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MY 1998 PATHFINDER SERVICE ENGINE SOON FLASHES AND THEN STAYS ON I HAD IT SCANED IT READ CODE P0300 RANDOM MISS FIRE WHAT COULD BE THE CAUSE

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Change plugs,plug wires,and see if this does the trick remember to have code reset after repair.

Posted on Oct 02, 2009

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2005 Buick Las 4 door Code p0300


Not much.
Code 300 is for a random miss. The engine computer has detected more than one cylinder that is not producing power, but no one cylinder is constant.
Until you get a code like 301 or 303 its a guessing game. 301-306 would tell you which cylinder is being the problem.
The cause could be fuel or spark.

Aug 30, 2015 | Buick Cars & Trucks

2 Answers

Why the loss of power and po300 code?


HARD TO SAY WITH OUT BEING THERE BUT THIS MIGHT HELP .
Crankshaft sensor Was the trouble with my 99 Chevy truck after replacing many components like coil cap rotor wires and so on .
http://www.obd-codes.com/p0102 Code P0300 Causes and Fixes Code p0300 is a code that is generated when your engine has a misfire that is not related to only one cylinder. Sometimes this code will be set in addition to other codes such as p0301 which means that there is a misfire on cylinder 1 (cylinder 1 is the number one cylinder when looking at the firing order. It is generally the forward most cylinder on the engine.). If these engine codes are present as well the you should diagnose those first as they are probably causing code p0300.
This code will set your check engine light and needs to be fixed as soon as possible. If it is not then you will probably need to replace your catalytic converter as well as the problem that is causing your misfire.
There are many causes for this obd code. Since it is a "random misfire" or "multiple misfire" this means that the misfire is on different cylinders and not just one all the time.
Common Causes
  • Low Fuel Pressure
  • Vacuum Leak
  • EGR system malfunction
  • Internal Engine Problems (such as low compression)
Less Common Causes
  • Faulty Coil
  • Faulty Spark Plugs and/or Wires
  • Camshaft or Crankshaft sensors
  • Ignition module
  • Computer

Jun 12, 2014 | 1998 Chevrolet Tahoe

1 Answer

1998 nissan pathfinder p0300 code loss of power at take off replaced wire plugs cap and rotor also tps and mass sensor and valve cover gaskets leaking and replaced all vacuum lines on vehicle what is...


DTC P0300 indicates random multiple misfires were detected. You have replaced a lot of parts but probable causes include:
1. Fuel contamination (not mentioned above)
2. Ignition module (included above?)
3. Fuel system

May 07, 2014 | 1998 Nissan Pathfinder

1 Answer

CODES P0300, P1128


po300 is random miss fire doubtful two O2 sensors bad at one time most likely coolant temp sensor is bad causing engine to run rich this will cause O2 sensors to throw a code(thats what they are there for..exhaust gas temp. and raw fuel) running rich will also fowl spark plugs(=miss fire) P1128 ??

Mar 20, 2013 | 2006 Jeep Liberty

1 Answer

2006 Pontiac G6 shifting hard, engine very sluggish and mpg under 15.


You have a random engine misfire. P0300. That is the root cause. Basically this P0300 code means that the car's computer has detected that not all of the engine's cylinders are firing properly. This would also cause hard shifts due to low engine power.
Read on please.




A P0300 diagnostic code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.
Symptoms:
•the engine may be harder to start
•the engine may stumble / stumble, and/or hesitate
•other symptoms may also be present
Causes:
•Faulty spark plugs or wires
•Faulty coil (pack)
•Faulty oxygen sensor(s)
•Faulty fuel injector(s)
•Burned exhaust valve
•Faulty catalytic converter(s)
•Stuck/blocked/leaking EGR valve / passages
•Faulty camshaft position sensor
•Defective computer

Apr 24, 2017 | Cars & Trucks

1 Answer

Code0171 system too lean on 2004 chevy avalanche


P0300 Means randome miss fires detected; Cause is you may need a tune up.Or you just drove over one very bumppy surface. P0171 is caused by the unburnt fuel from the misfire.

Jan 18, 2012 | Chevrolet Avalanche Cars & Trucks

2 Answers

1996 corvette didn't pass emissions codes po117 and po300 i just put new engine n tune up what could be wrong now


p0300 is usually a random cylinder miss-fire code, and i think that p0117 is coolant temperature sensor? Try replacing the sensor, could also be the reason for the other code, as a malfunctioning coolant temp sensor will affect engine timing.

Dec 14, 2010 | Chevrolet Corvette Cars & Trucks

2 Answers

P0300 engine code


Random cylinder misfire, you will need an OBDII Scanner with MODE 6 to see what the miss count is to help find the offending cylinder.

You may get lucky and get a P0301 though P0304 code to tell you which cyling but then you may not...

Then after you find the offending cylinder you will have to figure out why its running bad... Plug, coil, injector, compression or vavle problem.

May 15, 2010 | 1998 Toyota Corolla

1 Answer

1998 chevrolet k1500 4wd. 5.0 liter.truck runs fine untill putting load on it.Pulling trailer uphill on long grade it starts to shake and miss.If you stay in throttle long enough service engine soon light...


Your ignitoin module may not be able to handle the work load anymore. If it gets hot, it will miss. You'll need to replace it. If you do a lot of towing, I suggest a performance unit from ACCEL or MSD

Mar 06, 2010 | 1998 Chevrolet K1500

1 Answer

Engine Random Misfire code PO-300


P0300 is for random miss-fire, loose or defective gas-cap, water in the fuel, damaged vacuum line, clogged fuel and/or air filter, faulty plugs and/or wires, fuel injectors. These are more common reasons, there are others but this a good start.

May 15, 2009 | 2001 Mitsubishi Diamante

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