timing was on the money, Engine Compression is good. ...
December 16, 2007
1999 Saab 9-5 SE 3.0L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: YS3EF48Z5X
P0300: mis firing code. I have this 99/9-5 V-6 Auto. The misfiring code 0300 keeps coming up on my Tech 2. I have replaced new NGK plugs, 2 IDMs, checked for air leaks, Evaps leaks, fuel pressure, replaced MAF sensor, crank sensor,Timing was on the money, Engine Compression is good. ...
December 18, 2007
2001 Chevrolet Malibu 3.1L Misfire, MIL Lamp on VIN: 1G1ND52J81
P0300: Multiple Cylinder Misfire Detected. Got a strange one here guys-on decel this Malibu will show misfires on all cylinders.You would never know there was a problem but it keeps on tripping the MIL.Fuel trim numbers look good as well as all other data so we went ahead and tuned it up but it didnt c...
December 19, 2007
2002 Chevrolet Impala 3.4L Misfire VIN: 2G1WF55E82
P0300: Multiple Cylinder Misfire Detected. car came to us with a miss on cylinders 1 and 2..the miss only occures at a snap accerleation on throttle, then it will miss continuously until the car is shut off for a couple of minutes. restart engine and no missfire detected...if you bring rpm up slow and ...
December 20, 2007
2003 Dodge Neon SXT 2.0L No Start, Poor Idle Quality VIN: 1B3ES56C73
P0300: Multiple Cylinder Misfire Detected. Came in no start, cranks. It was flooded. Dried cyl's installed new plugs, disconnected all injectors, started vehicle on propane. Engine started, plugged in all injectors. Noticed intake ducting would collaps. Installed new ducting. Was starting, would run ro...
December 20, 2007
2001 Pontiac Grand Am SE 2.4L Misfire VIN: 1G2NF52T71
P0300: Multiple Cylinder Misfire Detected. Hello all, I'm looking for some info on this Grand Am. We've replaced the plastic coil cover housing 4 times in the last year or so. The cover itself seems to short internally and create a misfire/no-start condition. The past two times it has been cylinders 1 ...
December 20, 2007
1999 Chevrolet Astro 4.3L Hesitation, Stall, Misfire, MIL Lamp on VIN: 1GNDM19WOX
P0300: Multiple Cylinder Misfire Detected. see previous
December 21, 2007
2003 Ford Focus ZX3 2.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3FAFP31343
P0300: engine misfire. the car is missing at idle also when you acelerate it will miss some of the time. it seems to start missing when the rpm goes back down under a grand but it will not do this all of the time it also started a pending code p2195 which is the 02 sensor which is d...
December 23, 2007
1997 Pontiac Grand Am SE 3.1L Poor Idle Quality, Misfire, Poor Fuel Economy
P0300: Multiple Cylinder Misfire Detected. Hi everybody this is my personal car I was chasing this problem for a long time, there is no repair manual that I did not try or advice that I did not use. This car is in top shape as you can tell by compression readings. No leaks all vacuum lines etc are tigh...
December 25, 2007
1996 Chevrolet Astro 4.3L Misfire VIN: 1GNDM19W6T
P0300: Multiple Cylinder Misfire Detected. Hey guys i have a 96 chevy astro with 177402 miles on it and it appears to be in good condiction. the customer had a major tune up back in 8/8/07 by a shop that is now out of business and asked if i would look at it. the van now has an engine miss. I inspected...
December 26, 2007
2003 Chevrolet Silverado 1500 5.3L Misfire, MIL Lamp on VIN: 2GCEK19T83
P0300: Multiple Cylinder Misfire Detected. check for spark ok . check for external vaccum leaks, long fuel trim 50% bank one . 25% short fuel trim , ran pid data bank 2 within perimeters. have random misfire po300 perimeter count flags 1,3,5,7 .
December 28, 2007
1997 Chevrolet Cavalier LS 2.2L Misfire VIN: 1G1JF5242V
P0300: Multiple Engine Misfire Detected. ok guys this car runs really rough (like its just running on 2 cylinders) and misfires on every cylinder. I will not accerelate at all. It smells rich and acts like it flooding. It also will not start with the air cleaner off and it seems like all 2.2 I've wor...
December 29, 2007
2001 Chevrolet Express 3500 5.7L No Start, Hesitation, Cuts out, Misfire VIN: 1GBJG31R21
P0300: Multiple Cylinder Misfire Detected. hard time cold starting or at all, when running c/e light flashed in mid throttle snap test. try to figure why my high range power is cut out. slow consistant t/p is the only way to get themotor to rev.high and not missfire. no history codes and the light does...
December 29, 2007
1997 Chevrolet C1500 4.3L Misfire VIN: 1GCEC14W8W
P0300: Multiple Cylinder Misfire Detected. Only cylinder #1 is showing any misfires. we did a motorvac, no difference. Current ramp on #1 injector shows max amperage @1.03 amps. smooth wave form and a little flat spot 991us into the pattern. total duration 3.4ms and time at max amps abt 2.0ms. tried to...
December 31, 2007