Automotive Engine Sensor Troubleshooting

Throttle Position Sensor (TPS) – Function – Failure – Testing

09/03/2025

So, the throttle position sensors function (TPS), is to supply vital information to the vehicles engine control unit (ECU). And, this information is based on, the actual position of the engines throttle valve. So, your […]

(O2) Oxygen Sensor: Function – Failure Symptoms – With Testing

03/10/2025

The, (O2) Oxygen Sensor, measures the difference, between the amount of (O2) in the exhaust gas. And, the amount of (O2) in air. So, with that information and other sources, the (ECU) can decide, whether […]

Engine Coolant Temperature Sensor (ECT) Replacement

Engine Coolant Temperature Sensor: Step By Step Replacement

12/17/2024

The engine coolant temperature sensor, is one of the most important engine management sensors in your vehicle. So, a sensor that is shorted or reading out of range, can’t provide a reliable signal. Consequently, engine […]

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, […]

Engine Coolant Temperature (ECT) Sensor Location

Engine Coolant Temperature (ECT) Sensor: Failure Signs: Testing

09/23/2024

The engine coolant temperature (ECT) sensors function, is to monitor the temperature of the engine’s coolant. So, most engine coolant temperature (ECT) sensors operate, using electrical resistance to measure the temperature of the coolant. The […]

Oxygen Sensor (O2) Mounted on Exhaust Manifold

Oxygen Sensor (O2) – Rich Or Lean Engine Codes, What To Check

07/15/2024

Replacement of a good Oxygen Sensor, is a common mistake made by (DIY) mechanics all the time. So, before replacing any Oxygen Sensor, you must find the real problem first. First, the Oxygen Sensor is […]

(O2) Oxygen Sensors – Function, Failure Symptoms, And Testing

03/22/2024

EVERY VEHICLE BUILT SINCE THE EARLY 1980’s, HAS ONE OR MORE (O2) OXYGEN SENSORS INTEGRATED INTO THE EXHAUST SYSTEM. So, (O2) oxygen sensors, confirm, that the proper air/fuel ratio, is actually reaching the engine. Consequently, […]

Mass Air Flow Sensor (MAF) - Function - Common Failure Signs

Mass Air Flow Sensor (MAF): Measuring Volume, Density, Temperature

02/20/2024

So, almost all newer vehicles on the road today, use a mass air flow sensor. The mass air flow sensor, measures the volume and density, of the air entering the engine. In addition, it also […]

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