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Posted on Feb 19, 2011
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Service light came on and the code is po300 what can it be and what can we do

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Arnie Burke

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  • Mitsubishi Master 7,339 Answers
  • Posted on Feb 19, 2011
Arnie Burke
Mitsubishi Master
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Multicylinder misfire--get it on a tech II scanner and have a data stream read to pinpoint--look under hood for any flaws-think tuneup

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0helpful
1answer

2004 Dodge ram 3.7 , code PO300 , engine light on, misfires worst over 45 mph.

Clean MAF and Throttle Body first. Then start looking at electrics. Ideally, you need a high end scan tool to look at the raw data and freeze frame.
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Code po300

po300=multiple cylinder misfire,,is that the only on code,
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Check engine light

Thermostat failure, random misfires detected, idle control errors. Severe vehicle overheat condition could set po300 and po506. Recommend replace tstat and seal , clear codes and recheck.
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Po300 code

If the problem isn't fixed the error code will keep returning. You'll need to get the ignition system checked from the spark plugs back over, (plug leads, ignition coil, etc). The injectors might need checking as well.
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I have a 99 malibu with a 3.1L engine. my check engine light came on and then started to blink, after scanning the car with a code reader it showed a PO300, PO113, and P1404. after reseaching the...

the flashing light is telling you the engine is miss firing, not that there is fuel in the exhust a miss fire is the only thing that will cause the light o flash the P0300 is a random misfire so i cant tell you witch cylinder but replace the coils that should take care of it....good luck
1helpful
1answer

Runs fine going uphill but starts misfireing going

po300 random misfire it needs a tune up..plugs and wires, air and fuel filter........po452 fuel pressure sensor or the fuel level sensor..The fuel pressure sensor is located on top of the fuel pump module.Hope this help...pls rate
2helpful
1answer

Code po300 check engine light

The Po300 is a random misfire code where the PCM is picking up the misfires. The other two codes are lean mixture codes. More than likely these are due to bad intake manifold gaskets allowing unmetered air to enter the engine causing the engine to lean out and possibly run a little rough when cold
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1answer

Service engine light blinks,code read out of po300

Code p0300 is the code for "random missfire detected". The "check engine" light is flashing to warn you that severe damage is being done to the catalytic converter.(very expensive)..
3helpful
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1996 monte carlo fault codes po300, 441, 705,

THESE ARE FROM THE GM CODE DIFINITION MANUAL, U NEED TO TAKE THIS TO THE DELAER, U HAVE SOME SERIOUS PROBLEMS TO GIVE THIS MANY CODES.

P0300 - Engine Random Misfire Detected
P0441 - Evaporative Emission Control System Incorrect Purge Flow
P0705 - Trans Range Switch Circuit
P1106 - Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage
P1133 - Heated Oxygen Sensor (HO2S) Insufficient Switching Bank 1 Sensor 1
P1441 - Evaporative Emission (EVAP) System Flow During Non-Purge
P1662 - Cruise Lamp Control Circuit
P1672 - Low Engine Oil Level Lamp Control Circuit
P1870 - Transmission Component Slipping
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