Question about BMW 02 03 04 05 06 3 Series E46 325i 330i M3 Radio Mp3 Cd Mode 65126919072
Misfire and the lack of power when accelerating.
P0300 75 Random/Multiple Cylinder Misfire Detected
What does that mean?
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 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
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
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.
Creator C110 Code Reader V4 4 for BMW From 2000 to 2013 Year
Posted on Feb 14, 2017
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Feb 23, 2017 | Pontiac Cars & Trucks
Jan 24, 2016 | Cars & Trucks
Dec 17, 2015 | 2002 Mercury Villager
Dec 08, 2015 | BMW 2013 X5 xDrive35i
Jul 09, 2015 | Dodge Cars & Trucks
Jun 12, 2015 | Cars & Trucks
Apr 07, 2015 | Cars & Trucks
Oct 16, 2012 | 1998 Nissan Maxima
May 03, 2010 | 2002 Buick LeSabre
Jul 23, 2008 | 2002 Daewoo Lanos
190 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: