The Power Probe IV is the next generation of Power Probe Circuit Testers. Now loaded with powerful multimeter functions, advanced diagnostic test modes, an easy to read color LCD display and a new rugged water and dust resistant housing. -------------------- El Power Probe IV es la próxima generación de probadores de circuitos Power Probe. Ahora cargado con potentes funciones de multímetro, modos de prueba de diagnóstico avanzados, una pantalla LCD a color fácil de leer y una nueva carcasa resis

Smarter Engine Ground Testing with the Power Probe MAESTRO & App When diagnosing engine electrical issues, testing the engine ground under load is critical—but doing it solo can be a challenge. That’s where the Power Probe MAESTRO and its companion app change the game. 📡 With the MAESTRO connected directly to the engine block, you can monitor engine ground voltage remotely while cranking the vehicle—all from inside the cabin using the app. In this real-world test, Danny Sehmi shows how a poor e

🔧 How to use the Power Probe 4 Fuel Injector Test Mode 🚗⚡ Did you know the Power Probe 4 includes a built-in Fuel Injector Test Mode? It’s the perfect solution for diagnosing injector issues with speed and accuracy—demonstrated here on a Fiat 500 petrol engine by our go-to tech by Danny Sehmi. 👨‍🔬 Once you’re in Fuel Injector Mode, the Power Probe 4 gets straight to work. You’ll instantly see four live data points: ✔️ A pulse confirmation via LED ✔️ Injector on-time to measure duration ✔️ In

When you are diagnosing circuits, the POWER PROBE 4 gives you the confidence to safely test circuits. We connected it to the driver output from the engine control unit. We saw there was good ground, however when using Driver Test Mode to reference the transistor in the circuit to ground. With 1 volt displayed we realize it’s a faulty Control Unit caused by a bad transistor. Once replaced, the display on the PP4 shows a green light and a 0.2 volt reading, showing a perfect tolerance. Using the Dr