Question about 2001 Chevrolet Blazer

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Put a checker on it and got a p03000 random multiple cyl misfire

Put a code reader on and it shows P0300 code witch is randon multiple cylider misfire what is that.and can I fix it without high priced mechanics, their was a time when I could fix any of them.

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  • Anonymous Jan 06, 2009

    I've been having random multiple misfires for the past year or so...i've replaced plugs, wires, o2 sensors, temp sender, thermostat, and ignition coil and the problem still exists...ive got 205,000 miles on it and i cant even remember the check engine light wasnt on...

  • Anonymous Mar 23, 2014

    randon misfires, bank1 o2 high, long term fuel trim -30, cataletic converter egg smell

  • Anonymous Mar 28, 2014

    P03000

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You are getting a misfire and 99% of the time you need a tune up
plugs and wires and clean your throttlebody

Posted on Oct 27, 2008

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Starts up but runs rough, exhaust smells, and when you give it gas it wants to shut off.


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www.random-misfire.com/

Jan 24, 2016 | Cars & Trucks

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I have 01 trooper replaced gas cap now check engine light off, but I have a p0300 code will it pass smog.?.


Many states will not pass a vehicle with a check engine light.

The P03000 code you have has little to do with the gas cap, rather it is a random misfire code. read more about this code and possible fixes in the link below. Good luck!

http://www.obd-codes.com/p0300

Jul 24, 2015 | 2001 Isuzu Trooper

2 Answers

What does code P0300 mean for a 2000 volvo engine


P0300 random misfire P0302 misfire cyl 2 P0304 misfire cyl 4.
Check spark plug and wires and coils

Feb 03, 2013 | 2000 Volvo S40

1 Answer

2002 elantra cyl 2 random misfire


Hi there: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.

For example, a P0302 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #2; same condition in P0301 - cyl #1, P0303 - cyl #3 and P0304 - cyl #4.

A code P0300 (or 301, 302, 303 or 304) may mean that one or more of the following has happened:
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 EGR valve / passages
Faulty camshaft position sensor
Defective computer

About your possible solutions, if there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.


Hope this helps.

Mar 09, 2012 | Hyundai Motor 2002 Elantra

1 Answer

I have an 2005 ford f250 with the 5.4L. and its showing codes po174, po300, po305, po307 and i alreadt put a new maf in. what should it look at next?


Did you resolve the other codes? p0300 random multiple misfire, p0305 misfire cyl #5, p0307 misfire cyl #7? You could have bad ignition coils or a vacuum leak. Check your coils and check for vacuum leaks at the intake manifold check vacuum hoses. Hope this helps!

May 22, 2011 | 2005 Ford F 250 Super Duty

1 Answer

Engine is chocking by aplying on gas, did plug code reader the code is P0300 01/09 pls help


p0300--random/ multiple cylinder misfire detected. could be plug wires plugs coils etc.

Oct 31, 2010 | 1996 Dodge Ram 1500 Club Cab

1 Answer

Code reader showes random misfire on cyl 1,3,5, have already changed the plugs


if the wrong spark plugs were used it could create a p0300 code. these cars call for ngk or nippon denso plugs. if i understand what you are telling me you have 4 related codes p0300(random missfire)p0301(cyl 1)p0303, and p0305. if this is the case then check your plugs again. if someone put in autolites to save money, throw them in the trash. they have a place, this is just not it. make sure your maintenance is up to date and the timing belt has been changed. it is recomended by hyundai at 60,000 miles.

Nov 03, 2009 | 2001 Hyundai XG300

1 Answer

Engine light comes on - Code shows P0300 and then


OBD II 300 Random/Multiple Cylinder Misfire Detected

When the misfire monitor detects a misfire, it will trigger the check engine light with the specific cylinder number as the last digit in the P030X code. For instance cylinder 1 misfire is P0301, cylinder 2 is P0302 etc. In this case we have either multiple cylinders misfiring, or the computer simply can't determine the specific cylinder, and as such we are left with the P0300 in computer memory.

Possible Causes:

Fuel injectors, related wiring, sensors and computer issues
Running out of gas, or poor fuel quality
Evaporative emissions system (EVAP) concerns: fuel vapors leaking into engine
Incorrect Fuel Pressure
EGR system concerns: leaking EGR valve or restricted ports
Base engine concerns: low compression, valve train problems and timing issues
Ignition system concerns including, but not limited to:
Faulty spark plugs
Faulty coil or related wiring
Ignition module or related wiring issues
Ignition related sensor faults or wiring issues

Apr 04, 2009 | 1996 Dodge Ram 1500 Club Cab

1 Answer

Put a checker on it and got a p03000 random multiple cyl misfire


Whens the last time you gave it a tune up???Check the distributor.It may have water or moisture in it or the rotor may have a hole burn't in it..Check all wires..If all that stuff is good look around for a vacuum leak.Maybe a hose came of the air cleaner or one off the duck work going to the intake..If that stuff is good then try giving it a fuel pressure test.That should help you with the problem..Have a great night..

Apr 03, 2009 | 1998 Chevrolet S-10 Pickup

1 Answer

Fault code I believe is p0300


P0300 is a misfire that the engine computer hasn't or can't pinpoint to a specific cylinder yet

Oct 15, 2008 | 2006 Dodge Magnum

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