Question about 2000 Chevrolet Blazer
Posted by Anonymous on
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Posted on Jan 02, 2017
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
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
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
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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