Random misfires in a 2001 Bravada can be caused by several factors, including faulty spark plugs or ignition coils, which can disrupt the engine's firing sequence. Additionally, issues with the fuel system, such as clogged fuel injectors or a failing fuel pump, can lead to inconsistent fuel delivery. Vacuum leaks or problems with the engine's sensors, like the mass airflow sensor or oxygen sensors, may also contribute to misfires. Regular maintenance and diagnostic checks can help identify and address these issues.
Tune up
po300-Random/multiple cylinder misfire detected. po303-Cylinder no. 3 misfire detected. po306-cylinder no. 6 misfire detected po300-Random/multiple cylinder misfire detected. po303-Cylinder no. 3 misfire detected. po306-cylinder no. 6 misfire detected
P0300 means random misfire detected which probably has to do with the spark plugs or the plug wires
Trouble code P0300 means: Random/multiple cylinder misfire detected
If check engine light is on, have a parts store read the code. It will tell you there is a random misfire and usually what cylinder is misfiring. Replace the coil pack for that cylinder and all will be well.
Bad plugs, wire , coil packs if it has them.
There are none
Ignition module.
There are a number of reasons why a 2001 Toyota Corolla 1.4 GS engine would misfire. Coils are one common cause. Another common cause is the fuel delivery system.
The fuel pressure regulator is on a 2001 Bravada is located in the rear on the gas tank. It is in the fuel line between the fuel pump and the gas tank.
Faulty: spark plug, spark plug wire, ignition coil, ignition module, fuel injector are the most common. Coolant leaking into a cylinder is another. Internal engine problems such as burnt valve, broken valve spring, bent push rod, worn rings.Also check gaskets (intake) for vacuum leaks.This also may cause a random misfire to read.
In the distributor .