John Huh

Seeing 12 volts at a connector doesn't prove the circuit is healthy. Learn how automotive wiring load tests expose corrosion, weak terminals, damaged wires and other hidden resistance.

A manual Acura RSX that has electrical power but won't crank may have a clutch interlock problem. Learn how the switch works and what to test next.

Installing a ZF 8HP involves much more than bolting a transmission behind an engine. Here's what to know about fitment, driveshafts, cooling, electronics, CAN communication, gearing and chassis integration before buying parts.

The San Francisco Chinatown Car Show returns September 6 with classic and exotic cars, live cultural performances and a Grant Avenue parade.

The RSX oil pressure switch has a well-earned reputation for crying wolf. It fails, the light comes on, and the internet tells you to replace the switch and move on. That advice is correct roughly half the time — and engine-destroying the other half. Before ordering parts, spend twenty minutes confirming whether the K20 is lying to you or asking for help. The test is straightforward. The cost of skipping it is not.

A warm Acura RSX should not remain at 1,500 or 2,000 RPM. Diagnose vacuum leaks, throttle operation, IACV control and PCM sensor data before adjusting anything.

A flashing green key light means your Acura RSX immobilizer cannot validate the ignition key. Learn how to test the key, fuses, receiver, relay and PCM communication.

If your Acura RSX starts and then immediately stalls, check the immobilizer, fuel pressure, throttle body, vacuum system, sensor data and idle learning before replacing parts.

If your Acura RSX cranks but won’t start, the engine is usually missing fuel pressure, spark, injector pulse, compression or immobilizer authorization. Here’s how to test the real cause before replacing perfectly good parts.

The K20A2 and K20A3 share the same 2.0-liter K-series architecture, but their compression, VTEC hardware, output and performance potential are substantially different.