Single or unique-misfires occur on an identifiable cylinder.  The power control module marks these with a suffix to the P0300 code.  P0307 or P0302 suggests misfires on cylinders seven and two respectively.  With such a symptom, the cause is unique to the cylinder named.

P0300 series codes indicate an engine misfire.  They can be very mysterious, and expensive if not addressed logically.  With a few simple tools, a little thought, and these tips, most enthusiasts can cure the engine misfires.

The truck cranks over but will not start.  On General Motors vehicles a bad fuel pump is common and often the first guess.  Sometime it is the cause, other times not.  It’s an expensive mistake to guess wrong.  These tips will greatly increase the odds of being right.

Windshield wipers get very little thought, until it rains. Lack of operation, poor wiping or wont stop working, are all problems that sometimes occur. If they do, this article can help you to understand why.

It would be great if car makers could install a system that would warn the driver of a problem, before it turned into a major repair. A light could come on to advise folks that things were about to go wrong.

When the battery and cables are good and a vehicle will not crank, a few simple procedures can often help isolate the problem.

Often, solving automobile problems means diagnosing the electrical system, as circuits have become a much larger portion of modern vehicles. Knowing how to check basic components can make a repair easier.

Brake lights seem extremely simple. Press the brake pedal and they come on, release, and they go off. Many things can and do go wrong. When they do, this guide can help find the problem.

When we release the accelerator, the engine’s speed slows. At a preset speed the engine idle circuit takes over and the engine runs at the lowest speed possible without stalling. Watching the tachometer shows an idle speed around 500 to 900 RPM. The engine’s idle speed also changes, based on outside conditions. A computer is adjusting the idle speed, based on complex calculations.

In the hot climate of the Southern United States, average battery life is 37 months. When a battery lasts considerably less time, a problem is indicated. Diagnosing repeat battery failure is easier with an understanding of how they operate.

As the temperature of the combustion chamber approaches 2500 degrees Fahrenheit, nitrous oxide emissions increase. The fuel air mixture can also spontaneously combust, causing valve clatter and damaging the engine. Allowing a small amount of exhaust gas back into the intake reduces combustion chamber temperature. Regulating the flow of exhaust gas is the job of the EGR system.

Many folks have experienced the aggravation of a dead battery. Cheap batteries, that leak, may also cause other far more expensive problems.

After a few years, modern GM V8 engines are very prone to a rough idle and misfire when cold. The check engine light may also come on, with codes P0300, P0171 and PO174. Strangely, as the engine warms up, the roughness tends to go away, which seems confusing.