Electrical & Sensors

Welcome to the Electrical & Sensors section. Modern engines rely on a complex “nervous system” of wires. A single failing sensor can cause a “no-start” nightmare. I help you demystify these electronic components. We translate confusing OBD-II fault codes into real repairs. Learn how to test O2 sensors, MAF sensors, and wiring harnesses. Stop guessing and stop overpaying for parts. Use these diagnostic guides to find the root cause of your “Check Engine” light.

Fuel Pump Relay – Function – Failure – Testing Procedures

06/09/2025

The fuel pump relay, is activated whenever the ignition is turned on. So, the primary function of the fuel pump relay, is to maintain a steady voltage supply to the fuel pump. Therefore, when switched […]

Ignition Coil: Function, Coil Types, Failure Symptoms, and Testing

02/14/2025

The function of the ignition coil, is to produce a high voltage, from a low voltage. Because, the high voltage from your ignition coil, is needed to ignite the fuel, and start the engine. So, […]

Starter Motor Going Bad: May Display A Few Warning Signs First

02/09/2025

The starter motor, is what gets your engine running, when you turn the ignition key or push the start button. So, a starter motor, gets a lot of wear during its life. As a result, […]

Spark Plug Health The Key to Optimal Engine Performance

Spark Plug Health Is Directly Linked, To Your Engines Performance

12/30/2024

Spark plug health, on today’s engines is very important, and if ignored, can cause serious problems. So, it stands to reason that, weak or bad spark plugs, are a big cause of concern. Spark plug health […]

Push Button Start Troubleshooting: Why Won’t the Engine Crank?

12/23/2024

Many newer vehicles have replaced, the traditional key-style ignition switch, with a push button start. As technology advances, our lives become more convenient, but are we also putting ourselves at risk? Will the push button […]

Comparing Spark Plug Color For A Quick Diagnosis

Spark Plug Color: Learn The Symptoms And Recommendations

11/23/2024

A visual inspection of the spark plug color will display symptoms, and conditions of what’s happening inside your engine. So, the experienced technician, can analyze the plugs, and track down the root cause of many […]

Coil On Plug Ignition System (COP) on Engine

Coil On Plug Ignition System: A Game Changer in Coil Technology

11/18/2024

The most sophisticated, of all ignition systems. The coil on plug ignition system (COP), places an ignition coil, directly on the top of each spark plug. As a result, (COP) ignition eliminates the need for […]

Alternator or Battery Failure: How to Diagnose and Save Money

10/30/2024

Having a alternator or battery failure is bad new, because they are both components of the charging system. That makes diagnosing a alternator or battery failure, a bit tricky. Because, the electrical power in your […]

Automotive Sensors: Monitoring Your Vehicle’s Vital Signs

10/27/2024

Before the use of computerized automotive sensors, fixing a car was way easier. In the old days, it was a lot different. For instance, either moving a distributor, or adjusting a screw on a carburetor, […]

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