John Huh

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.

More than 200 Porsches and a curated 10-car Turbo timeline will take over downtown Pleasanton for Porsches on Main 2026.

The real 2027 Nissan Z adds meaningful performance upgrades, but this unofficial Fairlady Z rendering delivers the retro design enthusiasts wanted.

Lotus will offer its Type 135 supercar with hybrid V6 and 1,000-PS V8 powertrains. The smaller engine could create the better driver’s car.

Honda says manual transmissions still belong in its enthusiast models. The Civic Type R and Integra Type S remain manual-only and unaffected.