Question about 2001 Chevrolet Cavalier

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My car is throwing me a P0300 code. i also got a foul very nasty smell comeing out the back. anyone help me?

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Random/multiple cylinder misfire.
that's what it means

Posted on Feb 09, 2010

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What is the course it the motor keeps throwing the plugs wet the u get a petrol smell and black smoke at the back


Sensor is fouled and not relaying to the ecm for adjustment.got any codes? Could be oxygen sensor.

Apr 18, 2017 | Toyota Cars & Trucks

1 Answer

What would cause a 2004 Ford Taurus to have codes p0300 and p0316?


The P0300 is a general misfire code, and can be a result of numerous things. Coils, wires, plugs, injectors, sensors, mechanical issues etc. Being that you are throwing a P0316 in conjunction with the P0300, I would think that they are related, but rather than throw money at the vehicle>, do a few things first.
Replace your plug wires, chances are they are at, or close to the end of their life,Check the connector going to the CPS for corrosion or a poor connection. Clear the codes and see if the P0300 and P0316 codes come back.In the event that the codes do come back, or just one of them, you can rule out the possibility of the plugs and wires and move on to more possibilities.If the scanner you are using has the ability to monitor misfires, this could be a helpful tool to identify which cylinder(s) the misfire(s) is/are isolated to.In the event the spark plug wires don't fix your issue, and it is isolated to a specific cylinder, or group of cylinders it could tell you where to look next.

Feb 28, 2015 | 2004 Ford Taurus

1 Answer

I have a 2005 chevy impala 3.4l v6. I am getting the code P0300 (multiple misfire).i recently changed the spark plugs/wires/coils and have checked all vacuum lines, but my car is still idling...


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 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 (more than likely your culprit)
  • 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.

May 26, 2011 | 2005 Chevrolet Impala

1 Answer

Have a 03 dodge durango and have erratic idle, have changed plugs and coils, the 3 plugs 4,6, and 8 are fouled abd checked for vacuum leak get a p0300 code abd the check light blinks. help!!!!!


Do the plugs smell sweet? Your have 3 plugs side by side on the passengers side of the motor missing. A sweet smell would point to a head gasket leak.

Jan 21, 2011 | 2003 Dodge Durango

1 Answer

My 2003 TrailBlazer has a foul smell from the air system. What could be causing this smell? It's a sour smell not a dead animal smell. Is there a cabin air filter? I've read several posts and some say...


you can buy a deoderiser that kills all known airborn nasties,you spray it into the air inlet of any aircon unit,the only smell that it will NOT get rid of is cigarette smoke.that sticks to the filter/condenser and all the vents...nasty.

Aug 25, 2010 | 2003 Chevrolet TrailBlazer

3 Answers

2001 GMC Jimmy Idling rough


HI
P0300 is multiple misfires.
P0171 is lean burn on left bank 1 means drivers side
02 sensor is faulty. Your vehicle is over fuelling that is why your are getting P0300 code and the rotten egg smell. Good idea is to replace both 02 sensors.

Apr 04, 2009 | 2001 GMC Jimmy

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