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Crankshaft position sensor location?

Having a random misfire code from reader (P0300) I have already changed: spark plugs Spark plug wires camshaft position sensor in addition to all that tested coil pack, it passed. more info on the problem. I got a flashing Check engine light and a service tire monitor message. I have been deal with this problem for months, and have stumped 2 mechanic including the dealer (well more so ran out of money for them to dig more internally into the engine.

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  • 155 Answers

What car are you driving

Posted on Oct 24, 2012

  • Terrell Oct 25, 2012

    2006 Chevy Impala LT, it's misfires real rough durring idle, when I changed the plugs the one in the 1 cylinder look like it was rich because it was cover in fuel

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Posted on Jan 02, 2017

Molson02536
  • 3854 Answers

SOURCE: I have 03 chevy implala with 3.4. have check

What was the condition of the spark plug when replaced, was it indicating to a lean or a rich air fuel ratio. When is it misfiring?? during idle or while driving. The easy way to see if it's misfire during idle, disconnect the #2 wire from the plug and run the engine and see if there is any difference in the idle. If there is then the plug is firing and your getting the misfire during driving and that could be caused by a dirty fuel injector in cylinder #2 and may need it cleaned of replaced, but check the wire harness to the fuel injector it self be fore you go through all that. Good luck and keep me posted, be glad to help

Posted on Jun 15, 2009

  • 15 Answers

SOURCE: Hesitation and stumbling.

Before you do that, check which thermostat it has in it, if it has one that is letting it get too warm or not completely up to temp when the computer think it should be, it would cause this. My 2000 crown vic did the same thing and thats what it was.

Posted on Jul 20, 2009

  • 14036 Answers

SOURCE: Code P0300 misfired detected. I have cylinder 1

sound like bad ignition module.make sure where coil pack set in module contacts is clean and making good contact.also make sure plugs and wires is good.

Posted on Jan 09, 2010

  • 110 Answers

SOURCE: i have a 99 grand am SE 2.4 4 cylinder and my

A misfire doesn't always have to be ignition... it's just the most common cause. Faulty or plugged injector, low compression. You need to check fuel pressure and test the fuel injector flow. Then check compression. If you don't have tools for these tests, take it to someone who does. Testing is much cheaper than throwing parts at the problem.

Posted on Feb 25, 2010

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What is code p0300?


P0300 - Random, Multiple Cylinder Misfire Detected Fault Code Definition
  • Random, Multiple Misfire Detected
Symptoms
  • Check Engine Light flashing
  • Rough running, hesitation, and/or jerking when accelerating
  • In some cases, there may be performance problems, such as dying at stop signs or rough idling, hesitation, misfires or lack of power (especially during acceleration), and a decrease in fuel economy
Common Problems That Trigger theP0300
  • Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable)
  • Incorrect ignition timing
  • Vacuum leak(s)
  • Low or weak fuel pressure
  • Improperly functioning EGR system
  • Defective Mass Air Flow Sensor
  • Defective Crankshaft and/or Camshaft Sensor
  • Defective Throttle Position Sensor
  • Mechanical engine problems (i.e.-low compression, leaking head gasket(s), or valve problems

Jul 25, 2014 | 2000 Dodge Durango

1 Answer

Misfire po300


Error Code: P0300
Description:
Random/Multiple Cylinder(s) - Misfire Detected
Problem Area:
Air Intake System leaking.
Fuel Supply faulty.
Injector(s) faulty.
Ignition Cable(s) and/or Spark Plug(s) faulty.
Ignition coil(s).Exhaust Gas Recirculation (EGR) Valve stuck/open.
Camshaft Position Sensor faulty.
Low compression.
Wiring.

Solutions:
Check Misfire Recognition.
Check Air Intake System.
Check Fuel Supply.
Check Injector(s) and Injector Sealing.
Check Ignition Cable(s) and Spark Plug(s).
Check Ignition Coil(s).
Check Exhaust Gas Recirculation (EGR) Valve .
Check Camshaft Position Sensor.

Feb 25, 2014 | Chevrolet Cobalt Cars & Trucks

2 Answers

98 Pontiac GRAND am


The plugs and crank sensor could have done it, but the TPS and idle air control would have nothing to do with a random miss.
A more likely cause is the ignition module or a fuel problem. You may have to wait until the problem is bad enough to kill the engine or you have more codes to check out.

May 20, 2013 | Cars & Trucks

1 Answer

I get engne code p0300 what does that mean and what do i do already changed plugs and wires


check the coil, Normally when that code comes up its followed by more, as in P0301 02 03 , which would indicate which cylinder is being effected, P0300 Random/Multiple Cylinder Misfire Detected is what the code means and any of these could effect that code being thrown
  • 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

Jul 10, 2011 | 1999 Dodge Grand Caravan

2 Answers

My H3 keeps giving me a code for multiple cylinder misfire. What's up with this?


Check for some P0300 - Random/Multiple Cylinder Misfire Detected
Basically this means that the the car's computer has detected that not all of the engine's cylinders are firing properly.

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 may include:
the engine may be harder to start
the engine may stumble / stumble, and/or hesitate
other symptoms may also be present

Causes: 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

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.

Keep us updated.

Apr 24, 2011 | 2006 Hummer H3

2 Answers

Hi my 2006 cadillac cts has error codes po 300 303 305 343 347 368 392 and 496 can u tell me what they are or a website to find out thank u


P0300 is multiple engine misfire detected
P0303 is misfire in cylinder 3
P0305 is misfire in cylinder 5
P0343 is camshaft position sensor A (bank 1)
P0347 is camshaft position sensor A (bank 2)
P0368 is camshaft position sensor B (bank 1)
P0392 is camshaft position sensor B (bank2)
P0496 is EVAP Canister Purge System High Purge Flow

Jan 28, 2011 | 2006 Cadillac CTS

3 Answers

P0300 code reading on Chevy aveo. Engine light flashes and stays solid intermittently. While driving on the freeway, engine suddenly cut off. Tried to restart. Could hear the starter turning but engine...


Pull out your spark plugs. Change them if dirty. There might be a problem with the fuel trim, thats causing spark plug to foul up prematurely. A stucked open EGR valve can also cause a multiple mispfire code(P0300) but then it would be accompanied by an EGR code(P402) which means excessive flow detected. Anyways if was indeed a fouled up spark plug change them as well as the air filter.

Jun 30, 2009 | 2005 Chevrolet Aveo

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