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2000 chevy blazer generic random misfire code p0300

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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fastboyz
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SOURCE: put a checker on it and got a p03000 random multiple cyl misfire

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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SOURCE: Random engine misfiring- fault code P0300- 1999 cutlass

Could be coil pack(s), fuel injectors, etc. Rather than retype it, just check out this great article on P0300 random misfire - http://www.obd-codes.com/p0300

Posted on Dec 15, 2008

davesmith_37
  • 94 Answers

SOURCE: cylinder 2 misfire on a 1998 chevy blazer

check your plug wires for tears and dont overlap them

Posted on Feb 27, 2009

emissionwiz
  • 76132 Answers

SOURCE: 2004 CHEVY AVEO THROWING CODES P0700 TRANSMISSION CONTROL SYSTEM,P0300 RANDOM MISFIRE DETECTED, P1781 ENGINE TORQUE SIGNAL CIRCUIT. CAR RANDOMLY DIES DRIVING ON THE HIWAY, PULL OVER,STOP RESTART CAR G

there is a Technical service bulletin for this problem, the number of the TSB is 01575, TSB Date:January 1, 2004
It has to do with engine valve seating problems.

Posted on Jun 03, 2009

  • 2841 Answers

SOURCE: What is code P0300 on a 2000 Chevy Malibu?

Basically this means that the the car's computer has detected that not all of the engine's cylinders are firing properly.
A P0300 OBD DTC 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. 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. 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.


Posted on Aug 31, 2009

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


How To Fix P0300 random misfire codes in your car ...

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P0300 - OBD-II Trouble Code - RepairPal

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OBD II Fault Code. OBD II P0300. Fault Code Definition. Random, Multiple MisfireDetected. Symptoms. Check Engine Light flashing; Rough running, hesitation ...

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Jan 24, 2016 | Cars & Trucks

1 Answer

How do i fix my Mercury Villager 2002 with random misfire?


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Oct 15, 2010 - How to Fix error code P0300 for random misfires on your car ... amisfire (code P0304) on a 1999 Mercury Villager 3.3L ยท How to Fix error code P0500 ... I reset my codes and it ran fine for a couple of days, then I started getting ...

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Repair the code issue, because your Villager has OBD-II which is a very helpful Diagnostic system. Upvote (4) ... My 1999 Villager was running poorly; rough idle, lack of power at highway speeds and the engine problem light indicated random miss-fire, etc. I had new spark ... Have code po306 cylinder 6 misfire detected.

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Dec 17, 2015 | 2002 Mercury Villager

2 Answers

Has p0300 code misfire cyl 2 and 3


If it was just cylinder 2 or 3, the code would be 0302 or 0303. Instead, you have random misfires (probably) such that you should be checking things that affect the whole engine. Vacuum leaks, bad plug wires, bad coil(s) or ignition module are most likely, but even clogged exhaust, O2 sensors and bad battery can cause these problems. Yes, a battery can be good enough to start your car but still be bad enough to affect performance. If I had to guess, I would start by testing the ignition module. Most parts stores can test this if you remove it and carry it to them.

May 04, 2015 | 1998 Chevrolet Blazer

1 Answer

How to fix


all the above are good things to check. but in a lot of case these random misfire is do to blown head gaskets or intake gasket so before you go buy any parts check for water in cylinders goodluck

Nov 08, 2013 | 2000 Chevrolet Blazer

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

Ramdom misfire p0300


Please go to this link for diagnosis and repair of random misfire codes (P0300)

Sep 04, 2012 | 2000 Dodge Ram 1500 Truck

1 Answer

Replaced:plugs,wiresdistributor,fuel pump.truck wouldn't start before but now it starts but i am getting po135,po141,po147.po300 codes


P0135 means 0xygen heater circuit malfunction, P0141 mean 02 heater circuit bank1 sensor 2 (this is catalytic monitor) P0147 means 02 heater sensor circuit bank 1 sensor 3, P0300 is random misfire. You will get all the 02 code because of the misfire correct the misfire and the 02 should correct.We will start with the plug wire and make sure the firing order is correct 1996 chevy blazer that will make it a 4.3 engine size check the firing order firing order is 165432 also check the coil (it has a tendency to short you will know if it is) cansmo_181.gifcansmo_182.gifmake sure the distributor rotation is check

Sep 09, 2011 | 1996 Chevrolet Blazer

2 Answers

Egr valve for 1997 cheve Blazer code is 0300 misfireing what could be the trouble


usually this code is followed by another number 1-4 or 1-6 or 1-8 depending on how many cylinders your vehicle has ,, what the code you got is a basic P0300 Random/Multiple Cylinder Misfire Detected A code P0300 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
  • 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 ope

Jun 23, 2011 | 1997 Chevrolet Blazer

2 Answers

We put a tester on my 1999 blazer and it came up 1 code P0300???? gettin a seconed opion


p0300 is a random misfire, which usually indicates almost anything-generally a good tune up will fix it, like new wires, plugs, clean the throttle body, dist cap/rotor, check charging system, check fuel pressure, replace fuel filter...it is random (usually fuel) but a good going-over by a decent and honest mechanic will fix it.

Apr 21, 2011 | Chevrolet Blazer Cars & Trucks

2 Answers

My 01 chevy blazer will idle rough. it gives me error codes, p0300 and p0135 and p0141. where do i find these problems


Hello your po135 is o2 sensor bank 1 your po141 is O2 sensor bank 1 sensor 2 and your pO300 is random multiple cylinder misfire these problems are your oxygen sensors and engine misfire pO300 is you engine missing o2 sensors are switches in the exhaust system the engine misfires are the engines cylinders missing.

Jan 05, 2011 | 2001 Chevrolet Blazer

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