Rated 4.4 out of 5 stars.
This little guy is a total game-changer for anyone who loves tinkering with cars or does professional diagnostics.

The QDB-3A Ignition Coil Tester isn’t just about coils—it simulates all kinds of signals like rail pressure sensors, AC pressure sensors, and even drives step motors and PWM fans.

It’s got a built-in multimeter too, so you can check voltage and resistance on the fly.

The adjustable output goes from 1.25V to 14.5V with a max of 1.5A, and the PWM signal is fully customizable from 1 to 100kHz with duty cycle control.
It’s solid, compact, and works with 9-26V input.
Whether you're testing idle motors, ignition coils, or urea pumps, this tool handles it like a pro.

Perfect for DIYers or seasoned mechanics who want something portable and powerful.